How many grams in a cup of walnut halves?
One US cup of walnut halves weighs 113 g.
Halves, loosely filled. Chopped they pack tighter and run heavier.
Every amount a recipe asks for
| walnut halves | In grams |
|---|---|
| ¼ cup | 28 g |
| ⅓ cup | 38 g |
| ½ cup | 57 g |
| ⅔ cup | 75 g |
| ¾ cup | 85 g |
| 1 cup | 113 g |
| 2 cups | 226 g |
Going the other way
If you have a weight and need cups — rounded to the quarter cup, because that is the finest division a cup set actually has:
| 50 g | ½ cup |
| 100 g | 1 cup |
| 200 g | 1 ¾ cups |
| 250 g | 2 ¼ cups |
| 500 g | 4 ½ cups |
| 1000 g | 8 ¾ cups |
Which cup does your recipe mean?
“A cup” is four different volumes, so the weight above changes with the recipe's origin. Same walnut halves, same cup measure, different answer:
| Cup | Volume | One cup weighs | Used in |
|---|---|---|---|
| US customary | 237 ml | 113 g | American recipes and measuring cups |
| US legal | 240 ml | 114 g | nutrition labels |
| Metric | 250 ml | 119 g | Australia, New Zealand, Canada |
| Imperial | 284 ml | 135 g | British recipes before roughly 1980 |
113 g per US customary cup. Source: King Arthur Baking ingredient weight chart (walnut halves). Published values differ by a few grams between references; for anything but bread, a few grams is noise.
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Try it on the recipe you're reading, or read why a cup isn't a cup — four volumes, the 25% flour problem, and the Australian tablespoon that's a third too big.
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