Carbs in Microwave Popcorn
How many carbs are in microwave popcorn?
Microwave Popcorn has 36.5g net carbs per 100g — 44g total carbs minus 7.5g fiber — plus 11g protein, 24g fat, and 424 calories. 1 bag popped (100g) works out to about 36.5g net carbs and 424 calories. That makes microwave popcorn high in net carbs and lower than the typical snacks and sweet, which averages about 52.2g net carbs per 100g. At this carb count, microwave popcorn is best limited to small portions on keto (usually 20–50g net carbs per day). Values are per per 100 g, sourced from Manufacturer-reported values; net carbs are computed by CarbMeNot.
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Microwave Popcorn 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 microwave popcorn keto-friendly?
Microwave Popcorn is generally not keto-friendly. It has 36.5g net carbs per 100g (44g total carbs − 7.5g fiber). A typical serving — 1 bag popped (100g) — is about 36.5g 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 bag popped | 36.5g | 44g | 11g | 424 |
| 100 g (3.5 oz) | 36.5g | 44g | 11g | 424 |
| 1 oz (28 g) | 10.2g | 12.3g | 3.1g | 119 |
How many calories are in microwave popcorn?
Microwave Popcorn has 424 calories per 100g. 1 bag popped (100g) has about 424 calories. That's alongside 11g protein, 24g fat, and 36.5g net carbs per 100g.
Nutrition facts
| Nutrient | Amount (per 100 g) |
|---|---|
| Calories | 424 |
| Total carbs | 44g |
| Net carbs | 36.5g |
| Fiber | 7.5g |
| Sugar | 0g |
| Sugar alcohols | 0g |
| Protein | 11g |
| Fat | 24g |
| Sodium | 805mg |
| Potassium | 0mg |
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 microwave popcorn?
- Microwave Popcorn has 44g of total carbs and 36.5g of net carbs per 100 grams.
- How many net carbs are in microwave popcorn?
- Microwave Popcorn has 36.5g of net carbs per 100 grams (total carbs 44g minus 7.5g fiber).
- Is microwave popcorn keto-friendly?
- Microwave Popcorn is generally not keto-friendly. It has 36.5g net carbs per 100g (44g total carbs − 7.5g fiber). A typical serving — 1 bag popped (100g) — is about 36.5g 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 microwave popcorn?
- Microwave Popcorn has 424 calories per 100 grams.
- How many carbs are in 1 bag popped of microwave popcorn?
- 1 bag popped of microwave popcorn (100g) has about 36.5g net carbs, 44g total carbs, and 424 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.