How much potassium is in walnuts?

125 milligrams of potassium in 1 ounce (14 halves)

Potassium in other portions of walnuts
PortionPotassium
1 cup, chopped516 milligrams of potassium in 1 cup, chopped
1 cup, ground353 milligrams of potassium in 1 cup, ground
1 cup, in shell, edible yield (7 nuts)123 milligrams of potassium in 1 cup, in shell, edible yield (7 nuts)
1 cup shelled (50 halves)441 milligrams of potassium in 1 cup shelled (50 halves)
1 cup pieces or chips529 milligrams of potassium in 1 cup pieces or chips
100 g441 milligrams of potassium in 100 g

See everything in a serving of Walnuts

Where these numbers come from

USDA FoodData Central, SR Legacy, record 170187. The source describes it as: Nuts, walnuts, english.

U.S. Department of Agriculture, Agricultural Research Service, Beltsville Human Nutrition Research Center. FoodData Central. [Internet]. [cited 11 October 2026]. Available from https://fdc.nal.usda.gov/. Releases used: Foundation Foods, April 2026; SR Legacy, April 2018; Survey Foods (FNDDS 2021-2023), October 2024.

Data built on 11 October 2026 (data-2026-10-11).

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