grams in a cup
nuts

Walnuts:
Grams to Cups

120 g per cup
60 g per ½ cup
30 g per ¼ cup

By Stefan Ulrich · Last updated

Chopped walnuts weigh 120 grams per cup — a convenient number that happens to match all-purpose flour. But walnut measurement is highly sensitive to whether the nuts are whole, halved, or chopped, so most recipes specify the preparation state.

Grams at a glance — Walnuts
How much Walnuts weighs at each cup measure: ¼ cup 30 g, ⅓ cup 40 g, ½ cup 60 g, ¾ cup 90 g, 1 cup 120 g ¼ 30 g ⅓ 40 g ½ 60 g ¾ 90 g 1 120 g

How much Walnuts weighs at each cup measure.

Convert Walnuts

1 cup = 120 grams

cups

= — grams

g

= — cups

Quick reference

Measurement Table

Cups Grams Ounces
1 tsp 3 g 0.11 oz
1 tbsp 8 g 0.28 oz
⅛ cup 15 g 0.53 oz
¼ cup 30 g 1.06 oz
⅓ cup 40 g 1.41 oz
½ cup 60 g 2.12 oz
⅔ cup 80 g 2.82 oz
¾ cup 90 g 3.17 oz
1 cup 120 g 4.23 oz
1¼ cups 150 g 5.29 oz
1½ cups 180 g 6.35 oz
2 cups 240 g 8.47 oz
3 cups 360 g 12.70 oz

About Walnuts

The walnut cup measurement varies significantly by preparation: whole walnut halves pack loosely at approximately 100 g/cup, while finely chopped walnuts approach 130–135 g/cup. 'Roughly chopped' falls near the 120 g standard. This is why recipes that care about precision call for 'chopped walnuts' specifically.

For baking, most banana bread, brownie, and muffin recipes use roughly chopped walnuts at the 120 g/cup standard. If you prefer a stronger walnut presence, use the larger end (130 g); for background crunch, use 100–110 g.

Toasting walnuts before using them in baked goods intensifies their flavor dramatically and eliminates any bitterness from the skin. Spread them in a single layer at 350°F (175°C) for 8–10 minutes, watching carefully — the oils in walnuts make them prone to burning. Toasted weight is approximately equal to raw weight (moisture loss is negligible at this temperature).

Walnuts stored at room temperature go rancid within 2–3 months due to their high omega-3 fat content. Store in the freezer for up to a year.

Tips for measuring Walnuts

  • Halves: ~100 g/cup. Roughly chopped: ~120 g/cup. Finely chopped: ~130 g/cup.
  • Toast at 350°F/175°C for 8–10 min to deepen flavor and reduce bitterness.
  • Freeze for long-term storage — rancidity is the main failure mode.
  • When measuring for fruit/nut bread, a 10–15 g variance won't affect the outcome.

Common mistakes

  • Using whole halves when recipe calls for chopped — significantly less by weight
  • Measuring rancid walnuts (bitter, oily smell) — they ruin the finished product

Frequently Asked Questions

How many grams in a cup of Walnuts?
1 cup of Walnuts weighs 120 grams — the standard used in most American recipes. Use the converter above for any other amount.
How many grams is 1 tablespoon of Walnuts?
1 tablespoon of Walnuts weighs about 8 grams. The full table above lists every common cup fraction.
What's the most common mistake when measuring Walnuts?
Using whole halves when recipe calls for chopped — significantly less by weight. Weighing on a kitchen scale avoids it entirely.
Does chopping change how much Walnuts fits in a cup?
Yes — finely chopped walnuts packs denser than whole or halved pieces, so weigh when precision matters.

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All-Purpose Flour

1 cup = 120 g

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1 cup = 220 g

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1 cup = 120 g

Dried Cranberries

1 cup = 120 g

Pecans

1 cup = 109 g

Sunflower Seeds (Shelled)

1 cup = 140 g

Hazelnuts (Whole)

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Macadamia Nuts (Whole)

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Peanuts (Whole)

1 cup = 145 g