Nutrition referenceButton mushrooms are small, white edible mushrooms with a mild flavor. Per 100 g they provide about 31 calories with 4.1 g carbs and 2.9 g protein.
Nutrition facts
1750347 · Foundation Foods, April 2021 (2021-04-28 export)
169251 · SR Legacy, final April 2018 release
1999629 · Foundation Foods, April 2026 (2026-04-30 export)
About this food
Button mushrooms are the young form of the common white mushroom (Agaricus bisporus). They have a mild, earthy flavor and are widely used in salads, soups, stir-fries, and sauces.
Nutritionally, button mushrooms are low in calories and fat. Per 100 g they provide about 31 kcal, 4.1 g of carbohydrates, 2.9 g of protein, and 0.4 g of fat.
Button mushrooms can be eaten raw or cooked. For accurate tracking, weigh the mushrooms and use the serving sizes below.
Plan your portion
Nutrition values are reported per 100 g. A typical cup of sliced button mushrooms (about 70 g) provides roughly 22 kcal. Use the serving sizes below to estimate portions when logging.
| Serving | Weight | Calories | Carbs | Protein | Fat |
|---|---|---|---|---|---|
| 100 g | 100 g | 31.2 kcal | 4.1 g | 2.9 g | 0.4 g |
| 1 cup sliced | 70 g | 21.8 kcal | 2.9 g | 2 g | 0.3 g |
| 1/2 cup sliced | 35 g | 10.9 kcal | 1.4 g | 1 g | 0.1 g |
Use the weight of the edible portion in the food state shown above.
Questions and answers
Button mushrooms provide about 31 calories per 100 g.
Yes. Button mushrooms provide only about 31 calories and 0.4 g of fat per 100 g.
Button mushrooms provide about 2.9 g of protein per 100 g.
