1 cup of walnuts (chopped) in grams — 117 g.

Why 117 g per cup

Chopped walnuts at 117 g/cup; whole halves are slightly less dense (~100 g/cup) because of the larger air gaps between pieces.

Bulky or chunky ingredients — chocolate chips, raisins, chopped nuts — have wildly variable densities depending on piece size and how settled the cup is. Treat these gram figures as approximate; differences of ±15 % are normal and rarely consequential in recipes that use these as additions rather than structural ingredients.

The most accurate way to measure walnuts (chopped)

For recipes where the outcome matters — bakes, doughs, anything leavened — measure walnuts (chopped) on a kitchen scale set to grams. Set the bowl on the scale, press tare to zero, then add until the readout matches the gram value the recipe calls for. This removes the largest source of cup-to-cup variation: how you scoop.

The cup-based numbers on this page assume the “spoon and level” method — fluffing the ingredient in its container, spooning it into the cup, and levelling the top with a straight edge. Scooping directly with the cup packs more in, and can push the gram value up by 20-30 % for fluffy ingredients like flour and cocoa.