White button Mushrooms Calories and Nutrition Facts
White button Mushrooms has 31 calories per 100 g, with 2.9 g protein, 4.1 g carbs and 0.4 g fat. Official USDA analytical record: Mushrooms, white button (FDC ID: 1999629).
A 100g serving of white button mushrooms contains 31 calories, 2.9g protein, 4.1g total carbs (2.4g net carbs), and 0.4g fat.
Energy density
0.31 kcal/g
very low
Protein / 100 kcal
9.4 g
satiety per calorie
Net carbs / 100 g
2.4 g
carbs minus fibre
100 kcal portion
323 g
≈ 11.4 oz
- Sugars
- 0g
- Fibre
- 1.7g
- Saturated fat
- 0g
- Sodium
- 6mg
Mushrooms, white button nutrition facts
The table below shows the complete nutritional profile for mushrooms, white button per 100 g (the laboratory analytical standard), alongside the share of the FDA Daily Value each nutrient covers. Most of its calories come from carbohydrate, and it is relatively low in calories.
| Nutrient | Per 100 g | % DV* |
|---|---|---|
| Calories | 31 kcal | — |
| Protein | 2.9 g | 6% |
| Carbohydrate | 4.1 g | 1% |
| Fat | 0.4 g | 1% |
| Sugars | 0 g | — |
| Fibre | 1.7 g | 6% |
| Saturated fat | 0 g | 0% |
| Sodium | 6 mg | 0% |
*Percent Daily Value per 100 g, against the FDA reference intakes for adults and children 4+ years (50 g protein, 275 g carbohydrate, 28 g fibre, 78 g fat, 20 g saturated fat, 2300 mg sodium). Total sugars has no Daily Value — the 50 g reference applies to added sugars only, and USDA reports total sugars here.
White button Mushrooms calories by weight: ounces, pounds and grams
USDA publishes this food per 100 g, so here is the same profile converted to the weights a kitchen scale and a US recipe actually use. At 0.31 kcal per gram (very low energy density), you can eat a large volume of this for very few calories, which makes it useful for filling out a meal in a deficit.
| Amount | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|
| 1 oz (28 g) | 9 kcal | 0.8 g | 1.2 g | 0.1 g |
| 100 g (3.5 oz) | 31 kcal | 2.9 g | 4.1 g | 0.4 g |
| 4 oz (113 g) | 35 kcal | 3.3 g | 4.6 g | 0.5 g |
| 8 oz / ½ lb (227 g) | 70 kcal | 6.6 g | 9.3 g | 0.9 g |
| 1 lb (454 g) | 141 kcal | 13.2 g | 18.6 g | 1.8 g |
Data sourced from USDA FoodData Central Foundation Foods dataset (public domain, CC0). Laboratory food profile and analytical measurements verified under USDA FDC ID 1999629.
View raw USDA laboratory entry →How white button mushrooms compares to other vegetables
Against the 80 vegetables in this database, white button mushrooms ranks 36th lowest in calories and 13th highest in protein. The category averages 50 kcal per 100 g, so this one is 38% below it. The lightest option in the category is pickles, cucumber, dill or kosher dill at 12 kcal per 100 g, and the protein leader is flour, potato at 8.1 g per 100 g.
| Vegetables (by calories) | Calories | Protein | kcal/g |
|---|---|---|---|
| 🥦 Broccoli, raw | 31 kcal | 2.6 g | 0.31 |
| 🍽️ Cabbage, green, raw | 31 kcal | 1 g | 0.31 |
| 🍄 Mushrooms, white button (this page) | 31 kcal | 2.9 g | 0.31 |
| 🫑 Peppers, bell, red, raw | 31 kcal | 0.9 g | 0.31 |
| 🫑 Peppers, bell, yellow, raw | 31 kcal | 0.8 g | 0.31 |
Portion planning with white button mushrooms
- 100 calories comes to about 323 g (11.4 oz).
- 20 g of protein takes about 690 g, bringing 214 kcal with it — that is 9.4 g of protein per 100 calories.
- Fibre density is 5.5 g per 100 calories, covering 6% of the daily fibre target per 100 g.
- Macro split by calories: 52% carbs, 37% protein, 11% fat.
Nutrient screening detail
The badges near the top of this page come from screening the per-100 g values against the FDA nutrient-content thresholds in 21 CFR 101.54–101.62. The regulations define those claims per reference serving rather than per 100 g, so treat these as a like-for-like comparison between foods, not as a statement about a product label:
- Low calorie — 31 kcal per 100 g (≤ 40)
- Low fat — 0.4 g per 100 g (≤ 3 g)
- Low saturated fat — 0 g per 100 g (≤ 1 g)
- Very low sodium — 6 mg per 100 g (≤ 35 mg)
- Sugar free — 0 g total sugars per 100 g (< 0.5 g)
- Keto-friendly — 2.4 g net carbs per 100 g (≤ 5 g)
Track white button mushrooms for free
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White button Mushrooms FAQ & Nutrition Questions
How many calories and carbs are in 100 g of white button mushrooms?
One serving of 100 g provides 31 calories, 4.1 g total carbs (2.4 g net carbs), 2.9 g protein, and 0.4 g fat.
How many calories are in 100 g of white button mushrooms?
White button Mushrooms contains 31 calories per 100 g, with 2.9 g protein, 4.1 g carbohydrate, and 0.4 g fat. Use the interactive calculator above to scale to any custom amount.
What is the USDA FoodData Central (FDC) ID for white button mushrooms?
The official USDA FoodData Central ID for "Mushrooms, white button" is FDC ID: 1999629. You can view the verified laboratory analytical record on the USDA FoodData Central Database.
What is the macronutrient breakdown of white button mushrooms?
By calories, white button mushrooms is approximately 52% carbohydrates, 37% protein, and 11% fat.
How many calories are in an ounce of white button mushrooms?
One ounce (28 g) of white button mushrooms has 9 calories, with 0.8 g protein, 1.2 g carbs and 0.1 g fat. Four ounces (113 g) comes to 35 calories, and a full pound (454 g) to 141 calories.
How much white button mushrooms is 100 calories?
About 323 g of white button mushrooms supplies 100 calories, because it carries 0.31 kcal per gram (very low energy density). You can eat a large volume of this for very few calories, which makes it useful for filling out a meal in a deficit.
How much white button mushrooms do I need for 20 g of protein?
Roughly 690 g of white button mushrooms, which also brings 214 calories with it. That works out to 9.4 g of protein per 100 calories.
How many net carbs are in white button mushrooms?
Per 100 g, white button mushrooms has 2.4 g net carbs — 4.1 g total carbohydrate minus 1.7 g fibre.
Is white button mushrooms high or low in calories for a vegetable?
White button Mushrooms sits 38% below the vegetables average of 50 kcal per 100 g, ranking 36th lowest of 80 in this category.
Is this nutrition data free to use?
Yes. The data is sourced directly from USDA FoodData Central (CC0 public domain). Viewing and scaling portions here is 100% free with no sign-up — and you can log this food free in our online food diary.