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How Many Calories in Mushrooms?
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Quick reference — common serving sizes
| Amount | Calories | Protein |
|---|---|---|
| 1 oz (28g) | 6 kcal | 0.9g |
| 100g | 22 kcal | 3.1g |
| 1 cup sliced | 4 kcal | 0.6g |
A mushrooms contains 22 calories per 100g. A typical 1 cup sliced (18g) provides about 4 calories. Mushrooms is low in calories. Accurate tracking starts with weighing portions — a digital kitchen scale removes all the guesswork.
Mushrooms Nutrition Facts
| Nutrient | Per 100g | Per serving (18g) |
|---|---|---|
| Calories | 22 kcal | 4 kcal |
| Protein | 3.1g | 0.6g |
| Carbohydrates | 3.3g | 0.6g |
| of which Sugars | 2.0g | 0.4g |
| Fat | 0.3g | 0.1g |
| of which Saturates | 0.1g | 0.0g |
| Fibre | 1.0g | 0.2g |
| Sodium | 5.0mg | 1mg |
| Potassium | 318.0mg | 57mg |
| Calcium | 3.0mg | 1mg |
| Iron | 0.5mg | 0.1mg |
| Vitamin C | 2.1mg | 0.4mg |
| Vitamin A | 0.0µg | 0µg |
| Selenium | 9.3µg | 2µg |
| Riboflavin (B2) | 0.4mg | 0.1mg |
% of Daily Value (per 100g)
Based on a standard 2,000-calorie reference diet — the same basis used on nutrition labels in the US and UK.
- Low in saturated fat (0% DV)
- Low in sodium (0% DV)
- A good source of selenium (17% DV)
- High in riboflavin (B2) (31% DV) — an excellent source
- Calories: 1% DV
- Protein: 6% DV
- Carbohydrates: 1% DV
- Fibre: 4% DV
- Fat: 0% DV
- Saturated fat: 0% DV
- Sodium: 0% DV
- Potassium: 7% DV
- Calcium: 0% DV
- Iron: 3% DV
- Vitamin C: 2% DV
- Vitamin A: 0% DV
- Selenium: 17% DV
- Riboflavin (B2): 31% DV
Useful for tracking mushrooms
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MORiSH Pork Chicharrónes
79% protein, zero carbs. Air-fried, not baked. One of the cleanest macros of any snack.
Shop MORiSH →Have a cat or dog? Check whether mushrooms is safe for your dog or safe for your cat before sharing. Also check the full ingredient breakdown and food safety guide for pregnancy and storage advice. Use a meal prep container set to portion out mushrooms for the week. Tracking supplements too? Check drug and supplement interactions before combining anything new.
Good to know
Cooking method matters here too — boiling can leach some water-soluble vitamins into the cooking water, while steaming or roasting tends to retain more.
Does mushrooms fit your diet?
Low-carb / keto
Mushrooms contains 3.3g of carbohydrate per 100g, low enough to fit comfortably within most low-carb or ketogenic daily carb allowances — check the fat and protein split above against your specific macro targets.
Weight management
At 22 calories per 100g, mushrooms is calorie-light relative to its volume, which can help keep a meal within a calorie target without needing very small portions.
Frequently Asked Questions
How many calories in mushrooms per 100g?
Mushrooms contains 22 calories per 100g, based on USDA reference data.
Is mushrooms high in calories?
A 1 cup sliced of mushrooms (18g) has around 4 calories — roughly 0% of a 2,000-calorie daily intake.
Is mushrooms good for weight loss?
At 22 calories per 100g, mushrooms is relatively low in calories and can fit well into a weight-loss diet. A 1 cup sliced provides about 4 calories.
How much protein is in mushrooms?
Mushrooms contains 3.1g of protein per 100g.
Is mushrooms a good source of fibre?
Mushrooms is relatively low in fibre at 1.0g per 100g, so pairing it with fibre-rich sides (vegetables, whole grains, legumes) can help balance a meal.
How does mushrooms compare to asparagus, cooked, boiled, drained?
Mushrooms has 22 calories per 100g, close to asparagus, cooked, boiled, drained at 22 — 0 calories fewer per 100g. See the full macro breakdown above.
Is mushrooms keto-friendly?
Mushrooms contains 3.3g of carbohydrate per 100g, which fits comfortably within most ketogenic daily carb allowances — check it against your specific daily carb target.
How many servings of mushrooms for 20g of protein?
With 3.1g of protein per 100g, you'd need roughly 645g of mushrooms to reach 20g of protein
Foods with a similar calorie count
Other vegetables closest to mushrooms by calories per 100g:
| Food | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|
| Mushrooms (this page) | 22 kcal | 3.1g | 3.3g | 0.3g |
| Asparagus, Cooked, Boiled, Drained | 22 kcal | 2.4g | 4.1g | 0.2g |
| Beans, Snap, Green, Canned | 22 kcal | 1.1g | 4.3g | 0.5g |
| Beet Greens, Raw | 22 kcal | 2.2g | 4.3g | 0.1g |
| Broccoli Raab, Raw | 22 kcal | 3.2g | 2.9g | 0.5g |
| Cardoon, Cooked, Boiled, Drained | 22 kcal | 0.8g | 5.3g | 0.1g |
| Cowpeas, Leafy Tips, Cooked, Boiled | 22 kcal | 4.7g | 2.8g | 0.1g |
More kit for mushrooms tracking
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DeerRun A1 Pro Treadmill
Hit your calorie targets at home — DeerRun's fold-flat treadmill hits 10mph with auto incline.
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Nutrition data: USDA FoodData Central (public domain, CC0 1.0). Values are per 100g unless stated.