Fahrenheit to Celsius
40°F = 4.44°C
For any other value: °C = (°F − 32) ÷ 1.8
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4.44 °C
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Fahrenheit to Celsius chart
The values people look up most.
| Fahrenheit | Celsius |
|---|---|
| 40 °F | 4.44 °C |
| 30 °F | -1.11 °C |
| 20 °F | -6.67 °C |
| 180 °F | 82.2 °C |
| 200 °F | 93.3 °C |
| 100 °F | 37.8 °C |
| 32 °F | 0 °C |
| 23 °F | -5 °C |
| 18 °F | -7.78 °C |
| 38 °F | 3.33 °C |
| 25 °F | -3.89 °C |
| 90 °F | 32.2 °C |
| 33 °F | 0.556 °C |
| 10 °F | -12.2 °C |
| 0 °F | -17.8 °C |
| 45 °F | 7.22 °C |
| 17 °F | -8.33 °C |
| 28 °F | -2.22 °C |
| 65 °F | 18.3 °C |
| 42 °F | 5.56 °C |
| 70 °F | 21.1 °C |
| 110 °F | 43.3 °C |
| 27 °F | -2.78 °C |
| 72 °F | 22.2 °C |
| 22 °F | -5.56 °C |
| 60 °F | 15.6 °C |
| 98 °F | 36.7 °C |
| 67 °F | 19.4 °C |
| 55 °F | 12.8 °C |
| 105 °F | 40.6 °C |
Formula
°C = (°F − 32) ÷ 1.8
37 °C is normal body temperature and 38 °C is a fever. Ovens usually sit between 160 °C and 200 °C.
Where this number comes from
This factor is exact, not rounded. The relation between the scales is exact; the kelvin and the degree Celsius are defined by the SI.
Source: The International System of Units (SI Brochure), BIPM (Bureau International des Poids et Mesures).
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