Mushroom, portabella
Portion converter
Nutrition data is published per 100 g. Pick a portion to see what it works out to.
No measured portion sizes are published for this food — enter grams directly.
| Nutrient | Per 100 g | In this amount |
|---|---|---|
| Energy (Atwater General Factors)(chosen energy value) | 32 kcal | 32 kcal |
| Water | 91.5 g | 91.5 g |
| Energy (Atwater Specific Factors) | 26 kcal | 26 kcal |
| Nitrogen | 0.44 g | 0.44 g |
| Protein | 2.75 g | 2.75 g |
| Total lipid (fat) | 0.31 g | 0.31 g |
| Ash | 0.80 g | 0.80 g |
| Carbohydrate, by difference | 4.66 g | 4.66 g |
| Fiber, total dietary | 1.88 g | 1.88 g |
| Beta-glucan | 1.15 g | 1.15 g |
| Calcium, Ca | 3.23 mg | 3.23 mg |
| Iron, Fe | 0.14 mg | 0.14 mg |
| Magnesium, Mg | 9.04 mg | 9.04 mg |
| Phosphorus, P | 87.5 mg | 87.5 mg |
| Potassium, K | 349.3 mg | 349.3 mg |
| Sodium, Na | 5.31 mg | 5.31 mg |
Estimates. Portion weights are the published averages for this food. A cup of chopped carrot and a cup of sliced carrot do not weigh the same, so treat the result as approximate.
About zeros. A value of 0 may mean the nutrient is genuinely absent, or that it was not measured / was below the limit of detection. USDA does not distinguish between the two, so this site does not use 0 values for filtering or for "free from" claims.
This converter does not use zero values to claim a food is free of anything, and it is not dietary or medical advice.
Nutrition per 100 g
50 nutrients reported for this food. "Samples" is the number of analytical samples the value is based on.
| Nutrient | Per 100 g | Samples |
|---|---|---|
| Energy (Atwater General Factors)(chosen energy value) | 32 kcal | — |
| Water | 91.5 g | 6 |
| Energy (Atwater Specific Factors) | 26 kcal | — |
| Nitrogen | 0.44 g | 6 |
| Protein | 2.75 g | — |
| Total lipid (fat) | 0.31 g | 6 |
| Ash | 0.80 g | 6 |
| Carbohydrate, by difference | 4.66 g | — |
| Fiber, total dietary | 1.88 g | 6 |
| Beta-glucan | 1.15 g | 6 |
| Calcium, Ca | 3.23 mg | 6 |
| Iron, Fe | 0.14 mg | 6 |
| Magnesium, Mg | 9.04 mg | 6 |
| Phosphorus, P | 87.5 mg | 6 |
| Potassium, K | 349.3 mg | 6 |
| Sodium, Na | 5.31 mg | 6 |
| Zinc, Zn | 0.39 mg | 6 |
| Copper, Cu | 0.20 mg | 6 |
| Manganese, Mn | 0.05 mg | 6 |
| Selenium, Se | 14.7 µg | 6 |
| Thiamin | 0.01 mg | 6 |
| Riboflavin | 0.47 mg | 6 |
| Niacin | 3.90 mg | 6 |
| Vitamin B-6 | 0.10 mg | 6 |
| Biotin | 11.1 µg | 6 |
| Vitamin D (D2 + D3), International Units | 0 IU | — |
| Vitamin D (D2 + D3) | 0 µg | — |
| Vitamin D2 (ergocalciferol) | 0 µg | 6 |
| Vitamin D4 | 0 µg | 6 |
| Stigmasterol | 0 mg | 6 |
| Campesterol | 0 mg | 6 |
| Beta-sitosterol | 0 mg | 6 |
| Ergosta-7-enol | 1.76 mg | 6 |
| Ergosta-5,7-dienol | 4.68 mg | 6 |
| Ergosta-7,22-dienol | 1.82 mg | 6 |
| Ergosterol | 48.9 mg | 6 |
| Beta-sitostanol | 0 mg | 6 |
| Delta-5-avenasterol | 0 mg | 6 |
| Delta-7-Stigmastenol | 0 mg | 6 |
| Ergothioneine | 2.33 mg | 6 |
| Tryptophan | 0.41 g | 6 |
| Threonine | 1.21 g | 6 |
| Isoleucine | 1.01 g | 6 |
| Leucine | 1.63 g | 6 |
| Lysine | 1.46 g | 6 |
| Methionine | 0.35 g | 6 |
| Phenylalanine | 1.02 g | 6 |
| Valine | 2.16 g | 6 |
| Histidine | 0.56 g | 6 |
Why there is only one energy value here
USDA publishes three different energy nutrients (IDs 1008, 2047, 2048) plus a kilojoule value. This page uses 2047 — Energy (Atwater General Factors) — falling back to the others only when it is absent. Sites that mix them can report different calorie counts for the same food.
Allergens: do not rely on this page
This dataset has no structured allergen field, and reference values describe a generic food — not the product you are holding. Always read the actual label before eating anything.
If you have a food allergy, treat this page as background information only.
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Source: U.S. Department of Agriculture, Agricultural Research Service. FoodData Central, 2019. fdc.nal.usda.gov. (Foundation Foods, release 2026-04-30) — https://fdc.nal.usda.gov/ · Data last updated 2026-09-27