Portobello Mushroom Grilled Calories & Carbs
Keto-friendlyLast updated September 8, 2026 · Compiled by the CarbMeNot Team
Values per 1 mushroom (84g); per 100 g: 3.3g net carbs, 26 cal. Net carbs = total carbs − fiber − sugar alcohols — do the math for any label with the free net carbs calculator.
How many carbs are in portobello mushroom grilled?
Portobello Mushroom Grilled — 1 mushroom (84g) — has 2.8g net carbs: 4g total carbs minus 1.3g fiber, plus 2g protein, 0.4g fat, and 22 calories. Per 100g that is 3.3g net carbs (4.8g total carbs, 1.5g fiber) and 26 calories. That makes portobello mushroom grilled relatively low in net carbs and lower than the typical vegetable, which averages about 17.9g net carbs per 100g. With this carb count, portobello mushroom grilled fits a keto or low-carb diet (usually 20–50g net carbs per day) in normal portions. Values are per 100 g, sourced from Manufacturer-reported values; net carbs are computed by CarbMeNot.
Is portobello mushroom grilled keto-friendly?
Yes — portobello mushroom grilled is keto-friendly. 1 mushroom (84g) is 2.8g net carbs (4g total carbs − 1.3g fiber); per 100g that is 3.3g net carbs. On a standard keto diet (20–50g net carbs per day), that leaves plenty of room for other vegetables and meals.
Tracking portobello mushroom grilled on keto?
Snap a photo and CarbMeNot logs the 2.8g net carbs in 1 mushroom of portobello mushroom grilled — and everything else you eat — automatically. No database searching, no guessing.
Carbs by serving size
| Serving | Net carbs | Total carbs | Protein | Calories |
|---|---|---|---|---|
| 1 mushroom | 2.8g | 4g | 2g | 22 |
| 100 g (3.5 oz) | 3.3g | 4.8g | 2.4g | 26 |
| 1 oz (28 g) | 0.9g | 1.3g | 0.7g | 7 |
How many calories are in portobello mushroom grilled?
Portobello Mushroom Grilled — 1 mushroom (84g) — has 22 calories, with 2g protein, 0.4g fat, and 2.8g net carbs. Per 100g: 26 calories and 3.3g net carbs.
Nutrition facts
| Nutrient | Amount (per 100 g) |
|---|---|
| Calories | 26 |
| Total carbs | 4.8g |
| Net carbs | 3.3g |
| Fiber | 1.5g |
| Sugar | 2.7g |
| Sugar alcohols | 0g |
| Protein | 2.4g |
| Fat | 0.5g |
| Sodium | 11mg |
| Potassium | 471mg |
Source: Manufacturer-reported values (vegetables). Net carbs = total carbs − fiber − sugar alcohols, computed by CarbMeNot.
Log portobello mushroom grilled in one tap
Snap a photo and CarbMeNot's AI logs the carbs, protein, and fat automatically.
Frequently asked questions
- How many carbs are in portobello mushroom grilled?
- Portobello Mushroom Grilled (1 mushroom, 84g) has 4g of total carbs and 2.8g of net carbs. Per 100 grams: 4.8g total, 3.3g net.
- How many net carbs are in portobello mushroom grilled?
- Portobello Mushroom Grilled has 2.8g of net carbs per 1 mushroom (84g) — 4g total carbs minus 1.3g fiber.
- Is portobello mushroom grilled keto-friendly?
- Yes — portobello mushroom grilled is keto-friendly. 1 mushroom (84g) is 2.8g net carbs (4g total carbs − 1.3g fiber); per 100g that is 3.3g net carbs. On a standard keto diet (20–50g net carbs per day), that leaves plenty of room for other vegetables and meals.
- How many calories are in portobello mushroom grilled?
- Portobello Mushroom Grilled (1 mushroom, 84g) has 22 calories; that is 26 calories per 100 grams.
Similar foods
CarbMeNot provides general nutrition information, not medical advice. Values are estimates — verify before relying on them for any health decision. See our Medical Disclaimer.