Carbs in 1 Cup Air-Popped Popcorn
Keto-friendlyHow many carbs are in 1 cup air-popped popcorn?
1 Cup Air-Popped Popcorn has 62.5g net carbs per 100g — 77.5g total carbs minus 15g fiber — plus 12.5g protein, 5g fat, and 388 calories. 1 cup (8g) works out to about 5g net carbs and 31 calories. That makes 1 cup air-popped popcorn high in net carbs and about average for the typical snacks and sweet, which averages about 55.7g 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 per 100 g, sourced from Manufacturer-reported values; net carbs are computed by CarbMeNot.
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Last updated June 10, 2026 · Reviewed by Jordan Lee, Nutrition Editor
Values per 100 g.
Is 1 cup air-popped popcorn keto-friendly?
1 Cup Air-Popped Popcorn is generally not keto-friendly. It has 62.5g net carbs per 100g (77.5g total carbs − 15g fiber). A typical serving — 1 cup (8g) — is about 5g net carbs. 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 |
|---|---|---|---|---|
| 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 has 388 calories per 100g. 1 cup (8g) has about 31 calories. That's alongside 12.5g protein, 5g fat, and 62.5g net carbs per 100g.
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 has 77.5g of total carbs and 62.5g of net carbs per 100 grams.
- How many net carbs are in 1 cup air-popped popcorn?
- 1 Cup Air-Popped Popcorn has 62.5g of net carbs per 100 grams (total carbs 77.5g minus 15g fiber).
- Is 1 cup air-popped popcorn keto-friendly?
- 1 Cup Air-Popped Popcorn is generally not keto-friendly. It has 62.5g net carbs per 100g (77.5g total carbs − 15g fiber). A typical serving — 1 cup (8g) — is about 5g net carbs. 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 1 cup air-popped popcorn?
- 1 Cup Air-Popped Popcorn has 388 calories per 100 grams.
- How many carbs are in 1 cup (8g) of 1 cup air-popped popcorn?
- 1 cup (8g) of 1 cup air-popped popcorn (8g) has about 5g net carbs, 6.2g total carbs, and 31 calories.
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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.