Walnuts Cups to Ounces
Convert any amount of walnuts between cups and ounces. 1 cup of walnuts equals 4.23 oz. Use the calculator for custom amounts, or choose an amount below.
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Common walnuts measurements found in recipes.
Other Units for Walnuts
Convert walnuts from cups to other units. Each link has its own calculator and conversion amounts.
Similar Ingredients
Measuring Tip
Chopped, sliced, and whole walnuts have very different weights per measuring cup. Always match the form specified in your recipe.
Understanding the Units
What is a Cup?
The US cup (236.588 ml) is slightly smaller than the metric cup used in Australia and some other countries (250 ml). When following recipes from different countries, check which cup standard is being used.
What is an Ounce?
An ounce (oz) is a US customary unit of weight equal to 28.3495 grams or 1/16 of a pound. In cooking, "ounces" refers to weight (avoirdupois ounces), not fluid ounces which measure volume.
Frequently Asked Questions
For walnuts, 1 cup equals 4.23 oz. For other amounts, select an amount below or use the calculator for a custom quantity.
The most accurate way is to weigh walnuts on a kitchen scale. If you are measuring by volume, spoon the ingredient into the measuring cup and level it off with a straight edge rather than scooping directly from the container, which packs more in and gives a heavier result.
Close, but not exactly. The cups to ounces conversion for walnuts may vary slightly between brands depending on moisture content and how the ingredient is measured.
Weighing is more consistent than volume measuring. A cup of walnuts can vary by 10-20% depending on how it's scooped, packed, or leveled. Weighing gives the same result every time, which is especially important in baking where precision affects texture and rise.