A typical serving of peanuts (1 oz, 28 g) has about 161 calories. Per 100 g: 567 kcal, 25.8 g protein, 16.1 g carbs, 49.2 g fat. The same 100 g carries 8.5 g of fiber and 4.7 g of sugar. Most of the energy comes from fat.
| Serving | Weight | Calories |
|---|---|---|
| 1 oz | 28 g | 161 kcal |
| 1/4 cup | 37 g | 207 kcal |
| 100 g | 100 g | 567 kcal |
Botanically a legume, nutritionally a nut: 567 kcal per 100 g with 26 g of protein. On the energy-density scale, 567 kcal per 100 g puts peanuts at the very high end. Fiber is the standout at 8.5 g per 100 g, which slows a portion down more than the calorie count suggests.
A typical serving (1 oz, 28 g) has about 161 calories, and 100 g has 567 kcal. Calories scale with weight, so double the portion means double the number.
There are 25.8 g of protein in 100 g of peanuts, which works out to about 7.3 g per serving (1 oz). It contributes meaningful protein, though most of the calories come from elsewhere.
Yes, in the plain arithmetic sense: 49.2 g of fat per 100 g supplies about 78% of the calories. Whether that fits your day depends on your totals, not on the food alone.
Every value on this page comes from USDA FoodData Central, entry 172430 (SR Legacy). Serving figures are converted from the per-100-g data, so rounding can shift a total by a calorie or two.
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Get JoulesA note on accuracy: calculators like this one provide estimates based on population-level formulas — your real needs vary with genetics, muscle mass, medical conditions, and more. Results are for information only and are not medical advice, a diagnosis, or a prescription. Talk to a doctor or registered dietitian before making significant changes to your diet or exercise, especially if you have a health condition, are pregnant, or are under 18.
Nutrition data: USDA FoodData Central, FDC ID 172430 (SR Legacy). Serving calories are computed from the per-100-g values.
