{
  "name": "ConvertBite unit conversion factors",
  "description": "Conversion factors and formulas between common units, each with the standard it comes from.",
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "citation": "ConvertBite (EasyByte Hub S. Coop. Mad.). Unit conversion factors, with sources. https://convertbite.com/data/",
  "publisher": "EasyByte Hub S. Coop. Mad.",
  "url": "https://convertbite.com/data/",
  "records": [
    {
      "id": "mm-inches",
      "family": "length",
      "from": {
        "name": "millimeters",
        "symbol": "mm"
      },
      "to": {
        "name": "inches",
        "symbol": "in"
      },
      "type": "factor",
      "formula": "in = mm × 0.0393700787",
      "exact": true,
      "source": {
        "organization": "NIST (National Institute of Standards and Technology, USA)",
        "title": "NIST Guide to the SI, Appendix B: Conversion Factors",
        "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors"
      },
      "source_note": "The inch is exactly 25.4 mm under the 1959 international yard and pound agreement — not a rounded figure.",
      "note": "In inches, fractions carry as much weight as whole numbers — 1/2, 3/8 and 1/4 are among the most looked-up sizes.",
      "page": "https://convertbite.com/mm-to-inches/",
      "factor": 0.0393700787401575
    },
    {
      "id": "celsius-fahrenheit",
      "family": "temperature",
      "from": {
        "name": "Celsius",
        "symbol": "°C"
      },
      "to": {
        "name": "Fahrenheit",
        "symbol": "°F"
      },
      "type": "linear",
      "formula": "°F = °C × 1.8 + 32",
      "exact": true,
      "source": {
        "organization": "BIPM (Bureau International des Poids et Mesures)",
        "title": "The International System of Units (SI Brochure)",
        "url": "https://www.bipm.org/en/publications/si-brochure"
      },
      "source_note": "The relation between the scales is exact; the kelvin and the degree Celsius are defined by the SI.",
      "note": "37 °C is normal body temperature and 38 °C is a fever. Ovens usually sit between 160 °C and 200 °C.",
      "page": "https://convertbite.com/celsius-to-fahrenheit/",
      "slope": 1.8,
      "offset": 32
    },
    {
      "id": "knots-mph",
      "family": "speed",
      "from": {
        "name": "knots",
        "symbol": "kn"
      },
      "to": {
        "name": "miles per hour",
        "symbol": "mph"
      },
      "type": "factor",
      "formula": "mph = kn × 1.150779448",
      "exact": true,
      "source": {
        "organization": "NIST (National Institute of Standards and Technology, USA)",
        "title": "NIST Guide to the SI, Appendix B: Conversion Factors",
        "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors"
      },
      "source_note": "A knot is one nautical mile — exactly 1,852 m — per hour.",
      "note": "A knot is one nautical mile per hour, and a nautical mile is exactly 1,852 m — that is where the 1.15078 comes from.",
      "page": "https://convertbite.com/knots-to-mph/",
      "factor": 1.150779448
    },
    {
      "id": "bar-psi",
      "family": "pressure",
      "from": {
        "name": "bar",
        "symbol": "bar"
      },
      "to": {
        "name": "psi",
        "symbol": "psi"
      },
      "type": "factor",
      "formula": "psi = bar × 14.503773773",
      "exact": false,
      "source": {
        "organization": "NIST (National Institute of Standards and Technology, USA)",
        "title": "NIST Guide to the SI, Appendix B: Conversion Factors",
        "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors"
      },
      "source_note": "A bar is exactly 100,000 Pa; psi derives from the pound-force and the inch.",
      "note": "Car tyres usually run at 2 to 2.5 bar, which is 29.01 to 36.26 psi.",
      "page": "https://convertbite.com/bar-to-psi/",
      "factor": 14.503773773
    },
    {
      "id": "watts-btu",
      "family": "power",
      "from": {
        "name": "watts",
        "symbol": "W"
      },
      "to": {
        "name": "BTU per hour",
        "symbol": "BTU/h"
      },
      "type": "factor",
      "formula": "BTU/h = W × 3.412141633",
      "exact": false,
      "source": {
        "organization": "NIST (National Institute of Standards and Technology, USA)",
        "title": "NIST Guide to the SI, Appendix B: Conversion Factors",
        "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors"
      },
      "source_note": "The BTU has several definitions; this page uses the International Table BTU (BTU IT) as listed in NIST SP 811, which is the one used to rate heating and air conditioning, not the thermochemical BTU.",
      "note": "BTU here means BTU per hour, which is how air conditioning power is rated. A plain BTU is energy, not power.",
      "page": "https://convertbite.com/watts-to-btu/",
      "factor": 3.412141633
    },
    {
      "id": "mb-gb",
      "family": "data",
      "from": {
        "name": "megabytes",
        "symbol": "MB"
      },
      "to": {
        "name": "gigabytes",
        "symbol": "GB"
      },
      "type": "factor",
      "formula": "GB = MB × 0.0009765625",
      "exact": false,
      "source": {
        "organization": "NIST",
        "title": "Prefixes for binary multiples",
        "url": "https://physics.nist.gov/cuu/Units/binary.html"
      },
      "source_note": "NIST defines the binary prefixes — kibi, mebi, gibi — precisely to settle this ambiguity.",
      "note": null,
      "page": "https://convertbite.com/mb-to-gb/",
      "factor": 0.0009765625
    },
    {
      "id": "kb-mb",
      "family": "data",
      "from": {
        "name": "kilobytes",
        "symbol": "KB"
      },
      "to": {
        "name": "megabytes",
        "symbol": "MB"
      },
      "type": "factor",
      "formula": "MB = KB × 0.0009765625",
      "exact": false,
      "source": {
        "organization": "NIST",
        "title": "Prefixes for binary multiples",
        "url": "https://physics.nist.gov/cuu/Units/binary.html"
      },
      "source_note": "Likewise: NIST defines kibibyte and mebibyte to keep 1024 apart from 1000.",
      "note": null,
      "page": "https://convertbite.com/kb-to-mb/",
      "factor": 0.0009765625
    },
    {
      "id": "watts-amps",
      "family": "power",
      "from": {
        "name": "watts",
        "symbol": "W"
      },
      "to": {
        "name": "amps",
        "symbol": "A"
      },
      "type": "two_inputs",
      "formula": "A = W ÷ V",
      "exact": true,
      "source": {
        "organization": "BIPM (Bureau International des Poids et Mesures)",
        "title": "The International System of Units (SI Brochure)",
        "url": "https://www.bipm.org/en/publications/si-brochure"
      },
      "source_note": "P = V·I is how the SI defines the watt, not an approximation.",
      "note": "Watts and amps are not the same quantity: without the voltage there is no conversion. Any page giving you a single number is assuming one.",
      "page": "https://convertbite.com/watts-to-amps/",
      "depends_on": {
        "name": "volts",
        "unit": "V",
        "default": 120
      },
      "options": [
        {
          "value": 120
        },
        {
          "value": 230
        },
        {
          "value": 240
        },
        {
          "value": 12
        },
        {
          "value": 24
        }
      ]
    },
    {
      "id": "shoe-uk-us",
      "family": "clothing",
      "from": {
        "name": "UK shoe sizes",
        "symbol": "UK"
      },
      "to": {
        "name": "US shoe sizes",
        "symbol": "US"
      },
      "type": "table",
      "formula": null,
      "exact": null,
      "source": null,
      "source_note": "There is no international standard for shoe sizes: every maker adjusts its own last.",
      "note": "There is no single formula. Men's US sizes are UK + 1 and women's are UK + 2, which is why the chart shows both.",
      "page": "https://convertbite.com/uk-shoe-size-to-us-shoe-size/",
      "table": {
        "columns": [
          "UK",
          "US men",
          "US women"
        ],
        "rows": [
          [
            3,
            4,
            5
          ],
          [
            3.5,
            4.5,
            5.5
          ],
          [
            4,
            5,
            6
          ],
          [
            4.5,
            5.5,
            6.5
          ],
          [
            5,
            6,
            7
          ],
          [
            5.5,
            6.5,
            7.5
          ],
          [
            6,
            7,
            8
          ],
          [
            6.5,
            7.5,
            8.5
          ],
          [
            7,
            8,
            9
          ],
          [
            7.5,
            8.5,
            9.5
          ],
          [
            8,
            9,
            10
          ],
          [
            8.5,
            9.5,
            10.5
          ],
          [
            9,
            10,
            11
          ],
          [
            9.5,
            10.5,
            11.5
          ],
          [
            10,
            11,
            12
          ],
          [
            10.5,
            11.5,
            12.5
          ],
          [
            11,
            12,
            13
          ],
          [
            11.5,
            12.5,
            13.5
          ],
          [
            12,
            13,
            14
          ],
          [
            13,
            14,
            15
          ]
        ]
      }
    },
    {
      "id": "cm-inches",
      "family": "length",
      "from": {
        "name": "centimeters",
        "symbol": "cm"
      },
      "to": {
        "name": "inches",
        "symbol": "in"
      },
      "type": "factor",
      "formula": "in = cm × 0.3937007874",
      "exact": true,
      "source": {
        "organization": "NIST (National Institute of Standards and Technology, USA)",
        "title": "NIST Guide to the SI, Appendix B: Conversion Factors",
        "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors"
      },
      "source_note": "Derived from the inch of exactly 25.4 mm (1959 agreement).",
      "note": "Screen sizes are measured diagonally, so a 40 cm screen is not 40 cm wide.",
      "page": "https://convertbite.com/cm-to-inches/",
      "factor": 0.393700787401575
    },
    {
      "id": "miles-km",
      "family": "length",
      "from": {
        "name": "miles",
        "symbol": "mi"
      },
      "to": {
        "name": "kilometers",
        "symbol": "km"
      },
      "type": "factor",
      "formula": "km = mi × 1.609344",
      "exact": true,
      "source": {
        "organization": "NIST (National Institute of Standards and Technology, USA)",
        "title": "NIST Guide to the SI, Appendix B: Conversion Factors",
        "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors"
      },
      "source_note": "A mile is exactly 1,609.344 m, following from the 0.9144 m yard.",
      "note": "A marathon is 26.2 miles, which is 42.2 km. A 5K is 3.1 miles.",
      "page": "https://convertbite.com/miles-to-km/",
      "factor": 1.609344
    },
    {
      "id": "cm-feet",
      "family": "length",
      "from": {
        "name": "centimeters",
        "symbol": "cm"
      },
      "to": {
        "name": "feet",
        "symbol": "ft"
      },
      "type": "factor",
      "formula": "ft = cm × 0.032808399",
      "exact": true,
      "source": {
        "organization": "NIST (National Institute of Standards and Technology, USA)",
        "title": "NIST Guide to the SI, Appendix B: Conversion Factors",
        "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors"
      },
      "source_note": "A foot is twelve inches of 25.4 mm: exactly 0.3048 m.",
      "note": "Most of these are heights. 170 cm is about 5 ft 7 in, and 180 cm is about 5 ft 11 in.",
      "page": "https://convertbite.com/cm-to-feet/",
      "factor": 0.0328083989501312
    },
    {
      "id": "ml-floz",
      "family": "volume",
      "from": {
        "name": "milliliters",
        "symbol": "ml"
      },
      "to": {
        "name": "fluid ounces",
        "symbol": "fl oz"
      },
      "type": "factor",
      "formula": "fl oz = ml × 0.0338140227",
      "exact": true,
      "source": {
        "organization": "NIST (National Institute of Standards and Technology, USA)",
        "title": "NIST Guide to the SI, Appendix B: Conversion Factors",
        "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors"
      },
      "source_note": "The US fluid ounce is 1/128 of a US gallon, which is exactly 3.785411784 L.",
      "note": null,
      "page": "https://convertbite.com/ml-to-fl-oz/",
      "factor": 0.0338140227018
    },
    {
      "id": "tbsp-cups",
      "family": "volume",
      "from": {
        "name": "tablespoons",
        "symbol": "tbsp"
      },
      "to": {
        "name": "cups",
        "symbol": "cups"
      },
      "type": "factor",
      "formula": "cups = tbsp × 0.0625",
      "exact": true,
      "source": {
        "organization": "NIST (National Institute of Standards and Technology, USA)",
        "title": "NIST Guide to the SI, Appendix B: Conversion Factors",
        "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors"
      },
      "source_note": "Sixteen tablespoons to a US cup.",
      "note": "16 tablespoons make a US cup. A stick of butter is 8 tablespoons, or half a cup.",
      "page": "https://convertbite.com/tablespoons-to-cups/",
      "factor": 0.0625
    },
    {
      "id": "liters-gallons",
      "family": "volume",
      "from": {
        "name": "liters",
        "symbol": "L"
      },
      "to": {
        "name": "gallons",
        "symbol": "gal"
      },
      "type": "factor",
      "formula": "gal = L × 0.2641720524",
      "exact": true,
      "source": {
        "organization": "NIST (National Institute of Standards and Technology, USA)",
        "title": "NIST Guide to the SI, Appendix B: Conversion Factors",
        "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors"
      },
      "source_note": "A US gallon is exactly 3.785411784 L; an imperial gallon is exactly 4.54609 L.",
      "note": null,
      "page": "https://convertbite.com/liters-to-gallons/",
      "factor": 0.264172052358148
    },
    {
      "id": "ml-cups",
      "family": "volume",
      "from": {
        "name": "milliliters",
        "symbol": "ml"
      },
      "to": {
        "name": "cups",
        "symbol": "cups"
      },
      "type": "factor",
      "formula": "cups = ml × 0.0042267528",
      "exact": true,
      "source": {
        "organization": "NIST (National Institute of Standards and Technology, USA)",
        "title": "NIST Guide to the SI, Appendix B: Conversion Factors",
        "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors"
      },
      "source_note": "The US cup is 1/16 of a US gallon.",
      "note": "A US cup is 237 ml. A metric cup, used in Australia and New Zealand, is 250 ml.",
      "page": "https://convertbite.com/ml-to-cups/",
      "factor": 0.00422675283773
    },
    {
      "id": "kmh-mph",
      "family": "speed",
      "from": {
        "name": "kilometers per hour",
        "symbol": "km/h"
      },
      "to": {
        "name": "miles per hour",
        "symbol": "mph"
      },
      "type": "factor",
      "formula": "mph = km/h × 0.6213711922",
      "exact": true,
      "source": {
        "organization": "NIST (National Institute of Standards and Technology, USA)",
        "title": "NIST Guide to the SI, Appendix B: Conversion Factors",
        "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors"
      },
      "source_note": "Follows from the mile of exactly 1,609.344 m.",
      "note": "Most of these are car speeds. 100 km/h is 62 mph and 120 km/h is 75 mph.",
      "page": "https://convertbite.com/kmh-to-mph/",
      "factor": 0.621371192237334
    },
    {
      "id": "meters-yards",
      "family": "length",
      "from": {
        "name": "meters",
        "symbol": "m"
      },
      "to": {
        "name": "yards",
        "symbol": "yd"
      },
      "type": "factor",
      "formula": "yd = m × 1.0936132983",
      "exact": true,
      "source": {
        "organization": "NIST (National Institute of Standards and Technology, USA)",
        "title": "NIST Guide to the SI, Appendix B: Conversion Factors",
        "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors"
      },
      "source_note": "A yard has been exactly 0.9144 m since 1959.",
      "note": "A meter is slightly longer than a yard — about 3.4 inches more.",
      "page": "https://convertbite.com/meters-to-yards/",
      "factor": 1.09361329833771
    },
    {
      "id": "tbsp-tsp",
      "family": "volume",
      "from": {
        "name": "tablespoons",
        "symbol": "tbsp"
      },
      "to": {
        "name": "teaspoons",
        "symbol": "tsp"
      },
      "type": "factor",
      "formula": "tsp = tbsp × 3",
      "exact": true,
      "source": {
        "organization": "NIST (National Institute of Standards and Technology, USA)",
        "title": "NIST Guide to the SI, Appendix B: Conversion Factors",
        "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors"
      },
      "source_note": "Three teaspoons to a tablespoon in the US and the UK.",
      "note": "Three teaspoons make a tablespoon in the US and the UK. In Australia a tablespoon is four teaspoons.",
      "page": "https://convertbite.com/tablespoons-to-teaspoons/",
      "factor": 3
    },
    {
      "id": "stone-pounds",
      "family": "weight",
      "from": {
        "name": "stone",
        "symbol": "st"
      },
      "to": {
        "name": "pounds",
        "symbol": "lb"
      },
      "type": "factor",
      "formula": "lb = st × 14",
      "exact": true,
      "source": {
        "organization": "NIST (National Institute of Standards and Technology, USA)",
        "title": "NIST Guide to the SI, Appendix B: Conversion Factors",
        "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors"
      },
      "source_note": "A stone is fourteen pounds, by definition.",
      "note": "A stone is exactly 14 pounds. Body weight is still given in stone in the UK and Ireland.",
      "page": "https://convertbite.com/stone-to-pounds/",
      "factor": 14
    },
    {
      "id": "mg-grams",
      "family": "weight",
      "from": {
        "name": "milligrams",
        "symbol": "mg"
      },
      "to": {
        "name": "grams",
        "symbol": "g"
      },
      "type": "factor",
      "formula": "g = mg × 0.001",
      "exact": true,
      "source": {
        "organization": "BIPM (Bureau International des Poids et Mesures)",
        "title": "The International System of Units (SI Brochure)",
        "url": "https://www.bipm.org/en/publications/si-brochure"
      },
      "source_note": "SI prefixes: milli is 10⁻³.",
      "note": "1000 milligrams make a gram. Supplement doses are usually in milligrams.",
      "page": "https://convertbite.com/mg-to-grams/",
      "factor": 0.001
    },
    {
      "id": "kg-stone",
      "family": "weight",
      "from": {
        "name": "kilograms",
        "symbol": "kg"
      },
      "to": {
        "name": "stone",
        "symbol": "st"
      },
      "type": "factor",
      "formula": "st = kg × 0.1574730444",
      "exact": true,
      "source": {
        "organization": "NIST (National Institute of Standards and Technology, USA)",
        "title": "NIST Guide to the SI, Appendix B: Conversion Factors",
        "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors"
      },
      "source_note": "Fourteen pounds of exactly 0.45359237 kg.",
      "note": "In the UK body weight is given in stone and pounds, so 70 kg reads as 11 st 0 lb.",
      "page": "https://convertbite.com/kg-to-stone/",
      "factor": 0.157473044418
    },
    {
      "id": "flour-cups-g",
      "family": "volume",
      "from": {
        "name": "cups of flour",
        "symbol": "cups"
      },
      "to": {
        "name": "grams",
        "symbol": "g"
      },
      "type": "factor",
      "formula": "g = cups × 125",
      "exact": null,
      "source": {
        "organization": "USDA Agricultural Research Service",
        "title": "FoodData Central",
        "url": "https://fdc.nal.usda.gov/"
      },
      "source_note": "USDA FoodData Central lists 1 cup of all-purpose flour (FDC ID 168894) at 125 g.",
      "note": "A cup of all-purpose flour weighs 125 g in USDA's data. How you fill the cup changes it: scooping straight from the bag packs flour down, which is why weighing beats measuring.",
      "page": "https://convertbite.com/cups-of-flour-to-grams/",
      "factor": 125,
      "fdc_id": 168894
    },
    {
      "id": "calories-kj",
      "family": "energy",
      "from": {
        "name": "calories",
        "symbol": "kcal"
      },
      "to": {
        "name": "kilojoules",
        "symbol": "kJ"
      },
      "type": "factor",
      "formula": "kJ = kcal × 4.184",
      "exact": true,
      "source": {
        "organization": "NIST (National Institute of Standards and Technology, USA)",
        "title": "NIST Guide to the SI, Appendix B: Conversion Factors",
        "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors"
      },
      "source_note": "The thermochemical calorie is exactly 4.184 J.",
      "note": "Food labels say “calories” but mean kilocalories. One of those is 4.184 kJ.",
      "page": "https://convertbite.com/calories-to-kj/",
      "factor": 4.184
    },
    {
      "id": "pints-liters",
      "family": "volume",
      "from": {
        "name": "pints",
        "symbol": "pt"
      },
      "to": {
        "name": "liters",
        "symbol": "L"
      },
      "type": "factor",
      "formula": "L = pt × 0.473176473",
      "exact": true,
      "source": {
        "organization": "NIST (National Institute of Standards and Technology, USA)",
        "title": "NIST Guide to the SI, Appendix B: Conversion Factors",
        "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors"
      },
      "source_note": "The US pint is 1/8 of a US gallon; the imperial pint is 1/8 of an imperial gallon.",
      "note": null,
      "page": "https://convertbite.com/pints-to-liters/",
      "factor": 0.473176473
    },
    {
      "id": "grams-cups",
      "family": "volume",
      "from": {
        "name": "grams",
        "symbol": "g"
      },
      "to": {
        "name": "cups",
        "symbol": "cups"
      },
      "type": "two_inputs",
      "formula": "cups = g ÷ g per cup",
      "exact": null,
      "source": {
        "organization": "USDA Agricultural Research Service",
        "title": "FoodData Central",
        "url": "https://fdc.nal.usda.gov/"
      },
      "source_note": "Each ingredient's weight per US cup is the 1-cup portion listed in USDA FoodData Central, with the FDC ID of the food it comes from.",
      "note": "Grams and cups do not convert on their own: one measures weight and the other volume, so the answer depends on what is in the cup. A cup of flour is 125 g and a cup of sugar is 200 g.",
      "page": "https://convertbite.com/grams-to-cups/",
      "depends_on": {
        "name": "ingredient",
        "unit": "g per cup",
        "default": 125
      },
      "options": [
        {
          "label": "All-purpose flour",
          "value": 125,
          "fdc_id": 168894,
          "source": "USDA FoodData Central, FDC ID 168894 (https://fdc.nal.usda.gov/food-details/168894/nutrients)"
        },
        {
          "label": "Granulated sugar",
          "value": 200,
          "fdc_id": 169655,
          "source": "USDA FoodData Central, FDC ID 169655 (https://fdc.nal.usda.gov/food-details/169655/nutrients)"
        },
        {
          "label": "Butter",
          "value": 227,
          "fdc_id": 173430,
          "source": "USDA FoodData Central, FDC ID 173430 (https://fdc.nal.usda.gov/food-details/173430/nutrients)"
        },
        {
          "label": "Powdered sugar",
          "value": 120,
          "fdc_id": 169656,
          "source": "USDA FoodData Central, FDC ID 169656 (https://fdc.nal.usda.gov/food-details/169656/nutrients)"
        },
        {
          "label": "Brown sugar (packed)",
          "value": 220,
          "fdc_id": 168833,
          "source": "USDA FoodData Central, FDC ID 168833 (https://fdc.nal.usda.gov/food-details/168833/nutrients)"
        },
        {
          "label": "Milk",
          "value": 244,
          "fdc_id": 171265,
          "source": "USDA FoodData Central, FDC ID 171265 (https://fdc.nal.usda.gov/food-details/171265/nutrients)"
        },
        {
          "label": "Water",
          "value": 237,
          "fdc_id": 173647,
          "source": "USDA FoodData Central, FDC ID 173647 (https://fdc.nal.usda.gov/food-details/173647/nutrients)"
        },
        {
          "label": "Rice (uncooked)",
          "value": 185,
          "fdc_id": 168877,
          "source": "USDA FoodData Central, FDC ID 168877 (https://fdc.nal.usda.gov/food-details/168877/nutrients)"
        },
        {
          "label": "Rolled oats",
          "value": 81,
          "fdc_id": 173904,
          "source": "USDA FoodData Central, FDC ID 173904 (https://fdc.nal.usda.gov/food-details/173904/nutrients)"
        },
        {
          "label": "Cocoa powder",
          "value": 86,
          "fdc_id": 169593,
          "source": "USDA FoodData Central, FDC ID 169593 (https://fdc.nal.usda.gov/food-details/169593/nutrients)"
        },
        {
          "label": "Plain yogurt",
          "value": 245,
          "fdc_id": 171284,
          "source": "USDA FoodData Central, FDC ID 171284 (https://fdc.nal.usda.gov/food-details/171284/nutrients)"
        },
        {
          "label": "Chocolate chips",
          "value": 168,
          "fdc_id": 167976,
          "source": "USDA FoodData Central, FDC ID 167976 (https://fdc.nal.usda.gov/food-details/167976/nutrients)"
        },
        {
          "label": "Peanut butter",
          "value": 258,
          "fdc_id": 174294,
          "source": "USDA FoodData Central, FDC ID 174294 (https://fdc.nal.usda.gov/food-details/174294/nutrients)"
        },
        {
          "label": "Heavy cream",
          "value": 238,
          "fdc_id": 170859,
          "source": "USDA FoodData Central, FDC ID 170859 (https://fdc.nal.usda.gov/food-details/170859/nutrients)"
        },
        {
          "label": "Blueberries",
          "value": 148,
          "fdc_id": 171711,
          "source": "USDA FoodData Central, FDC ID 171711 (https://fdc.nal.usda.gov/food-details/171711/nutrients)"
        },
        {
          "label": "Cooking oil",
          "value": 218,
          "fdc_id": 172336,
          "source": "USDA FoodData Central, FDC ID 172336 (https://fdc.nal.usda.gov/food-details/172336/nutrients)"
        },
        {
          "label": "Cornstarch",
          "value": 128,
          "fdc_id": 169698,
          "source": "USDA FoodData Central, FDC ID 169698 (https://fdc.nal.usda.gov/food-details/169698/nutrients)"
        },
        {
          "label": "Lentils",
          "value": 192,
          "fdc_id": 172420,
          "source": "USDA FoodData Central, FDC ID 172420 (https://fdc.nal.usda.gov/food-details/172420/nutrients)"
        },
        {
          "label": "Honey",
          "value": 339,
          "fdc_id": 169640,
          "source": "USDA FoodData Central, FDC ID 169640 (https://fdc.nal.usda.gov/food-details/169640/nutrients)"
        },
        {
          "label": "Raisins",
          "value": 145,
          "fdc_id": 168165,
          "source": "USDA FoodData Central, FDC ID 168165 (https://fdc.nal.usda.gov/food-details/168165/nutrients)"
        },
        {
          "label": "Walnuts (chopped)",
          "value": 117,
          "fdc_id": 170187,
          "source": "USDA FoodData Central, FDC ID 170187 (https://fdc.nal.usda.gov/food-details/170187/nutrients)"
        },
        {
          "label": "Maple syrup",
          "value": 315,
          "fdc_id": 169661,
          "source": "USDA FoodData Central, FDC ID 169661 (https://fdc.nal.usda.gov/food-details/169661/nutrients)"
        },
        {
          "label": "Pumpkin (canned puree)",
          "value": 245,
          "fdc_id": 168450,
          "source": "USDA FoodData Central, FDC ID 168450 (https://fdc.nal.usda.gov/food-details/168450/nutrients)"
        },
        {
          "label": "Mayonnaise",
          "value": 220,
          "fdc_id": 171009,
          "source": "USDA FoodData Central, FDC ID 171009 (https://fdc.nal.usda.gov/food-details/171009/nutrients)"
        },
        {
          "label": "Cream cheese",
          "value": 240,
          "fdc_id": 169081,
          "source": "USDA FoodData Central, FDC ID 169081 (https://fdc.nal.usda.gov/food-details/169081/nutrients)"
        },
        {
          "label": "Cottage cheese",
          "value": 225,
          "fdc_id": 172179,
          "source": "USDA FoodData Central, FDC ID 172179 (https://fdc.nal.usda.gov/food-details/172179/nutrients)"
        },
        {
          "label": "Bread flour",
          "value": 137,
          "fdc_id": 168896,
          "source": "USDA FoodData Central, FDC ID 168896 (https://fdc.nal.usda.gov/food-details/168896/nutrients)"
        },
        {
          "label": "Whole wheat flour",
          "value": 120,
          "fdc_id": 168893,
          "source": "USDA FoodData Central, FDC ID 168893 (https://fdc.nal.usda.gov/food-details/168893/nutrients)"
        },
        {
          "label": "Cake flour",
          "value": 137,
          "fdc_id": 169723,
          "source": "USDA FoodData Central, FDC ID 169723 (https://fdc.nal.usda.gov/food-details/169723/nutrients)"
        },
        {
          "label": "Cheese (shredded)",
          "value": 113,
          "fdc_id": 173414,
          "source": "USDA FoodData Central, FDC ID 173414 (https://fdc.nal.usda.gov/food-details/173414/nutrients)"
        },
        {
          "label": "Parmesan (grated)",
          "value": 100,
          "fdc_id": 171247,
          "source": "USDA FoodData Central, FDC ID 171247 (https://fdc.nal.usda.gov/food-details/171247/nutrients)"
        },
        {
          "label": "Oat flour",
          "value": 104,
          "fdc_id": 169741,
          "source": "USDA FoodData Central, FDC ID 169741 (https://fdc.nal.usda.gov/food-details/169741/nutrients)"
        },
        {
          "label": "Egg whites",
          "value": 243,
          "fdc_id": 172183,
          "source": "USDA FoodData Central, FDC ID 172183 (https://fdc.nal.usda.gov/food-details/172183/nutrients)"
        },
        {
          "label": "Rice flour",
          "value": 158,
          "fdc_id": 169714,
          "source": "USDA FoodData Central, FDC ID 169714 (https://fdc.nal.usda.gov/food-details/169714/nutrients)"
        },
        {
          "label": "Almonds (whole)",
          "value": 143,
          "fdc_id": 170567,
          "source": "USDA FoodData Central, FDC ID 170567 (https://fdc.nal.usda.gov/food-details/170567/nutrients)"
        },
        {
          "label": "Shortening",
          "value": 205,
          "fdc_id": 173584,
          "source": "USDA FoodData Central, FDC ID 173584 (https://fdc.nal.usda.gov/food-details/173584/nutrients)"
        },
        {
          "label": "Pasta (dry elbows)",
          "value": 122,
          "fdc_id": 169736,
          "source": "USDA FoodData Central, FDC ID 169736 (https://fdc.nal.usda.gov/food-details/169736/nutrients)"
        },
        {
          "label": "Rice (cooked)",
          "value": 158,
          "fdc_id": 168878,
          "source": "USDA FoodData Central, FDC ID 168878 (https://fdc.nal.usda.gov/food-details/168878/nutrients)"
        },
        {
          "label": "Spinach (raw)",
          "value": 30,
          "fdc_id": 168462,
          "source": "USDA FoodData Central, FDC ID 168462 (https://fdc.nal.usda.gov/food-details/168462/nutrients)"
        },
        {
          "label": "Ricotta",
          "value": 246,
          "fdc_id": 170851,
          "source": "USDA FoodData Central, FDC ID 170851 (https://fdc.nal.usda.gov/food-details/170851/nutrients)"
        },
        {
          "label": "Rye flour",
          "value": 102,
          "fdc_id": 168886,
          "source": "USDA FoodData Central, FDC ID 168886 (https://fdc.nal.usda.gov/food-details/168886/nutrients)"
        },
        {
          "label": "Feta (crumbled)",
          "value": 150,
          "fdc_id": 173420,
          "source": "USDA FoodData Central, FDC ID 173420 (https://fdc.nal.usda.gov/food-details/173420/nutrients)"
        },
        {
          "label": "Pumpkin seeds (pepitas)",
          "value": 129,
          "fdc_id": 170556,
          "source": "USDA FoodData Central, FDC ID 170556 (https://fdc.nal.usda.gov/food-details/170556/nutrients)"
        },
        {
          "label": "Graham cracker crumbs",
          "value": 84,
          "fdc_id": 174957,
          "source": "USDA FoodData Central, FDC ID 174957 (https://fdc.nal.usda.gov/food-details/174957/nutrients)"
        },
        {
          "label": "Coconut milk (canned)",
          "value": 226,
          "fdc_id": 170173,
          "source": "USDA FoodData Central, FDC ID 170173 (https://fdc.nal.usda.gov/food-details/170173/nutrients)"
        },
        {
          "label": "Dates (chopped)",
          "value": 147,
          "fdc_id": 171726,
          "source": "USDA FoodData Central, FDC ID 171726 (https://fdc.nal.usda.gov/food-details/171726/nutrients)"
        },
        {
          "label": "Mini marshmallows",
          "value": 50,
          "fdc_id": 167995,
          "source": "USDA FoodData Central, FDC ID 167995 (https://fdc.nal.usda.gov/food-details/167995/nutrients)"
        },
        {
          "label": "Evaporated milk",
          "value": 252,
          "fdc_id": 171276,
          "source": "USDA FoodData Central, FDC ID 171276 (https://fdc.nal.usda.gov/food-details/171276/nutrients)"
        },
        {
          "label": "Pistachios (shelled)",
          "value": 123,
          "fdc_id": 170184,
          "source": "USDA FoodData Central, FDC ID 170184 (https://fdc.nal.usda.gov/food-details/170184/nutrients)"
        },
        {
          "label": "Sesame seeds",
          "value": 144,
          "fdc_id": 170150,
          "source": "USDA FoodData Central, FDC ID 170150 (https://fdc.nal.usda.gov/food-details/170150/nutrients)"
        },
        {
          "label": "Corn syrup (light)",
          "value": 341,
          "fdc_id": 168837,
          "source": "USDA FoodData Central, FDC ID 168837 (https://fdc.nal.usda.gov/food-details/168837/nutrients)"
        },
        {
          "label": "Breadcrumbs (dry)",
          "value": 108,
          "fdc_id": 174928,
          "source": "USDA FoodData Central, FDC ID 174928 (https://fdc.nal.usda.gov/food-details/174928/nutrients)"
        },
        {
          "label": "Cashews (roasted)",
          "value": 137,
          "fdc_id": 170571,
          "source": "USDA FoodData Central, FDC ID 170571 (https://fdc.nal.usda.gov/food-details/170571/nutrients)"
        },
        {
          "label": "Shredded coconut (sweetened)",
          "value": 93,
          "fdc_id": 168586,
          "source": "USDA FoodData Central, FDC ID 168586 (https://fdc.nal.usda.gov/food-details/168586/nutrients)"
        },
        {
          "label": "Sweetened condensed milk",
          "value": 306,
          "fdc_id": 171275,
          "source": "USDA FoodData Central, FDC ID 171275 (https://fdc.nal.usda.gov/food-details/171275/nutrients)"
        },
        {
          "label": "Chickpeas (dried)",
          "value": 200,
          "fdc_id": 173756,
          "source": "USDA FoodData Central, FDC ID 173756 (https://fdc.nal.usda.gov/food-details/173756/nutrients)"
        },
        {
          "label": "Peanuts",
          "value": 146,
          "fdc_id": 172430,
          "source": "USDA FoodData Central, FDC ID 172430 (https://fdc.nal.usda.gov/food-details/172430/nutrients)"
        },
        {
          "label": "Tomato paste",
          "value": 262,
          "fdc_id": 170459,
          "source": "USDA FoodData Central, FDC ID 170459 (https://fdc.nal.usda.gov/food-details/170459/nutrients)"
        },
        {
          "label": "Granola",
          "value": 122,
          "fdc_id": 171646,
          "source": "USDA FoodData Central, FDC ID 171646 (https://fdc.nal.usda.gov/food-details/171646/nutrients)"
        },
        {
          "label": "Semolina flour",
          "value": 167,
          "fdc_id": 169715,
          "source": "USDA FoodData Central, FDC ID 169715 (https://fdc.nal.usda.gov/food-details/169715/nutrients)"
        },
        {
          "label": "Raspberries",
          "value": 123,
          "fdc_id": 167755,
          "source": "USDA FoodData Central, FDC ID 167755 (https://fdc.nal.usda.gov/food-details/167755/nutrients)"
        },
        {
          "label": "Carrots (chopped)",
          "value": 128,
          "fdc_id": 170393,
          "source": "USDA FoodData Central, FDC ID 170393 (https://fdc.nal.usda.gov/food-details/170393/nutrients)"
        },
        {
          "label": "Onion (chopped)",
          "value": 160,
          "fdc_id": 170000,
          "source": "USDA FoodData Central, FDC ID 170000 (https://fdc.nal.usda.gov/food-details/170000/nutrients)"
        },
        {
          "label": "Lard",
          "value": 205,
          "fdc_id": 171401,
          "source": "USDA FoodData Central, FDC ID 171401 (https://fdc.nal.usda.gov/food-details/171401/nutrients)"
        },
        {
          "label": "Mushrooms (sliced)",
          "value": 70,
          "fdc_id": 169251,
          "source": "USDA FoodData Central, FDC ID 169251 (https://fdc.nal.usda.gov/food-details/169251/nutrients)"
        },
        {
          "label": "Green peas (frozen)",
          "value": 134,
          "fdc_id": 170016,
          "source": "USDA FoodData Central, FDC ID 170016 (https://fdc.nal.usda.gov/food-details/170016/nutrients)"
        },
        {
          "label": "Zucchini (chopped)",
          "value": 124,
          "fdc_id": 169291,
          "source": "USDA FoodData Central, FDC ID 169291 (https://fdc.nal.usda.gov/food-details/169291/nutrients)"
        },
        {
          "label": "Corn kernels (frozen)",
          "value": 136,
          "fdc_id": 168398,
          "source": "USDA FoodData Central, FDC ID 168398 (https://fdc.nal.usda.gov/food-details/168398/nutrients)"
        },
        {
          "label": "Kale (raw)",
          "value": 21,
          "fdc_id": 168421,
          "source": "USDA FoodData Central, FDC ID 168421 (https://fdc.nal.usda.gov/food-details/168421/nutrients)"
        }
      ]
    },
    {
      "id": "kg-lbs",
      "family": "weight",
      "from": {
        "name": "kilograms",
        "symbol": "kg"
      },
      "to": {
        "name": "pounds",
        "symbol": "lb"
      },
      "type": "factor",
      "formula": "lb = kg × 2.2046226218",
      "exact": true,
      "source": {
        "organization": "NIST (National Institute of Standards and Technology, USA)",
        "title": "NIST Guide to the SI, Appendix B: Conversion Factors",
        "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors"
      },
      "source_note": "The avoirdupois pound has been exactly 0.45359237 kg since 1959.",
      "note": "A kilogram is 2.2 pounds. Body weight in the US is given in pounds, so 70 kg reads as 154 lb.",
      "page": "https://convertbite.com/kg-to-lbs/",
      "factor": 2.20462262184878
    },
    {
      "id": "inches-feet",
      "family": "length",
      "from": {
        "name": "inches",
        "symbol": "in"
      },
      "to": {
        "name": "feet",
        "symbol": "ft"
      },
      "type": "factor",
      "formula": "ft = in × 0.0833333333",
      "exact": true,
      "source": {
        "organization": "NIST (National Institute of Standards and Technology, USA)",
        "title": "NIST Guide to the SI, Appendix B: Conversion Factors",
        "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors"
      },
      "source_note": "Twelve inches to a foot, by definition.",
      "note": "Twelve inches make a foot. Heights are usually written as feet and inches, like 5 ft 9 in.",
      "page": "https://convertbite.com/inches-to-feet/",
      "factor": 0.0833333333333333
    },
    {
      "id": "meters-feet",
      "family": "length",
      "from": {
        "name": "meters",
        "symbol": "m"
      },
      "to": {
        "name": "feet",
        "symbol": "ft"
      },
      "type": "factor",
      "formula": "ft = m × 3.280839895",
      "exact": true,
      "source": {
        "organization": "NIST (National Institute of Standards and Technology, USA)",
        "title": "NIST Guide to the SI, Appendix B: Conversion Factors",
        "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors"
      },
      "source_note": "A foot has been exactly 0.3048 m since 1959.",
      "note": "A meter is 3.28 feet. Swimming pools, running tracks and ceiling heights are the usual reasons to convert this.",
      "page": "https://convertbite.com/meters-to-feet/",
      "factor": 3.28083989501312
    },
    {
      "id": "cups-oz",
      "family": "volume",
      "from": {
        "name": "cups",
        "symbol": "cups"
      },
      "to": {
        "name": "fluid ounces",
        "symbol": "fl oz"
      },
      "type": "factor",
      "formula": "fl oz = cups × 8",
      "exact": true,
      "source": {
        "organization": "NIST (National Institute of Standards and Technology, USA)",
        "title": "NIST Guide to the SI, Appendix B: Conversion Factors",
        "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors"
      },
      "source_note": "Eight fluid ounces to a US cup, by definition.",
      "note": "A US cup is always 8 fluid ounces, because both measure volume. Its WEIGHT in ounces is a different question and depends on what is in the cup — a cup of flour weighs about 4.4 oz and a cup of sugar about 7 oz.",
      "page": "https://convertbite.com/cups-to-fl-oz/",
      "factor": 8
    },
    {
      "id": "grams-oz",
      "family": "weight",
      "from": {
        "name": "grams",
        "symbol": "g"
      },
      "to": {
        "name": "ounces",
        "symbol": "oz"
      },
      "type": "factor",
      "formula": "oz = g × 0.0352739619",
      "exact": true,
      "source": {
        "organization": "NIST (National Institute of Standards and Technology, USA)",
        "title": "NIST Guide to the SI, Appendix B: Conversion Factors",
        "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors"
      },
      "source_note": "The avoirdupois ounce is 1/16 of a pound: exactly 28.349523125 g.",
      "note": "An ounce is 28.35 g. This is weight — fluid ounces measure volume and are a different unit with the same name.",
      "page": "https://convertbite.com/grams-to-oz/",
      "factor": 0.0352739619495804
    },
    {
      "id": "grams-pounds",
      "family": "weight",
      "from": {
        "name": "grams",
        "symbol": "g"
      },
      "to": {
        "name": "pounds",
        "symbol": "lb"
      },
      "type": "factor",
      "formula": "lb = g × 0.0022046226",
      "exact": true,
      "source": {
        "organization": "NIST (National Institute of Standards and Technology, USA)",
        "title": "NIST Guide to the SI, Appendix B: Conversion Factors",
        "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors"
      },
      "source_note": "Derived from the pound of exactly 0.45359237 kg.",
      "note": "A pound is 453.6 g. Recipes from the US often give meat in pounds.",
      "page": "https://convertbite.com/grams-to-pounds/",
      "factor": 0.00220462262184878
    },
    {
      "id": "mm-cm",
      "family": "length",
      "from": {
        "name": "millimeters",
        "symbol": "mm"
      },
      "to": {
        "name": "centimeters",
        "symbol": "cm"
      },
      "type": "factor",
      "formula": "cm = mm × 0.1",
      "exact": true,
      "source": {
        "organization": "BIPM (Bureau International des Poids et Mesures)",
        "title": "The International System of Units (SI Brochure)",
        "url": "https://www.bipm.org/en/publications/si-brochure"
      },
      "source_note": "SI prefixes: milli is 10⁻³ and centi is 10⁻².",
      "note": "Ten millimeters make a centimeter — just move the decimal point one place.",
      "page": "https://convertbite.com/mm-to-cm/",
      "factor": 0.1
    },
    {
      "id": "acres-sqft",
      "family": "area",
      "from": {
        "name": "acres",
        "symbol": "ac"
      },
      "to": {
        "name": "square feet",
        "symbol": "sq ft"
      },
      "type": "factor",
      "formula": "sq ft = ac × 43560",
      "exact": true,
      "source": {
        "organization": "NIST (National Institute of Standards and Technology, USA)",
        "title": "NIST Guide to the SI, Appendix B: Conversion Factors",
        "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors"
      },
      "source_note": "An acre is 43,560 square feet, by definition.",
      "note": "An acre is 43,560 square feet — about the size of an American football field without the end zones.",
      "page": "https://convertbite.com/acres-to-square-feet/",
      "factor": 43560
    },
    {
      "id": "minutes-hours",
      "family": "time",
      "from": {
        "name": "minutes",
        "symbol": "min"
      },
      "to": {
        "name": "hours",
        "symbol": "h"
      },
      "type": "factor",
      "formula": "h = min × 0.0166666667",
      "exact": true,
      "source": {
        "organization": "BIPM (Bureau International des Poids et Mesures)",
        "title": "The International System of Units (SI Brochure)",
        "url": "https://www.bipm.org/en/publications/si-brochure"
      },
      "source_note": "The SI accepts the minute and the hour for use with it: exactly 60 and 3,600 seconds.",
      "note": "Sixty minutes make an hour. 90 minutes is 1.5 hours and 150 minutes is 2.5.",
      "page": "https://convertbite.com/minutes-to-hours/",
      "factor": 0.0166666666666667
    },
    {
      "id": "kelvin-celsius",
      "family": "temperature",
      "from": {
        "name": "Kelvin",
        "symbol": "K"
      },
      "to": {
        "name": "Celsius",
        "symbol": "°C"
      },
      "type": "linear",
      "formula": "°C = K − 273.15",
      "exact": true,
      "source": {
        "organization": "BIPM (Bureau International des Poids et Mesures)",
        "title": "The International System of Units (SI Brochure)",
        "url": "https://www.bipm.org/en/publications/si-brochure"
      },
      "source_note": "The degree Celsius is the kelvin shifted by exactly 273.15, as fixed by the SI.",
      "note": "Kelvin starts at absolute zero, so it is Celsius shifted by 273.15. There are no negative kelvin.",
      "page": "https://convertbite.com/kelvin-to-celsius/",
      "slope": 1,
      "offset": -273.15
    },
    {
      "id": "weeks-months",
      "family": "time",
      "from": {
        "name": "weeks",
        "symbol": "weeks"
      },
      "to": {
        "name": "months",
        "symbol": "months"
      },
      "type": "factor",
      "formula": "months = weeks × 0.230137",
      "exact": null,
      "source": null,
      "source_note": "A calendar month has no fixed length; 4.35 weeks is the average across a year.",
      "note": "Most people asking this are counting a pregnancy: 20 weeks is about 4.6 months, 26 weeks about 6, and 36 weeks about 8.3. Doctors track pregnancies in weeks precisely because months are uneven.",
      "page": "https://convertbite.com/weeks-to-months/",
      "factor": 0.230137
    },
    {
      "id": "sqft-sqm",
      "family": "area",
      "from": {
        "name": "square feet",
        "symbol": "sq ft"
      },
      "to": {
        "name": "square meters",
        "symbol": "m²"
      },
      "type": "factor",
      "formula": "m² = sq ft × 0.09290304",
      "exact": true,
      "source": {
        "organization": "NIST (National Institute of Standards and Technology, USA)",
        "title": "NIST Guide to the SI, Appendix B: Conversion Factors",
        "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors"
      },
      "source_note": "The square foot follows from the foot of exactly 0.3048 m.",
      "note": "A square meter is about 10.8 square feet. Apartment sizes are given in square feet in the US and in square meters almost everywhere else.",
      "page": "https://convertbite.com/square-feet-to-square-meters/",
      "factor": 0.09290304
    },
    {
      "id": "quarts-cups",
      "family": "volume",
      "from": {
        "name": "quarts",
        "symbol": "qt"
      },
      "to": {
        "name": "cups",
        "symbol": "cups"
      },
      "type": "factor",
      "formula": "cups = qt × 4",
      "exact": true,
      "source": {
        "organization": "NIST (National Institute of Standards and Technology, USA)",
        "title": "NIST Guide to the SI, Appendix B: Conversion Factors",
        "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors"
      },
      "source_note": "Four cups to a US quart, by definition.",
      "note": "Four US cups make a quart. A UK quart is bigger — about 4.8 US cups — but recipes online almost always mean the US one.",
      "page": "https://convertbite.com/quarts-to-cups/",
      "factor": 4
    },
    {
      "id": "kw-hp",
      "family": "power",
      "from": {
        "name": "kilowatts",
        "symbol": "kW"
      },
      "to": {
        "name": "horsepower",
        "symbol": "hp"
      },
      "type": "factor",
      "formula": "hp = kW × 1.3410220896",
      "exact": false,
      "source": {
        "organization": "NIST (National Institute of Standards and Technology, USA)",
        "title": "NIST Guide to the SI, Appendix B: Conversion Factors",
        "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors"
      },
      "source_note": "Mechanical horsepower is 745.6998… W; metric horsepower (PS) is exactly 735.49875 W.",
      "note": null,
      "page": "https://convertbite.com/kw-to-hp/",
      "factor": 1.34102208959503
    },
    {
      "id": "hectares-acres",
      "family": "area",
      "from": {
        "name": "hectares",
        "symbol": "ha"
      },
      "to": {
        "name": "acres",
        "symbol": "ac"
      },
      "type": "factor",
      "formula": "ac = ha × 2.4710538147",
      "exact": true,
      "source": {
        "organization": "NIST (National Institute of Standards and Technology, USA)",
        "title": "NIST Guide to the SI, Appendix B: Conversion Factors",
        "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors"
      },
      "source_note": "A hectare is exactly 10,000 m²; the acre follows from the foot.",
      "note": "A hectare is 2.47 acres. Land in Europe is measured in hectares and in the US and UK in acres.",
      "page": "https://convertbite.com/hectares-to-acres/",
      "factor": 2.47105381467165
    },
    {
      "id": "butter-cups",
      "family": "volume",
      "from": {
        "name": "sticks of butter",
        "symbol": "sticks"
      },
      "to": {
        "name": "cups",
        "symbol": "cups"
      },
      "type": "factor",
      "formula": "cups = sticks × 0.5",
      "exact": null,
      "source": null,
      "source_note": "A stick of butter is a convention of US packaging, not a standardized unit: half a cup, or 8 tablespoons. USDA FoodData Central weighs one stick at 113 g (FDC ID 173430).",
      "note": "A US stick of butter is half a cup, which is 8 tablespoons or 113 g. Butter sold outside the US does not come in sticks.",
      "page": "https://convertbite.com/sticks-of-butter-to-cups/",
      "factor": 0.5
    },
    {
      "id": "teaspoons-ml",
      "family": "volume",
      "from": {
        "name": "milliliters",
        "symbol": "ml"
      },
      "to": {
        "name": "teaspoons",
        "symbol": "tsp"
      },
      "type": "factor",
      "formula": "tsp = ml × 0.2028841362",
      "exact": true,
      "source": {
        "organization": "NIST (National Institute of Standards and Technology, USA)",
        "title": "NIST Guide to the SI, Appendix B: Conversion Factors",
        "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors"
      },
      "source_note": "NIST lists the US teaspoon as 4.92892159375 ml — exactly 1/768 of a US gallon (3.785411784 L).",
      "note": "Recipes online almost always mean the US teaspoon of 4.93 ml. On US medicine and nutrition labels a teaspoon is rounded to exactly 5 ml (21 CFR 101.9), the same as a metric teaspoon, so both are here to check.",
      "page": "https://convertbite.com/ml-to-teaspoons/",
      "factor": 0.20288413621105797
    }
  ]
}