Ingredient Weight Converter · nut
Walnut Halves: cups to grams
1 cup of walnut halves weighs 100 grams. Use the converter below for any other amount, or check the quick-reference table.
By Andrew Flores, Editor and publisher, Nathan Management. Last reviewed .
Density source: USDA FoodData Central, cross-checked against the King Arthur Baking weight chart. How these figures are derived and corrected is documented in our editorial standards.
Walnut Halves baseline: 1 cup = 100 g.
Common amounts
| Cups | Tablespoons | Grams | Ounces (weight) | Milliliters |
|---|---|---|---|---|
| 1/4 cup | 4.0 | 25 g | 0.88 oz | 59 mL |
| 1/3 cup | 5.3 | 33 g | 1.17 oz | 79 mL |
| 1/2 cup | 8.0 | 50 g | 1.76 oz | 118 mL |
| 2/3 cup | 10.7 | 67 g | 2.35 oz | 158 mL |
| 3/4 cup | 12.0 | 75 g | 2.65 oz | 177 mL |
| 1 cup | 16.0 | 100 g | 3.53 oz | 237 mL |
| 1.5 cups | 24.0 | 150 g | 5.29 oz | 355 mL |
| 2 cups | 32.0 | 200 g | 7.05 oz | 473 mL |
| 3 cups | 48.0 | 300 g | 10.58 oz | 710 mL |
| 4 cups | 64.0 | 400 g | 14.11 oz | 946 mL |
Spoon weights
Derived from the same 100 g per cup — a US tablespoon is 1/16 of a cup and a teaspoon is 1/48.
| Amount | Grams |
|---|---|
| 1 tablespoon | 6.3 g |
| 1 teaspoon | 2.1 g |
| 1/2 teaspoon | 1.0 g |
| 1/4 teaspoon | 0.52 g |
Walnut Halves at a glance
- Bitterness
- The papery skin holds tannins. Toasting mellows them; rubbing toasted walnuts in a towel removes more
- Fat
- about 65% — the highest of the common baking nuts, and the reason they go rancid fastest
- 1 lb bag
- about 4 1/2 cups of halves (454 g ÷ 100 g)
What a cup of walnut halves actually weighs
The published 100 g assumes one specific way of filling the cup. Here is what the same cup weighs under the other common handling methods and product forms, and how far off the recipe you end up.
| How it was measured | Grams per cup | vs. published | Why |
|---|---|---|---|
| Walnut halves | 100 g | published figure | The published figure. Halves are curved and hollow, so they stack with a lot of air. |
| Coarsely chopped | ~110 g | +10% | Smaller pieces settle into each other's gaps. |
| Finely chopped | ~115 g | +15% | About 15% more nut in the same cup than halves — which is why 'chopped walnuts' means chop first, then measure. |
A tilde (~) marks a working estimate rather than a published figure — it varies with brand, grind, or how hard the cup was packed.
Why measuring walnut halves by cup goes wrong
Walnut halves weigh about 100 grams per cup. Chopped walnuts pack tighter — a cup of finely chopped weighs closer to 115 g — because small pieces fill the gaps that halves leave. The same rule applies to every tree nut: the smaller the pieces, the heavier the cup.
Practical tips for working with walnut halves
Chop walnuts before you measure them if the recipe says 'chopped walnuts.' Measuring halves and then chopping changes the actual quantity by about 15 percent. Toast chopped walnuts at 350 °F for 6 minutes; they go from raw-tasting and faintly tannic to warm, deeply nutty, and lightly crisp. Cool them completely before folding into batter or they will melt the butter.
Note from this ingredient's record: Halves and pieces. Chopping them drops volume by about 15 percent — chop first, then measure if you want consistency.
Substitutions that work — and what they cost you
Pecans for walnuts
Ratio: 1:1 by weight or volume
Trade-off: Nearly identical density (99 vs 100 g/cup). Pecans are sweeter and less tannic — usually an improvement in a sweet bake.
Toasted for raw walnuts
Ratio: 1:1
Trade-off: Toasting drives off a little moisture and a lot of the tannic edge. Always cool before adding to a batter.
When walnut halves ruins the recipe
| What you see | What went wrong | What to do |
|---|---|---|
| The cake tastes faintly bitter around the nuts | Untoasted walnut skins releasing tannins into the crumb. | Toast at 350 °F for 6 minutes and rub the cooled nuts in a clean towel to shed loose skin. |
| Nuts sank to the bottom of the loaf | Heavy pieces in a thin batter. | Toss the chopped nuts in a tablespoon of the recipe's flour before folding them in. |
Storing walnut halves
Freezer. Walnuts are the fastest of the common nuts to go rancid — a few months at room temperature is enough to ruin them, while frozen they hold a year.
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