Calories in mushrooms

USDA data · Updated October 12, 2026

Mushrooms (1 cup, pieces or slices, 70 g) has 15 calories, with 2.2 g of protein, 2.3 g of carbohydrates and 0.2 g of fat. Per 100 g, that's 22 kcal.

Values are for Mushrooms, white, raw. Amounts vary with size, variety and preparation.

Mushrooms

Per 1 cup, pieces or slices (70 g)


Calories15

Protein2.2 g
Carbohydrates2.3 g
   Fiber0.7 g
   Sugars1.4 g
Fat0.2 g
Sodium4 mg

Source: USDA FoodData Central.

Calories in mushrooms by serving

ServingWeightCaloriesProteinCarbsFat
100 g100 g223.1 g3.3 g0.3 g
1 cup, pieces or slices70 g152.2 g2.3 g0.2 g
1 cup, whole96 g213 g3.1 g0.3 g
1 large23 g50.7 g0.7 g0.1 g
1 medium18 g40.6 g0.6 g0.1 g
1 slice6 g10.2 g0.2 g0 g
1 small10 g20.3 g0.3 g0 g
½ cup pieces35 g81.1 g1.1 g0.1 g
1 oz28 g60.9 g0.9 g0.1 g

Where the calories come from

Protein 43%Carbs 46%Fat 11%

Mushrooms has a very low energy density (0.2 kcal per gram). It provides 14 g of protein per 100 kcal, which makes it a lean protein source.

Vegetables: calories compared

Per 100 gCaloriesProteinCarbsFat
Celery140.7 g3 g0.2 g
Cucumber150.7 g3.6 g0.1 g
Zucchini171.2 g3.1 g0.3 g
Romaine lettuce171.2 g3.3 g0.3 g
Tomato180.9 g3.9 g0.2 g
Asparagus202.2 g3.9 g0.1 g
Mushrooms223.1 g3.3 g0.3 g
Spinach232.9 g3.6 g0.4 g
Cauliflower251.9 g5 g0.3 g
Red bell pepper261 g6 g0.3 g
Green beans311.8 g7 g0.2 g
Broccoli342.8 g6.6 g0.4 g
Onion401.1 g9.3 g0.1 g
Carrots410.9 g9.6 g0.2 g
Green peas785.2 g14.3 g0.3 g
Sweet potato902 g20.7 g0.1 g
Baked potato932.5 g21.1 g0.1 g
Corn on the cob963.4 g21 g1.5 g

Log it in seconds

In C for Calories, photograph your plate and mushrooms is estimated along with everything else on it, or search for it and enter the amount in grams. For packaged versions, scan the barcode to use the label.

Source: U.S. Department of Agriculture, Agricultural Research Service. FoodData Central, SR Legacy, FDC ID 169251. Calories are rounded to the nearest whole number and nutrients to one decimal place.

FAQ

Frequently asked questions

How many calories are in mushrooms?

15 calories in 1 cup, pieces or slices (70 g), or 22 calories per 100 g.

How much protein is in mushrooms?

2.2 g of protein in 1 cup, pieces or slices (70 g) (3.1 g per 100 g).

How many carbs are in mushrooms?

2.3 g of carbohydrates in 1 cup, pieces or slices (70 g), including 0.7 g of fiber.