Calories in 1 Oz of Light Flavored Popcorn

1 oz of light flavored popcorn (28 g) has 123 calories. That is 6% of a 2,000 calorie diet.

The calories come from 3.2 g of protein, 4.2 g of fat and 19 g of carbohydrates, a split of 10% protein, 30% fat and 60% carbs. For comparison, 2 oz of light flavored popcorn has 247 calories. Burning 123 calories takes about 22 minutes of brisk walking or 10 minutes of running for a 155 lb adult, based on Harvard Health Publishing activity estimates.