Where do these numbers come from?
- King Arthur BakingIngredient Weight Chart, grams per cup (spooned and levelled)retrieved Oct 23, 2026
- NISTSP 811: 1 US cup = 236.5882365 mL, 1 oz = 28.349523125 gcurrent edition
- NISTHandbook 44, weights and measurescurrent edition
Checked Oct 23, 2026. King Arthur lists 1 cup of all-purpose flour as 120 g. 100 g ÷ 120 g = 0.833 cup, which this converter shows as 0.833 cups and rounds to the nearest kitchen measure, 7/8 cup.
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Onions (fresh, diced): grams per cup
King Arthur Baking lists 1 cup of onions (fresh, diced) at 142 g, which works out to 142 g per US cup, 8.9 g per tablespoon and 2.96 g per teaspoon. So 100 g of onions (fresh, diced) is about 2/3 cup (0.7 cups).
Cup measures are approximate for dry ingredients; for consistent results, weigh them.
Grams to cups chart
| Grams | Kitchen measure | Cups (decimal) | Tablespoons |
|---|---|---|---|
| 25 g | 1/8 cup | 0.176 | 2.8 |
| 50 g | 1/3 cup | 0.352 | 5.6 |
| 100 g | 2/3 cup | 0.704 | 11.3 |
| 125 g | 7/8 cup | 0.88 | 14.1 |
| 150 g | 1 cup | 1.056 | 16.9 |
| 200 g | 1 3/8 cup | 1.408 | 22.5 |
| 250 g | 1 3/4 cup | 1.761 | 28.2 |
| 300 g | 2 1/8 cup | 2.113 | 33.8 |
| 400 g | 2 7/8 cup | 2.817 | 45.1 |
| 500 g | 3 1/2 cup | 3.521 | 56.3 |
| 1000 g | 7 cup | 7.042 | 112.7 |
Cups to grams
| Volume | Grams | Ounces |
|---|---|---|
| 1/4 cup | 36 g | 1.25 oz |
| 1/3 cup | 47 g | 1.67 oz |
| 1/2 cup | 71 g | 2.5 oz |
| 2/3 cup | 95 g | 3.34 oz |
| 3/4 cup | 106 g | 3.76 oz |
| 1 cup | 142 g | 5.01 oz |
| 1 tablespoon | 9 g | 0.31 oz |
| 1 teaspoon | 3 g | 0.1 oz |
Source: King Arthur Baking, Ingredient Weight Chart. Kitchen measures are rounded to the nearest common cup fraction.
Related
Frequently asked questions
How many grams is 1 cup of onions (fresh, diced)?
About 142 g (King Arthur Baking chart).
How many cups is 100 g of onions (fresh, diced)?
About 2/3 cup (0.7 cups).
How many grams in a tablespoon of onions (fresh, diced)?
About 8.9 g.