Carbs in Portobello Mushroom
How many carbs are in portobello mushroom?
Portobello Mushroom has 29g net carbs per 100g — 29.7g total carbs minus 0.7g fiber — plus 6.9g protein, 3.5g fat, and 179 calories. That makes portobello mushroom high in net carbs and higher than the typical vegetable, which averages about 17.9g net carbs per 100g. At this carb count, portobello mushroom is best limited to small portions on keto (usually 20–50g net carbs per day). Values are per per 100 g, sourced from Open Food Facts; net carbs are computed by CarbMeNot.
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Portobello Mushroom runs higher in carbs, so portions matter. CarbMeNot tracks every gram from a photo, so you stay under your daily limit without the math.
Last updated June 10, 2026 · Reviewed by Jordan Lee, Nutrition Editor
Values per 100 g.
Is portobello mushroom keto-friendly?
Portobello Mushroom is generally not keto-friendly. It has 29g net carbs per 100g (29.7g total carbs − 0.7g fiber). On a standard keto diet (20–50g net carbs per day), even one serving uses a large share of your daily carbs, so keep portions small or save it for a higher-carb day.
Carbs by serving size
| Serving | Net carbs | Total carbs | Protein | Calories |
|---|---|---|---|---|
| 100 g (3.5 oz) | 29g | 29.7g | 6.9g | 179 |
| 1 oz (28 g) | 8.1g | 8.3g | 1.9g | 50 |
How many calories are in portobello mushroom?
Portobello Mushroom has 179 calories per 100g. That's alongside 6.9g protein, 3.5g fat, and 29g net carbs per 100g.
Nutrition facts
| Nutrient | Amount (per 100 g) |
|---|---|
| Calories | 179 |
| Total carbs | 29.7g |
| Net carbs | 29g |
| Fiber | 0.7g |
| Sugar | 2.8g |
| Sugar alcohols | 0g |
| Protein | 6.9g |
| Fat | 3.5g |
| Sodium | 214mg |
| Potassium | 0mg |
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 is generally not keto-friendly. It has 29g net carbs per 100g (29.7g total carbs − 0.7g fiber). On a standard keto diet (20–50g net carbs per day), even one serving uses a large share of your daily carbs, so keep portions small or save it for a higher-carb day.
- How many calories are in portobello mushroom?
- Portobello Mushroom has 179 calories per 100 grams.
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CarbMeNot provides general nutrition information, not medical advice. Values are estimates — verify before relying on them for any health decision. See our Medical Disclaimer.