Vegetable

White mushrooms (raw) Nutrition Facts

USDA description: Mushrooms, white, raw

Per 100 g, White mushrooms (raw) provides 22 calories. A typical portion, 1 medium (18 g), has 4 calories, 0.6 g protein, 0.6 g carbs and 0.1 g fat.

calories: 22
protein: 3.1 g
carbs: 3.3 g
fat: 0.3 g

Per 100 g.

Calories and macros per serving

Serving weights are USDA's own for this record; each value is the per-100 g amount scaled to that weight. % = share of the FDA Daily Value.

White mushrooms (raw): calories, protein, carbs, fat, fiber and sugars per serving
Serving	Calories	Protein	Carbs	Fat	Fiber	Sugars
100 g	221%	3.1 g6%	3.3 g1%	0.3 g<1%	1 g4%	2 g
1 cup, pieces or slices70 g	151%	2.2 g4%	2.3 g1%	0.2 g<1%	0.7 g3%	1.4 g
1 cup, whole96 g	211%	3 g6%	3.1 g1%	0.3 g<1%	1 g3%	1.9 g
1 large23 g	5<1%	0.7 g1%	0.7 g<1%	0.1 g<1%	0.2 g1%	0.5 g
1 medium18 g	4<1%	0.6 g1%	0.6 g<1%	0.1 g<1%	0.2 g1%	0.4 g
1 slice6 g	1<1%	0.2 g<1%	0.2 g<1%	0 g<1%	0.1 g<1%	0.1 g
1 small10 g	2<1%	0.3 g1%	0.3 g<1%	0 g<1%	0.1 g<1%	0.2 g
1/2 cup pieces35 g	8<1%	1.1 g2%	1.1 g<1%	0.1 g<1%	0.4 g1%	0.7 g

Calories in kcal. n/r = not reported for this food.

Raw, cooked and other forms

Cooking changes water content, so values per 100 g shift. Each row is its own USDA record.

Form (per 100 g)	Calories	Protein	Carbs	Fat
White mushrooms (raw) (this page)	22	3.1 g	3.3 g	0.3 g
White mushrooms (cooked, boiled, drained, with salt)	28	2.2 g	5.3 g	0.5 g
White mushrooms (cooked, boiled, drained, without salt)	28	2.2 g	5.3 g	0.5 g
White mushrooms (microwaved)	35	3.9 g	6 g	0.5 g

How White mushrooms ranks among vegetables

Rank 1 = the most of that nutrient among the vegetables on CalorieExplorer. Per 200 kcal shows nutrient density: how much you get for the same calories.

Nutrient	Per 100 g	Per 200 kcal
Protein	3.1 g#29 of 126 vegetables	28 g#4 of 126 vegetables
Fiber	1 g#98 of 115 vegetables	9.1 g#75 of 115 vegetables
Potassium	318 mg#38 of 126 vegetables	2,891 mg#13 of 126 vegetables
Calcium	3 mg#119 of 126 vegetables	27 mg#114 of 126 vegetables
Iron	0.5 mg#91 of 126 vegetables	4.5 mg#53 of 126 vegetables
Magnesium	9 mg#115 of 125 vegetables	82 mg#82 of 125 vegetables
Vitamin C	2.1 mg#114 of 123 vegetables	19 mg#99 of 123 vegetables

Macronutrient Breakdown

43%

Protein

46%

Carbs

11%

Fat

Compared with the median of vegetables

Per 100 g; median of the 125 vegetables with a value.

Calories: White mushrooms: 22 kcal
median: 33 kcal
Protein: White mushrooms: 3.1 g
median: 1.8 g
Carbs: White mushrooms: 3.3 g
median: 7.1 g
Fat: White mushrooms: 0.3 g
median: 0.3 g
Fiber: White mushrooms: 1 g
median: 2.3 g

Vitamins and minerals

Nutrient	Per 100 g	%DV	Per 1 medium (18 g)	%DV
Saturated fat	0.1 g	<1%	0 g	<1%
Trans fat	0 g	no DV	0 g	no DV
Cholesterol	0 mg	0%	0 mg	0%
Sodium	5 mg	<1%	0.9 mg	<1%
Vitamin D	0.2 µg	1%	0.04 µg	<1%
Calcium	3 mg	<1%	0.54 mg	<1%
Iron	0.5 mg	3%	0.09 mg	1%
Potassium	318 mg	7%	57 mg	1%
Vitamin A (RAE)	0 µg	0%	0 µg	0%
Vitamin C	2.1 mg	2%	0.38 mg	<1%
Vitamin E	0.01 mg	<1%	0 mg	<1%
Vitamin K	0 µg	0%	0 µg	0%
Thiamin (B1)	0.08 mg	7%	0.01 mg	1%
Riboflavin (B2)	0.4 mg	31%	0.07 mg	6%
Niacin (B3)	3.6 mg	23%	0.65 mg	4%
Vitamin B6	0.1 mg	6%	0.02 mg	1%
Folate (approx.)	17 µg	4%	3.1 µg	1%
Vitamin B12	0.04 µg	2%	0.01 µg	<1%
Phosphorus	86 mg	7%	15 mg	1%
Magnesium	9 mg	2%	1.6 mg	<1%
Zinc	0.52 mg	5%	0.09 mg	1%
Selenium	9.3 µg	17%	1.7 µg	3%
Copper	0.32 mg	35%	0.06 mg	6%
Manganese	0.05 mg	2%	0.01 mg	<1%

Source: U.S. Department of Agriculture, FoodData Central, FDC ID 169251 (SR Legacy, April 2018 final release). Values per 100 g as published in that record, imported 2026-03-13; serving weights from the same record, retrieved 2026-10-13.

% Daily Value: FDA Daily Values (2016 Nutrition Facts label rule, 21 CFR 101.9), adults and children 4+. Ranks compare the foods of the same category on this site. How we calculate.

Last updated 2026-10-13. Values are averages for the food as described; brands, varieties and cooking change them. Not medical advice.