Food calories · USDA data
Calories in popcorn
31 calories
in 1 cup, 8 g
- Protein
- 1 g
- Carbs
- 6.2 g
- Fat
- 0.4 g
- Fiber
- 1.2 g
Popcorn has 31 calories. That is USDA's figure for 1 cup, which weighs 8 g. Per 100 g, popcorn has 387 calories.
Almost all of its calories, 77%, come from carbohydrate.
It takes 26 g of popcorn to reach 100 calories, which is about 3.2 × 1 cup.
Calories by portion
| Portion | Weight | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|---|
| 1 cup | 8 g | 31 | 1 g | 6.2 g | 0.4 g |
| 1 oz | 28.3 g | 110 | 3.7 g | 22 g | 1.3 g |
| 100 g | 100 g | 387 | 12.9 g | 77.8 g | 4.5 g |
Portion weights are USDA's own. Your popcorn may weigh more or less; for an exact number, weigh it and enter the grams in the food calorie lookup.
Where the calories come from
- Protein: 13% of calories (12.9 g per 100 g)
- Carbohydrate: 77% (77.8 g per 100 g, of which 14.5 g fiber)
- Fat: 10% (4.5 g per 100 g)
Shares use the general factors of 4 calories per gram of protein and carbohydrate and 9 per gram of fat, so they can differ a little from USDA's calorie figure. Daily Values are the FDA's adult Daily Values.
Compared with similar foods
Weight for weight, pretzels has the fewest calories of these four (384 per 100 g) and saltine crackers the most (418).
| Per 100 g | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|
| Popcorn | 387 | 12.9 g | 77.8 g | 4.5 g |
| Rice cakes | 387 | 8.2 g | 81.5 g | 2.8 g |
| Pretzels | 384 | 10 g | 80.4 g | 2.9 g |
| Saltine crackers | 418 | 9.5 g | 74.1 g | 8.6 g |
Work out your own portion
The food calorie lookup has 3,070 foods. Pick a portion or type a weight in grams or ounces, then add foods to a plate to see the total for a meal. To see how a meal fits your day, the calorie calculator works out your daily calories.
Questions people ask
How many calories is in popcorn?
Popcorn has 31 calories. USDA weighs 1 cup at 8 g, and popcorn has 387 calories per 100 g.
How much protein does popcorn have?
1 cup (8 g) has 1 g of protein, 2% of the 50 g Daily Value. Per 100 g it is 12.9 g.
How many carbs does popcorn have?
1 cup has 6.2 g of carbohydrate, including 1.2 g of fiber, and 0.4 g of fat.
Source: USDA FoodData Central, SR Legacy (2018). USDA entry: Snacks, popcorn, air-popped (FDC ID 167959). Values are averages; a packaged food's label may differ.