Carbs in Portobello Mushroom

Portobello Mushroom (per 100 g) contains 29.7g total carbs, 29g net carbs, 3.5g fat, 6.9g protein, and 179 calories.

Last updated June 10, 2026 · Reviewed by Jordan Lee, RD, Registered Dietitian

Portobello Mushroom
29g
Net carbs
29.7g
Total carbs
0.7g
Fiber
6.9g
Protein
3.5g
Fat
179
Calories

Values per 100 g.

Carbs by serving size

ServingNet carbsTotal carbsCalories
100 g (3.5 oz)29g29.7g179
1 oz (28 g)8.1g8.3g50

Nutrition facts

NutrientAmount (per 100 g)
Calories179
Total carbs29.7g
Net carbs29g
Fiber0.7g
Sugar2.8g
Sugar alcohols0g
Protein6.9g
Fat3.5g
Sodium214mg
Potassium0mg

Source: Open Food Facts (Generic). Net carbs = total carbs − fiber − sugar alcohols, computed by CarbMeNot.

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Frequently asked questions

How many carbs are in portobello mushroom?
Portobello Mushroom has 29.7g of total carbs and 29g of net carbs per 100 grams.
How many net carbs are in portobello mushroom?
Portobello Mushroom has 29g of net carbs per 100 grams (total carbs 29.7g minus 0.7g fiber).
Is portobello mushroom keto-friendly?
Portobello Mushroom has 29g net carbs per 100g, which is high for keto. Enjoy it in small portions or save it for higher-carb days.
How many calories are in portobello mushroom?
Portobello Mushroom has 179 calories per 100 grams.

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