How many grams in a cup of chopped walnuts?

1 cup of chopped walnuts weighs 117 g by USDA. King Arthur Baking lists 113 g. The two figures are 4 g apart.

Sources: USDA FoodData Central, King Arthur Baking ingredient weight chart · Checked October 16, 2026

Amount

Unit

117 g 4.1 oz

Sources range from 113 g to 117 g for 1 cup.

Converting a whole recipe?

Sous Chef converts every ingredient in a recipe to grams and millilitres in one tap, rounded to amounts you would actually weigh.

Chopped walnuts cups to grams table

Using 117 g per US cup. A US cup is 236.6 mL; 1 cup is 16 tablespoons.

Chopped walnuts cups to grams
US cups	Grams	Ounces	Tablespoons
⅛ cup	15 g	0.5 oz	2
¼ cup	29 g	1 oz	4
⅓ cup	39 g	1.4 oz	5.3
½ cup	59 g	2.1 oz	8
⅔ cup	78 g	2.8 oz	10.7
¾ cup	88 g	3.1 oz	12
1 cup	117 g	4.1 oz	16
1½ cups	176 g	6.2 oz	24
2 cups	234 g	8.3 oz	32
3 cups	351 g	12.4 oz	48
4 cups	468 g	16.5 oz	64

Why sources disagree

Chop size changes how much fits in a cup, which explains the small gap. USDA lists other cuts separately: 80 g per cup of ground walnuts and 100 g per cup of shelled halves. Walnuts are a tree nut, one of the FDA's major allergens, so tell anyone you bake for.

Source	Listed as	Grams per cup
USDA FoodData Central Nuts, walnuts, english	1 cup, chopped = 117 g	117 g
King Arthur Baking ingredient weight chart Walnuts (chopped)	1 cup = 113 g	113 g

Bold row is the figure the calculator uses. Figures listed for a smaller measure are multiplied up to one cup.

How to measure chopped walnuts accurately

Chop the walnuts first, then measure, if the recipe says chopped walnuts.
Walnuts are a tree nut: label baked goods for guests with nut allergies.
Weigh on a digital scale when you can, since cup scoops vary from cook to cook.

Convert the whole recipe, not one line

Converting a recipe one ingredient at a time is where mistakes slip in. Sous Chef imports a recipe from a link or pasted text, then converts every ingredient at once: dry ingredients and butter to grams, liquids to millilitres. Tap again to go back to cups.

US recipe

2¼ cups all-purpose flour
1 cup butter, softened
¾ cup brown sugar, packed
1½ cups milk

In Sous Chef, after "Convert to metric"

275 g all-purpose flour
225 g butter, softened
170 g brown sugar, packed
350 ml milk

Example output. Sous Chef rounds to amounts you would actually weigh, so its numbers can differ by a few grams from the table above.

Common questions

How many grams is half a cup of chopped walnuts?

Half a cup of chopped walnuts is about 58.5 g, using 117 g per cup.

How many grams is 1 tablespoon of chopped walnuts?

1 tablespoon of chopped walnuts is about 7 g, since 1 cup is 16 tablespoons and 117 g per cup divided by 16 is 7 g.

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