One-Third Cup of Chopped Walnuts in Grams
1/3 cup of chopped walnuts weighs 40g (1.41 oz, 80ml) according to USDA FoodData Central (1 cup chopped walnuts = 120g, spooned and leveled method). 1/3 cup = 0.3333 of a full cup (240ml). See the full conversion table below for all amounts from 1 tablespoon to 3 cups.
Chopped Walnuts Cup-to-Gram Conversion Table
Full range from 1 tablespoon to 3 cups. The highlighted row shows 1/3 cup.
| Amount | Grams |
|---|---|
| 1 tbsp | 7.5g |
| 2 tbsp | 15g |
| 1/8 cup | 15g |
| 1/4 cup | 30g |
| 1/3 cupthis page | 40g |
| 1/2 cup | 60g |
| 2/3 cup | 80g |
| 3/4 cup | 90g |
| 1 cup | 120g |
| 1 1/4 cups | 150g |
| 1 1/2 cups | 180g |
| 1 3/4 cups | 210g |
| 2 cups | 240g |
| 2 1/2 cups | 300g |
| 3 cups | 360g |
Source: USDA FoodData Central (FDC ID: 12155). 1 US cup = 240ml. Values use spooned-and-leveled method.
1/3 Cup of Different Ingredients — Weight Comparison
1/3 cup of different ingredients varies widely in weight because each has a different density. This matters when substituting ingredients in recipes.
| Ingredient | 1/3 Cup (g) |
|---|---|
| Chopped Pecans | 36.33g |
| Chopped Walnutscurrent | 40g |
| Cashews (whole) | 43.33g |
| Pine Nuts | 45g |
| Peanut Butter | 86g |
All values use USDA FoodData Central spooned-and-leveled method. Click any ingredient to see its full conversion table.
Measuring Chopped Walnuts Accurately
Why weight matters: 1/3 cup of chopped walnuts can weigh anywhere from 34g to 48g depending on how you measure it. The USDA standard is 40g (spooned and leveled). Scooping directly from the container can add 10–20% extra weight, which affects recipe results — especially in baking.
About chopped walnuts density: Chopped walnuts: 1 cup = 120g. Coarsely chopped vs finely chopped can vary by 10-15g/cup. Whole walnut halves: 1 cup = 100g (more air pockets). Toasted walnuts weigh slightly less per cup (moisture lost).
About 1/3 Cup as a Measurement
1/3 cup = 5 tablespoons + 1 teaspoon = 80ml. This unusual fraction appears in recipes that scale for 2 servings from a 3-serving base. It cannot be made from combining standard 1/4 and 1/8 cup measures without error.
One-third cup is common in yogurt parfait recipes, small-batch granola bars, and single-layer cake recipes scaled for 2 servings. It is exactly 80ml in metric volume.
Frequently Asked Questions
How many grams is 1/3 cup of chopped walnuts?
1/3 cup of chopped walnuts weighs 40 grams (1.41 oz, 80ml). Based on USDA FoodData Central: 1 cup chopped walnuts = 120g, so 1/3 cup = 120 × 0.333 = 40g.
Is 1/3 cup of chopped walnuts the same weight every time?
The weight can vary slightly depending on measuring technique. Spooned and leveled gives 40g. Scooped (packed) can be 10–20% heavier. Sifted gives a lighter weight. The USDA standard (spooned and leveled) of 40g is the most reliable baseline for recipes.
How do I accurately measure 1/3 cup of chopped walnuts?
For accuracy, use a kitchen scale and weigh 40g of chopped walnuts. If using measuring cups, spoon the chopped walnuts lightly into a 1/3 Cup measuring cup and level off the top with a straight edge. Avoid scooping directly from the container, which compacts the ingredient and adds extra weight.
How does 1/3 cup of chopped walnuts compare to other ingredients?
1/3 cup of different ingredients varies significantly: Chopped Pecans = 36.33g, Chopped Walnuts = 40g, Cashews (whole) = 43.33g. This is because each ingredient has a different density.