A typical serving of nectarine (1 medium, 142 g) has about 62 calories. Per 100 g: 44 kcal, 1.1 g protein, 10.6 g carbs, 0.3 g fat. The same 100 g carries 1.7 g of fiber and 7.9 g of sugar. Most of the energy comes from carbohydrate.
| Serving | Weight | Calories |
|---|---|---|
| 1 medium | 142 g | 62 kcal |
| 1 large | 156 g | 69 kcal |
| 1 small | 129 g | 57 kcal |
| 1 cup slices | 143 g | 63 kcal |
| 100 g | 100 g | 44 kcal |
A peach without the fuzz, and the calorie count is nearly identical. On the energy-density scale, 44 kcal per 100 g puts nectarine at the very low end.

A typical serving (1 medium, 142 g) has about 62 calories, and 100 g has 44 kcal. Calories scale with weight, so double the portion means double the number.
There are 1.1 g of protein in 100 g of nectarine, which works out to about 1.6 g per serving (1 medium). Treat it as an energy source rather than a protein source.
There are 10.6 g of carbohydrate per 100 g of nectarine, or about 15 g in 1 medium (142 g).
Every value on this page comes from USDA FoodData Central, entry 169914 (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 169914 (SR Legacy). Serving calories are computed from the per-100-g values.