Calories in 1 Oz of Plain Popcorn
1 oz of plain popcorn (28 g) has 137 calories. That is 7% of a 2,000 calorie diet.
The calories come from 2.9 g of protein, 6.6 g of fat and 17 g of carbohydrates, a split of 8% protein, 42% fat and 49% carbs. For comparison, 2 oz of plain popcorn has 273 calories. Burning 137 calories takes about 24 minutes of brisk walking or 11 minutes of running for a 155 lb adult, based on Harvard Health Publishing activity estimates.
Plain Popcorn Calorie Calculator
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Plain Popcorn calories by serving size
Common amounts of plain popcorn with calories and macros. Tap a row for its full nutrition page.
Plain Popcorn vs similar foods
Calories per 100 g compared with other snacks.
Plain Popcorn: common questions
How many calories are in 1 oz of plain popcorn?
1 oz of plain popcorn weighs about 28 g and has 137 calories.
How much protein is in 1 oz of plain popcorn?
1 oz of plain popcorn has 2.9 g of protein, which is 6% of the 50 g Daily Value.
How many carbs are in 1 oz of plain popcorn?
1 oz of plain popcorn has 17 g of carbohydrates, including 3.2 g of fiber and 0.2 g of sugars.
How much plain popcorn is 100 calories?
100 calories of plain popcorn is 21 g, about 2 cups of plain popcorn.
More about plain popcorn
Amount for a target
Weights and conversions
Source: USDA FoodData Central, FNDDS 2021-2023. FDC ID 2708232. Original description: Popcorn, ready-to-eat, plain. Portion weights are USDA household measures.