Calories in Walnuts

183kcal per 1 oz (about 14 halves) (28 g)

654 kcal per 100 g · about 9% of a 2,000-kcal day

Walnuts are the most calorie-dense common nut, but most of that fat is omega-3 ALA — a nutritional profile no other nut matches.

Walnuts nutrition facts

NutrientPer 100 gPer 1 oz (about 14 halves)
Calories654 kcal183 kcal
Protein15.2 g4.3 g
Carbs13.7 g3.8 g
Fat65.2 g18.3 g
Fiber6.7 g1.9 g
Sugar2.6 g0.7 g

Where the calories come from

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More legumes & nuts

Values based on USDA FoodData Central reference entries. Actual nutrition varies with variety, preparation, and portion. © 2026 NibbleCal.