Cups of onion to grams
1 cup of onion = 160 g
Onion (chopped) in USDA's data: ½ cup = 80 g · ¼ cup = 40 g · 1 tbsp = 10 g. Sliced, a cup is 115 g.
Converter
Ingredient: chopped onion, 160 g per US cup
160 g
That is 5.64 oz by weight.
Type a number — fractions like 3/4 or 1 1/2 work too.
Cups of onion in grams
US cups, level. Spoon amounts are worked out from the cup weight.
| Amount | Grams | Ounces |
|---|---|---|
| 1 tsp | 3.3 g | 0.12 oz |
| 1 tbsp | 10 g | 0.35 oz |
| ⅛ cup | 20 g | 0.71 oz |
| ¼ cup | 40 g | 1.41 oz |
| ⅓ cup | 53.3 g | 1.88 oz |
| ½ cup | 80 g | 2.82 oz |
| ⅔ cup | 106.7 g | 3.76 oz |
| ¾ cup | 120 g | 4.23 oz |
| 1 cup | 160 g | 5.64 oz |
| 1½ cups | 240 g | 8.47 oz |
| 2 cups | 320 g | 11.3 oz |
| 3 cups | 480 g | 16.9 oz |
| 4 cups | 640 g | 22.6 oz |
Grams of onion in cups
| Grams | Cups | Measure |
|---|---|---|
| 25 g | 0.16 | ≈ 3 tbsp |
| 50 g | 0.31 | ≈ ⅓ cup |
| 75 g | 0.47 | ≈ ½ cup |
| 100 g | 0.63 | ½ cup + 2 tbsp |
| 125 g | 0.78 | ≈ ¾ cup + 1 tbsp |
| 150 g | 0.94 | ¾ cup + 3 tbsp |
| 200 g | 1.25 | 1¼ cups |
| 250 g | 1.56 | 1½ cups + 1 tbsp |
| 300 g | 1.88 | 1¾ cups + 2 tbsp |
| 400 g | 2.5 | 2½ cups |
| 500 g | 3.13 | 3 cups + 2 tbsp |
These figures are for chopped raw onion: 160 g a cup. Sliced onion fills a cup more loosely, 115 g. A medium onion, 2½ inches across, weighs about 110 g and gives roughly ⅔ cup chopped; a tablespoon of chopped onion is 10 g.
Where this number comes from
USDA FoodData Central lists 1 cup, chopped of “Onions, raw” at 160 g, and 1 cup, sliced at 115 g (FDC ID 170000, SR Legacy).
Everything else is worked out from that figure: spoons from 1 cup = 16 tablespoons = 48 teaspoons, and ounces and pounds from their exact definitions (1 oz = 28.349523125 g, 1 lb = 453.59237 g, NIST).
Source: FoodData Central, USDA Agricultural Research Service.
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