How many grams are in 1 cup of Walnuts?
One US cup (240 ml) of walnuts, chopped weighs about 117 grams. A US customary cup (236.6 ml) holds about 115 g, a metric cup (250 ml) about 122 g, and an imperial cup (284.1 ml) about 139 g.
Cups of Walnuts to grams
One US cup (240 ml) of walnuts, chopped weighs about 117 grams (4.1 oz), measured scooped.
Walnuts change weight-per-cup with every knife stroke: halves nest loosely at about 100 g per cup, chopped pieces pack to 117 g, and ground walnuts settle denser still.
Ingredient
117 grams
US cup · walnuts, chopped · scooped
More precise value: 117 grams
- Cup standard
- US cup · 240 ml
- Ingredient
- walnuts, chopped
- Method
- scooped
- Density
- 0.488 g/ml
- Sources
- USDA FDC · King Arthur
- Reviewed
- 2026-08
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Walnuts by cup standard
The same volume weighs more in a larger cup. These figures scale the reference weight of 117 g per 240 ml US cup by each cup standard’s exact volume.
| Cups | US cup | US customary cup | Metric cup | Imperial cup |
|---|---|---|---|---|
| ⅛ | 15 g | 14 g | 15 g | 17 g |
| ¼ | 29 g | 29 g | 30 g | 35 g |
| ⅓ | 39 g | 38 g | 41 g | 46 g |
| ½ | 59 g | 58 g | 61 g | 69 g |
| ⅔ | 78 g | 77 g | 81 g | 92 g |
| ¾ | 88 g | 87 g | 91 g | 104 g |
| 1 | 117 g | 115 g | 122 g | 139 g |
| 1½ | 176 g | 173 g | 183 g | 208 g |
| 2 | 234 g | 231 g | 244 g | 277 g |
walnuts, chopped, scooped. Reviewed 2026-08.
Tablespoons and teaspoons
Spoon measures use the US definitions: 1 tablespoon = 14.79 ml (16 per cup) and 1 teaspoon = 4.93 ml (3 per tablespoon).
| Measure | Grams (g) | Ounces (oz) |
|---|---|---|
| 1 tsp | 2.4 | 0.08 |
| 1 tbsp | 7.2 | 0.25 |
| 2 tbsp | 14.4 | 0.51 |
| 4 tbsp (¼ cup) | 28.8 | 1.02 |
| 8 tbsp (½ cup) | 57.7 | 2.03 |
| 16 tbsp (1 cup) | 115.3 | 4.07 |
How to measure Walnuts by volume
- Chop first, then measure — “1 cup walnuts, chopped” and “1 cup chopped walnuts” differ by real grams.
- Fill loosely and level; nuts should not be pressed down.
- Pecans measure a few grams lighter per cup if you are substituting.
Why the weight varies
Chopped walnuts pack tighter than halves: the finer the chop, the heavier the cup.
In quick breads and brownies nuts are forgiving, but European tortes built on ground nuts instead of flour need real accuracy — there the gram figure is structural, not garnish.
Which value we publish, and why
We publish 117 g per US cup of chopped walnuts (USDA FoodData Central); King Arthur lists 113 g.
Values you may see elsewhere
Sources: USDA FDC · King Arthur . Reference weight verified against USDA FDC, King Arthur. Reviewed 2026-08. Conversions are estimates — ingredient weight varies with packing and brand.
Frequently asked questions
How many grams is 1 tablespoon of Walnuts?
One US tablespoon (14.79 ml) of walnuts, chopped weighs about 7.2 g, and one teaspoon (4.93 ml) about 2.4 g.
How many ounces is 1 cup of Walnuts?
One US cup of walnuts, chopped weighs about 4.1 oz (117 g). Note these are weight ounces — for liquids, don’t confuse them with fluid ounces, which measure volume.