How many carbs are in popcorn?
1 oz (28 g) of popcorn has 22.1 g of total carbs, including 4.1 g of fiber, so about 17.9 g of net carbs. Per 3.5 oz (100 g): 77.8 g.
Numbers are for the USDA entry Snacks, popcorn, air-popped. Other forms are compared below.
Carbs in popcorn by size and measure
| Measure | Weight | Total carbs | Fiber | Net carbs | Sugars | % DV |
|---|---|---|---|---|---|---|
| 1 cup | 8 g | 6.2 g | 1.2 g | 5.1 g | 0.07 g | 2% |
| 1/2 cup | 4 g | 3.1 g | 0.58 g | 2.5 g | 0.03 g | 1% |
| 1 oz | 28 g | 22.1 g | 4.1 g | 17.9 g | 0.25 g | 8% |
| 100 g | 3.5 oz | 77.8 g | 14.5 g | 63.3 g | 0.87 g | 28% |
Weights are the household measures USDA lists for this exact food. % DV uses the FDA Daily Value of 275 g. Net carbs are total carbs minus fiber.
What the carbs are made of
Of the 22.1 g of carbs in 1 oz, 4.1 g is fiber and 0.25 g is total sugars. The remaining 17.7 g is starch and other carbohydrates. USDA reports total sugars for this food. It does not split natural from added sugar, so check the label of packaged versions.
Raw, cooked and other forms
Per 100 g, the 9 USDA entries below range from 53.4 g in popcorn, ready-to-eat, nfs to 78.5 g in popcorn, caramel coated.
| USDA entry | Per 100 g | Per serving |
|---|---|---|
| Snacks, popcorn, air-popped | 77.8 g | 22.1 g per 1 oz |
| Popcorn, microwave, low fat and sodium | 73.4 g | 20.8 g per 1 oz |
| Popcorn, microwave (butter) flavor, made with palm oil | 57.3 g | 16.2 g per 1 oz |
| Popcorn, air-popped, with added butter | 65.8 g | 18.6 g per 1 oz |
| Popcorn, NFS | 55 g | 15.6 g per 1 oz |
| Popcorn, air-popped, no butter added | 77.5 g | 22 g per 1 oz |
| Popcorn, ready-to-eat, NFS | 53.4 g | 15.1 g per 1 oz |
| Popcorn, caramel coated | 78.5 g | 22.2 g per 1 oz |
| Popcorn, chocolate coated | 76.4 g | 21.7 g per 1 oz |
Each row is a separate USDA entry with its own household measure. A dash means USDA lists no comparable measure for that entry.
How popcorn compares with other snacks
Among the 30 snacks people look up most, popcorn ranks 4th for carbs per 3.5 oz (100 g) and 10th per typical serving.
| # | Food | Serving | Per serving | Per 100 g |
|---|---|---|---|---|
| 1 | Rice crackers | 1 cracker, 3 g | 2.5 g | 82.6 g |
| 2 | Rice cakes | 1 cake, 9 g | 7.3 g | 81.5 g |
| 3 | Pretzel chips | 1 cup, 40 g | 31.4 g | 78.4 g |
| 4 | Popcorn | 1 oz, 28.3 g | 22.1 g | 77.8 g |
| 5 | Melba toast | 1 cracker, 5 g | 3.8 g | 76.6 g |
| 6 | Snack bar | 1 bar, 60 g | 45.3 g | 75.5 g |
| … | ||||
| 11 | Rice paper | 1 medium paper, 15 g | 10.8 g | 72.3 g |
| … | ||||
| 16 | Tortilla chips | 1 cup, 30 g | 20.3 g | 67.8 g |
| … | ||||
| 25 | Corn chips | 1 cup, 45 g | 25.6 g | 56.8 g |
| … | ||||
| 27 | Potato chips | 1 cup, 25 g | 13.5 g | 53.8 g |
The list is the 30 snacks most asked about in US searches for protein, calories, carbs, sugar and fiber, each as one USDA entry with its usual serving. Rows in between are skipped (…).
Keep exploring
Sources
Nutrients and household measures: USDA FoodData Central, April 2026 release (accessed 2026-10-15)
- Snacks, popcorn, air-popped: Snacks, popcorn, air-popped, FDC ID 167959 (SR Legacy, published 2019-04-01)
- Popcorn, microwave, low fat and sodium: Popcorn, microwave, low fat and sodium, FDC ID 168139 (SR Legacy, published 2019-04-01) · full nutrition facts
- Popcorn, microwave (butter) flavor, made with palm oil: Popcorn, microwave, regular (butter) flavor, made with palm oil, FDC ID 173141 (SR Legacy, published 2019-04-01) · full nutrition facts
- Popcorn, air-popped, with added butter: Popcorn, air-popped, with added butter, FDC ID 2708220 (FoodData Central survey (FNDDS) 2024-10-31)
- Popcorn, NFS: Popcorn, NFS, FDC ID 2708216 (FoodData Central survey (FNDDS) 2024-10-31)
- Popcorn, air-popped, no butter added: Popcorn, air-popped, no butter added, FDC ID 2708219 (FoodData Central survey (FNDDS) 2024-10-31)
- Popcorn, ready-to-eat, NFS: Popcorn, ready-to-eat, NFS, FDC ID 2708231 (FoodData Central survey (FNDDS) 2024-10-31)
- Popcorn, caramel coated: Popcorn, caramel coated, FDC ID 2708239 (FoodData Central survey (FNDDS) 2024-10-31)
- Popcorn, chocolate coated: Popcorn, chocolate coated, FDC ID 2708241 (FoodData Central survey (FNDDS) 2024-10-31)
Comparison foods:
- Rice crackers: Crackers, rice, FDC ID 2708163
- Rice cakes: Snacks, rice cakes, brown rice, plain, unsalted, FDC ID 170250
- Pretzel chips: Pretzel chips, hard, plain, FDC ID 2708256
- Melba toast: Melba toast, FDC ID 2707702
- Snack bar: Snack bar, oatmeal, FDC ID 2708100
- Rice paper: Rice paper, FDC ID 2708166
- Tortilla chips: Tortilla chips, plain, FDC ID 2708202
- Corn chips: Corn chips, plain, FDC ID 2708196
- Potato chips: Potato chips, plain, FDC ID 2709422
How we calculate: every amount is the USDA value per 3.5 oz (100 g) scaled to the gram weight USDA lists for that measure. 1 oz = 28.35 g and 1 lb = 453.6 g. Daily Values: FDA, 21 CFR 101.9, for adults and children 4 years and older. A dash (—) means USDA reports no value. How we verify.