Calories in Mushroom, king oyster
Generic food Vegetables
Mushroom, king oyster contains 38 kcal per 100 g. A typical serving of reference amount, racc (85 g) provides about 33 kcal.
Roughly 73% of its calories come from carbohydrates, with 21% from protein and 6% from fat (estimated with general energy factors).
That is close to the median for vegetables and vegetable products on FoodFactly (35 kcal per 100 g).
100 g provides 40% of the Daily Value for Niacin (B3), 36% of the Daily Value for Biotin (B7) and 19% of the Daily Value for Riboflavin (B2).
The data comes from USDA FoodData Central: Foundation Foods, where most core values were measured by laboratory analysis.
Nutrition facts
| Nutrient | Amount per 100 g | % DV |
|---|---|---|
| Calories C | 38.5 kcal | |
| Total fat M | 0.31 g | 0.4% |
| Saturated fat | not reported | |
| Sodium M | 0.77 mg | 0% |
| Total carbohydrates C | 8.5 g | 3% |
| Dietary fiber M | 3 g | 11% |
| Total sugars | not reported | |
| Protein C | 2.4 g | 5% |
| Vitamin D C | 0.07 µg | 0.4% |
| Thiamin (B1) M | 0.006 mg | 0.5% |
| Riboflavin (B2) M | 0.24 mg | 19% |
| Niacin (B3) M | 6.5 mg | 40% |
| Vitamin B6 M | 0.12 mg | 7% |
| Biotin (B7) M | 10.8 µg | 36% |
| Calcium M | 0 mg | 0% |
| Iron M | 0.34 mg | 2% |
| Magnesium M | 13.5 mg | 3% |
| Phosphorus M | 89.9 mg | 7% |
| Potassium M | 295 mg | 6% |
| Zinc M | 0.63 mg | 6% |
| Copper M | 0.047 mg | 5% |
| Manganese M | 0.091 mg | 4% |
| Selenium M | 1.2 µg | 2% |
% DV: percent of the FDA Daily Value for adults (reference amounts). Letters show how each value was obtained: M measured, C calculated, L label, Z assumed zero, I imputed. Vitamins and minerals not listed were not reported by the source.
Nutritional breakdown
- Protein 21%
- Carbohydrates 73%
- Fat 6%
Approximate share of calories, using general energy factors (4 kcal/g protein and carbohydrate, 9 kcal/g fat, 7 kcal/g alcohol).
Vitamins and minerals, % Daily Value per 100 g
Nutritional insights
- Protein2.4 gabove the median for vegetables and vegetable products (median 2 g)
- Fiber3 gabove the median for vegetables and vegetable products (median 2.2 g)
- Fat0.31 gabove the median for vegetables and vegetable products (median 0.3 g)
- Sodium0.77 mgin the lowest quarter of vegetables and vegetable products (median 36 mg)
- Protein per 100 kcal6.3 gprotein density, useful for comparing foods with different calorie levels
- Water88.1 gwater per 100 g, which largely explains differences between raw, cooked and dried forms
Full nutrient profile
Amino acids (9)
| Tryptophan M | 0.32 g |
|---|---|
| Threonine M | 0.85 g |
| Isoleucine M | 0.76 g |
| Leucine M | 1.2 g |
| Lysine M | 1.2 g |
| Methionine M | 0.3 g |
| Phenylalanine M | 0.74 g |
| Valine M | 1.3 g |
| Histidine M | 0.42 g |
Carotenoids (2)
| Vitamin D (D2 + D3), International Units C | 2.8 IU |
|---|---|
| Vitamin D2 (ergocalciferol) M | 0.07 µg |
Sterols (6)
| Ergosterol M | 49 mg |
|---|---|
| Stigmasterol M | 0 mg |
| Campesterol M | 0 mg |
| Beta-sitosterol M | 0 mg |
| Beta-sitostanol M | 0 mg |
| Delta-5-avenasterol M | 0 mg |
Other components (11)
| Water M | 88.1 g |
|---|---|
| Nitrogen M | 0.39 g |
| Ash M | 0.66 g |
| Delta-7-Stigmastenol M | 0 mg |
| Ergothioneine M | 23.6 mg |
| Beta-glucan M | 2 g |
| Vitamin D4 M | 0.025 µg |
| Ergosta-7-enol M | 1.1 mg |
| Ergosta-7,22-dienol M | 0.8 mg |
| Ergosta-5,7-dienol M | 4.6 mg |
| Glutathione M | 15.7 mg |
Other forms of Mushroom
Raw, cooked, dried and processed versions are separate records with their own measured values.
| Food | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|
| Mushroom, white, exposed to ultraviolet light, raw Raw | 22 | 3.1 g | 3.3 g | 0.34 g |
| Mushroom, lion's mane | 35 | 2.5 g | 7.6 g | 0.26 g |
| Mushroom, oyster | 33 | 2.9 g | 6.9 g | 0.19 g |
| Mushroom, portabella | 26 | 2.8 g | 4.7 g | 0.31 g |
| Mushroom, enoki | 37 | 2.4 g | 8.1 g | 0.25 g |
| Mushroom, crimini | 24 | 3.1 g | 4 g | 0.2 g |
| Mushroom, maitake | 31 | 2.2 g | 6.6 g | 0.27 g |
| Mushroom, beech | 33 | 2.2 g | 6.8 g | 0.45 g |
| Mushroom, pioppini | 31 | 3.5 g | 5.8 g | 0.24 g |
| Mushroom, Asian, cooked, from dried Cooked | 44 | 2.4 g | 8.2 g | 0.2 g |
Per 100 g. Calories in kcal. n/a: not reported by the source.
Foods with a similar nutritional profile
| Food | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|
| Mushrooms, shiitake | 36 | 2.4 g | 8.2 g | 0.2 g |
| Cabbage, mustard, salted | 28 | 1.1 g | 5.6 g | 0.1 g |
| Seaweed, Canadian Cultivated EMI-TSUNOMATA, rehydrated | 31 | 1.9 g | 5.6 g | 0.17 g |
| Ginger root, pickled | 20 | 0.33 g | 4.8 g | 0.1 g |
| Peppers, hot, pickled | 22 | 0.8 g | 4.6 g | 0.4 g |
| Mushrooms, white button | 25 | 2.9 g | 4.1 g | 0.37 g |
| Stew, vegetable | 47 | 1.4 g | 10.1 g | 0.24 g |
| Radishes, hawaiian style, pickled | 28 | 1.1 g | 5.2 g | 0.3 g |
Per 100 g. Calories in kcal. n/a: not reported by the source.
Frequently asked questions
How many calories are in mushroom?
100 g of mushroom has 38 kcal. Reference amount, racc (85 g): about 33 kcal.
How much protein is in mushroom?
Mushroom contains 2.4 g of protein per 100 g (5% of the 50 g Daily Value), or 2 g in reference amount, racc (85 g). About 21% of its calories come from protein. Compared with other vegetables and vegetable products, that is above the median (median 2 g).
How many carbs are in mushroom?
Mushroom has 8.5 g of total carbohydrates per 100 g, including 3 g of fiber.
How much fat is in mushroom?
Mushroom contains 0.31 g of fat per 100 g.
What vitamins and minerals does mushroom contain?
Per 100 g, the most notable amounts relative to the Daily Value are Niacin (B3) (40% DV), Biotin (B7) (36% DV) and Riboflavin (B2) (19% DV). The full list is in the vitamins and minerals table above.
How much sodium is in mushroom?
100 g contains 0.77 mg of sodium, 0% of the 2,300 mg Daily Value.
Does mushroom have the same nutrition not specified and raw?
No. Per 100 g, mushroom, king oyster has 38 kcal, while mushroom, white, exposed to ultraviolet light, raw has 22 kcal. Processing changes the water content, so always use the record that matches how you weigh the food.
Where does this nutrition data come from?
From USDA FoodData Central: Foundation Foods, record dated October 28, 2021. FoodFactly last checked it on November 6, 2026. Each value above shows whether it was measured, calculated or taken from a label.
Source of the nutrition information
- USDA FoodData Central: Foundation Foods, record 2003599. License: CC0 1.0 (U.S. public domain). Source record dated October 28, 2021. Imported November 6, 2026.
Last updated: . Data quality score: 90/100 (how it is calculated).
General nutrition information, not medical advice. Individual needs differ; see our disclaimer.