Button mushrooms are excellent for keto: ~2.3g net carbs per 100g, a meaty texture, and deep umami that adds substance to meals without spiking carbs.
Is Button Mushroom Keto?

YOUR PORTION
How much are you having?
Scale the published reference values to your portion.
Per 100 g (as listed by source). USDA FoodData Central.
How this is calculated
total carbohydrate - fiber. Each published value is multiplied by your portion divided by the reference amount. No extra fiber, sugar alcohol or allulose deductions are applied here.
Grams and milliliters are not interchangeable. Household measures require a food-specific conversion; check your scale or product label.
2.3gnet carbs in your portion
- Total carbs
- 3.3g
- Fiber
- 1g
- Protein
- 3.1g
- Fat
- 0.3g
- Calories
- 22
Button mushrooms are excellent for keto: ~2.3g net carbs per 100g, a meaty texture, and deep umami that adds substance to meals without spiking carbs.
- Net carbs (100 g)2.3g
- Protein (100 g)3.1g
- Fat (100 g)0.3g
- Keto verdictKeto-friendly
NUTRITION FACTS
Per 100 g (as listed by source)
Source: USDA FoodData Central reference record
Source fit: generic reference; variety, brand, or preparation may differ
Net-carb calculation: total carbohydrate - fiber
This USDA record is used as a generic nutrition reference; variety, brand, or preparation may differ.
Nutrition record reviewed 2026-07-09. Maintained by KetoLens Team.
WHY IT'S KETO-FRIENDLY
- Very low net carbs (~2.3g/100g) fit easily into keto macros
- Provides modest protein (3.1g/100g) for meal balance
- Umami-rich and meaty texture adds satisfaction
- Low calorie density allows generous portions
- Versatile across breakfasts, mains, and sides
- Pairs well with keto fats (butter, bacon-grease, olive-oil)
PREPARATION SUGGESTIONS
SAUTÉED
Slice and sauté in butter with garlic until golden; season with salt, pepper, and thyme for a classic side.
STUFFED MUSHROOMS
Fill caps with cream-cheese, cooked sausage, and herbs; bake at 375°F for ~20 minutes.
MUSHROOM OMELET
Sauté slices, then fold into eggs with cheese for a protein-rich keto breakfast.
ROASTED
Toss whole or halved mushrooms with olive-oil, salt, and pepper; roast at 400°F for 25–30 minutes.
CREAM OF MUSHROOM SOUP
Sauté mushrooms/onions, add broth and heavy-cream; blend smooth for a cozy keto soup.
MUSHROOM PIZZA TOPPING
Top keto crusts with thin slices—pairs perfectly with cheese and sausage.