How many grams in a cup of onion?
1 cup of onion (chopped) weighs 160 grams, or 5.6 ounces.
Written with AI help from the sources listed, and published by Cory. Sources: King Arthur Baking's ingredient weight chart. Spot a mistake? Tell us and we'll fix it.
How many grams are in a cup?
| Onion | Grams | Ounces |
|---|---|---|
| 1 cup | 160 g | 5.6 oz |
| ¾ cup | 120 g | 4.2 oz |
| ⅔ cup | 107 g | 3.8 oz |
| ½ cup | 80 g | 2.8 oz |
| ⅓ cup | 53 g | 1.9 oz |
| ¼ cup | 40 g | 1.4 oz |
| 1 tablespoon | 10 g | 0.4 oz |
| 1 teaspoon | 3.3 g | 0.1 oz |
How many cups are in a weight?
| Weight | Cups |
|---|---|
| 25 g | about ⅛ cup |
| 50 g | about ¼ cup |
| 100 g | ⅝ cup |
| 200 g | 1 ¼ cups |
| 250 g | about 1 ½ cups |
| 500 g | 3 ⅛ cups |
Why weigh it instead of using cups?
A kitchen scale is more accurate than cups, especially in baking, where small differences change the texture. Weighing also means fewer cups to wash.
US cups (236.6 ml). Checked against USDA FoodData Central and King Arthur Baking's ingredient weight chart; brands and how you fill the cup make small differences.
Cups or grams, your choice. Pantry to Pan shows any recipe as written,
in US cups or in metric, and scales every amount when you change the servings.
Get started freeGuides that help
- Weighing ingredients for bakingMeasuring baking ingredients by weight on a kitchen scale instead of by cups and spoons.
- Measuring ingredients (dry vs. liquid)Using the right cups and method so your amounts match what the recipe intended.
- Room-temperature ingredientsLetting butter, eggs and dairy warm to about 65-70°F before mixing them into a batter.
- Creaming butter and sugarBeating soft butter with sugar until pale and fluffy — the start of most cakes and cookies.