Walnuts has 654 kcal per 100g, with 15 g protein, 14 g carbohydrates and 65 g fat.
Last updated: October 3, 2026 · Written and fact-checked by the Calorie Cal team.
Walnuts is low in protein: only 9% of its calories come from protein. Most of its calories (83%) come from fat.
Calculated with 4 kcal per gram of protein and carbohydrate and 9 kcal per gram of fat, so the total can differ slightly from the listed calories.
With 65 g of fat per 100 g, walnuts are among the most calorie-dense nuts, and unlike most nuts much of that fat is polyunsaturated, including plant omega-3. They are eaten as a snack, baked into breads and brownies, or chopped over oatmeal and salads. A small measured portion goes a long way, since adding walnuts to a dish raises its calories quickly.
Typical portion: A 28 g handful, about 14 walnut halves, works out to roughly 185 kcal.
Also known as: akhrot, walnut, walnut halves, english walnuts, akhroat
| Serving | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|
| 50 g | 327 kcal | 7.5 g | 7 g | 32.5 g |
| 100 g | 654 kcal | 15 g | 14 g | 65 g |
| 150 g | 981 kcal | 22.5 g | 21 g | 97.5 g |
| 200 g | 1,308 kcal | 30 g | 28 g | 130 g |
| 250 g | 1,635 kcal | 37.5 g | 35 g | 162.5 g |
One serving (100g) is 33% of a 2,000 kcal day and 44% of a 1,500 kcal day. It also gives 15 g of protein, which is 15% of a 100 g daily protein target.
| Food | Serving | Calories | Protein |
|---|---|---|---|
| Walnuts | 100g | 654 kcal | 15 g |
| Almonds | 100g | 579 kcal | 21 g |
| Ground Flaxseed | 100g | 534 kcal | 18 g |
| Chia Seeds | 100g | 486 kcal | 17 g |
| Dark Chocolate | 100g | 598 kcal | 7.8 g |
Walnuts has 654 kcal per 100g. That serving also has 15 g protein, 14 g carbohydrates and 65 g fat.
Walnuts has 15 g of protein per 100g, so 9% of its calories come from protein.
No single food makes you gain or lose weight. Your total calories over the day and week do. Walnuts can fit a weight-loss diet when the portion fits your daily calorie target. At 654 kcal per 100 g it is calorie-dense, so measuring portions helps.
It depends on your age, sex, height, weight and activity level. Most adults need somewhere between 1,600 and 3,000 kcal a day. Use the free calorie calculator to get your personal number.
Nutrition values are typical averages based on USDA FoodData Central and the Indian Food Composition Tables 2017 (ICMR–National Institute of Nutrition), with recipe-based estimates for mixed dishes.
Values are typical averages and vary by recipe, brand and portion size. For packaged foods, check the label. This page is general information, not medical advice.