Mushrooms, white, raw
Last updated 4 Nov 2026
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White mushrooms are edible fungi; the figures here describe raw button and closed-cap mushrooms. They consist mainly of water and provide small amounts of protein and fibre, alongside B vitamins and minerals. Per 100g, they contain 1g of protein, 0.7g of fibre, 378mg of potassium and 0.27mg of riboflavin.
Potassium contributes to normal nerve and muscle function, while riboflavin helps the body release energy from food. Raw white mushrooms contain little fat, saturated fat or salt. Added ingredients, such as butter, oil or salt, will change the nutritional content of a prepared mushroom dish. Full nutritional figures are given in the tables below.
Nutrition per 100g
Nutrient | Per 100g |
|---|---|
Energy | 7 kcal |
Energy | 29 kJ |
Fat | 0.2g |
of which saturates | 0.04g |
Carbohydrate | 0.3g |
of which sugars | 0.3g |
0.7g | |
1g | |
Salt | 0.01g |
Alcohol | 0g |
Water | 93g |
Cholesterol | 0mg |
Vitamins and minerals per 100g
Nutrient | Per 100g |
|---|---|
0µg | |
0µg | |
0.01mg | |
0.28µg | |
1mg | |
0.13mg | |
0.27mg | |
2.5mg | |
0.1mg | |
0µg | |
40µg | |
3mg | |
0.21mg | |
10mg | |
94mg | |
378mg | |
Sodium | 4mg |
0.6mg | |
0.28mg | |
17µg | |
2µg |
Other types of mushrooms
Food | Calories per 100g | Protein per 100g | Fat per 100g | Fibre per 100g |
|---|---|---|---|---|
284 kcal | 10g | 1.8g | – | |
279 kcal | 6.9g | 1g | – | |
29 kcal | 0.7g | 0.7g | – | |
325 kcal | 4.8g | 2g | – | |
76 kcal | 1.1g | 0.2g | – | |
8 kcal | 1.6g | 0.2g | – | |
296 kcal | 9.6g | 1g | – | |
106 kcal | 1.4g | 11g | 1g | |
106 kcal | 1.4g | 11g | 1g | |
106 kcal | 1.4g | 11g | 1g | |
9 kcal | 1.4g | 0.3g | 2.6g | |
55 kcal | 1.6g | 0.2g | – | |
12 kcal | 2.1g | 0.4g | – | |
15 kcal | 2.1g | 0.2g | – |
About these figures
Values are per 100g of the food as described (11 samples, closed cap and button, UK grown and imported, pre-packed and loose). "Trace" means only a very small amount was found. Nutrients that were not measured are not shown. Salt is calculated from sodium.