A typical serving of mushrooms (1 cup, whole, 96 g) has about 21 calories. Per 100 g: 22 kcal, 3.1 g protein, 3.3 g carbs, 0.3 g fat. The same 100 g carries 1 g of fiber and 2 g of sugar. Protein supplies most of that energy.
| Serving | Weight | Calories |
|---|---|---|
| 1 cup, whole | 96 g | 21 kcal |
| 1 medium mushroom | 18 g | 4 kcal |
| 100 g | 100 g | 22 kcal |
Meaty texture at 22 kcal per 100 g, a fraction of what actual meat costs. On the energy-density scale, 22 kcal per 100 g puts mushrooms at the very low end. Protein density is strong: about 14.1 g of protein per 100 calories.
A typical serving (1 cup, whole, 96 g) has about 21 calories, and 100 g has 22 kcal. Calories scale with weight, so double the portion means double the number.
There are 3.1 g of protein in 100 g of mushrooms, which works out to about 3 g per serving (1 cup). Treat it as an energy source rather than a protein source.
There are 3.3 g of carbohydrate per 100 g of mushrooms, or about 3 g in 1 cup (96 g).
Every value on this page comes from USDA FoodData Central, entry 169251 (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 169251 (SR Legacy). Serving calories are computed from the per-100-g values.
