1 Cup Air-Popped Popcorn Calories & Carbs
Keto-friendlyLast updated September 8, 2026 · Compiled by the CarbMeNot Team
Values per 1 cup (8g), 8g; per 100 g: 62.5g net carbs, 388 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 1 cup air-popped popcorn?
1 Cup Air-Popped Popcorn — 1 cup (8g), 8g — has 5g net carbs: 6.2g total carbs minus 1.2g fiber, plus 1g protein, 0.4g fat, and 31 calories. Per 100g that is 62.5g net carbs (77.5g total carbs, 15g fiber) and 388 calories. That makes 1 cup air-popped popcorn high in net carbs and about average for the typical snacks and sweet, which averages about 55.0g net carbs per 100g. With this carb count, 1 cup air-popped popcorn 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 1 cup air-popped popcorn keto-friendly?
Yes, 1 cup air-popped popcorn can fit a keto diet in moderate portions. 1 cup (8g), 8g is 5g net carbs (6.2g total carbs − 1.2g fiber); per 100g that is 62.5g net carbs. On a standard keto diet (20–50g net carbs per day), that leaves plenty of room for other snacks and sweets and meals.
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Carbs by serving size
| Serving | Net carbs | Total carbs | Protein | Calories |
|---|---|---|---|---|
| 1 cup (8g) | 5g | 6.2g | 1g | 31 |
| 100 g (3.5 oz) | 62.5g | 77.5g | 12.5g | 388 |
| 1 oz (28 g) | 17.5g | 21.7g | 3.5g | 109 |
How many calories are in 1 cup air-popped popcorn?
1 Cup Air-Popped Popcorn — 1 cup (8g), 8g — has 31 calories, with 1g protein, 0.4g fat, and 5g net carbs. Per 100g: 388 calories and 62.5g net carbs.
Nutrition facts
| Nutrient | Amount (per 100 g) |
|---|---|
| Calories | 388 |
| Total carbs | 77.5g |
| Net carbs | 62.5g |
| Fiber | 15g |
| Sugar | 1.2g |
| Sugar alcohols | 0g |
| Protein | 12.5g |
| Fat | 5g |
| Sodium | 0mg |
| Potassium | 325mg |
Source: Manufacturer-reported values (snacks-sweets). Net carbs = total carbs − fiber − sugar alcohols, computed by CarbMeNot.
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Frequently asked questions
- How many carbs are in 1 cup air-popped popcorn?
- 1 Cup Air-Popped Popcorn (1 cup (8g), 8g) has 6.2g of total carbs and 5g of net carbs. Per 100 grams: 77.5g total, 62.5g net.
- How many net carbs are in 1 cup air-popped popcorn?
- 1 Cup Air-Popped Popcorn has 5g of net carbs per 1 cup (8g), 8g — 6.2g total carbs minus 1.2g fiber.
- Is 1 cup air-popped popcorn keto-friendly?
- Yes, 1 cup air-popped popcorn can fit a keto diet in moderate portions. 1 cup (8g), 8g is 5g net carbs (6.2g total carbs − 1.2g fiber); per 100g that is 62.5g net carbs. On a standard keto diet (20–50g net carbs per day), that leaves plenty of room for other snacks and sweets and meals.
- How many calories are in 1 cup air-popped popcorn?
- 1 Cup Air-Popped Popcorn (1 cup (8g), 8g) has 31 calories; that is 388 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.