Calories in Walnuts
100 g of Walnuts has about 654 calories. At the reference weight of 28 g, that is about 183 calories. Enter the amount you actually eat to calculate your portion.
Calories per 100 g
654 kcal
calories per 100 g
- Protein
- 15 g
- Fat
- 65 g
- Carbs
- 14 g
These are reference values. Ingredients and preparation can change the result.
Macros in WalnutsCalculate calories for your portion
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In your portion
183 kcal
- Protein
- 4.2 g
- Fat
- 18.2 g
- Carbs
- 3.9 g
How to calculate calories in Walnuts
Multiply the calories per 100 g by your portion weight, then divide by 100. For the reference 28 g portion, the calculation is:
654 × 28 ÷ 100 ≈ 183 kcal
Reference portion: handful (28 g). This is an example amount, not a recommended portion. Weigh your food when possible: a cup, slice or piece can vary in size.
Check that the entry matches the food you have, including its preparation. If raw or cooked is not specified, check your label or a matching nutrition reference before logging it.
Calories by portion size
| Portion | Calories | Protein | Fat | Carbs |
|---|---|---|---|---|
| 28 g | 183 kcal | 4.2 g | 18.2 g | 3.9 g |
| 50 g | 327 kcal | 7.5 g | 32.5 g | 7 g |
| 100 g | 654 kcal | 15 g | 65 g | 14 g |
| 200 g | 1,308 kcal | 30 g | 130 g | 28 g |
Additional nutrients · 100 g
- Fiber
- 6.2 g
- Sugars
- 2.6 g
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How FoodWarz works →What changes the calories?
Oil, sauces, sugar, toppings, cooking method and portion weight can change walnuts calories quickly.
FAQ
How many calories are in a 28 g portion of Walnuts?
Using this reference entry, 28 g has about 183 calories. The calculator scales the per-100 g value; it does not identify your recipe or brand.
Can I use the same number for any cup, slice or piece?
No. Household measures and individual pieces can have different weights. Use the gram weight of the edible portion, or the serving weight printed on your package.
Is walnuts good for calorie tracking?
Yes, as long as you track portion size. The biggest source of error is usually weight, sauces, oil and mixed ingredients.
How Walnuts compares
No other food in this table has more calories per 100 g than Walnuts.
| Food | Calories | Protein | Fat | Carbs |
|---|---|---|---|---|
| Walnuts (this page)Most calories | 654 kcal | 15 g | 65 g | 14 g |
| Cashews | 553 kcal | 18 g | 44 g | 30 g |
| Peanuts | 567 kcal | 26 g | 49 g | 16 g |
| Pistachios | 560 kcal | 20 g | 45 g | 28 g |
| Hazelnuts | 628 kcal | 15 g | 61 g | 17 g |
| Chia seedsFewest calories | 486 kcal | 17 g | 31 g | 42 g |
| Flaxseeds | 534 kcal | 18 g | 42 g | 29 g |
Data sources
Reference values are compiled from USDA FoodData Central, Open Food Facts and curated food databases. Your actual portion may differ by recipe, brand and cooking method.
Nutrition data methodologyNutrition values are estimates for calorie tracking and may vary by recipe, brand, cooking method and portion size. Not medical advice.
Last updated: October 3, 2026