Mushrooms calories & macros
22 calories per 100 g · 15 calories per 1 cup sliced (70 g). Mushrooms (white, raw).
Mushrooms are unusual among low-calorie foods in that a meaningful share of their calories comes from protein — 3.1 g per 100 g at just 22 calories. That savoury depth comes from glutamates, which is why they work as a partial meat replacement in sauces and burgers. Like onions, they soak up oil readily, so pan technique matters more than the mushrooms themselves.
Full nutrition facts
| Nutrient | Per 100 g | Per 1 cup sliced (70 g) |
|---|---|---|
| Calories | 22 | 15 |
| Protein | 3.1 g | 2.2 g |
| Carbohydrate | 3.3 g | 2.3 g |
| Fat | 0.3 g | 0.2 g |
| Fiber | 1 g | 0.7 g |
| Sugar | 2 g | 1.4 g |
Source: USDA FoodData Central (Mushrooms, white, raw). Values are for the edible portion and vary with variety, ripeness, and preparation.
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Frequently asked
How many calories in a cup of mushrooms?
A cup of sliced raw white mushrooms (70 g) is about 15 calories. Sautéed in a tablespoon of oil, the same cup is closer to 135.
Do mushrooms count as a source of protein?
They contribute a little — about 2 g per cup — but they are not a protein food in the way meat, fish, or legumes are. Treat the protein as a bonus on top of a very low calorie cost.