Written by CalorieData Nutrition TeamReviewed by a Registered DietitianLast Updated: March 2026
Data from USDA FoodData Central | Editorial guidelines

Calories in Popcorn

Popcorn contains 387 calories per 100g (31 cal per 1 cup air-popped). Excellent source of fiber with 15g per 100g.

Get the complete nutrition breakdown, macros, serving sizes, and health benefits below.

Nutritional Highlights

🌾

High Fiber

15g fiber per 100g

🍬

Low Sugar

Only 1.1g sugar per 100g

Nutrition Facts

Per 100g serving

Calories387
Total Fat4.5g
Total Carbohydrate77g
Dietary Fiber15g
Sugars1.1g
Protein3.5g
Sodium2mg

Macronutrient Distribution

Protein3.5g (4%)
Carbohydrates77g (80%)
Fat4.5g (10%)

Calories by Serving Size

100 grams387 cal
1 cup air-popped (8g)31 cal
3 cups air-popped (24g)93 cal
1 ounce (28g)108 cal
1 small bag (42g)163 cal

Compare Popcorn with Similar Foods

See how Popcorn stacks up against other foods in nutritional value:

About Popcorn Nutrition

Popcorn is a whole grain snack made from dried corn kernels that expand when heated. This ancient food has been enjoyed for thousands of years and remains one of the most popular snacks worldwide. When air-popped without excessive butter or oil, popcorn is a surprisingly healthy, high-fiber, low-calorie treat.

With 387 calories per 100 grams, Popcorn provides 3.5g of protein,77g of carbohydrates, and 4.5g of fat.

Macronutrient Breakdown

  • Protein: 3.5g - 4% of calories
  • Carbohydrates: 77g - 80% of calories
  • Fat: 4.5g - 10% of calories

Health Benefits of Popcorn

  • Whole grain food providing beneficial fiber (15g per 100g)
  • Low calorie when air-popped - only 31 calories per cup
  • Contains polyphenol antioxidants concentrated in the hull
  • Good source of B vitamins and minerals like magnesium and zinc
  • Naturally gluten-free whole grain option
  • High volume, low calorie density promotes satiety

How to Eat Popcorn

Air-pop kernels for the healthiest option - no oil needed. Season with herbs, spices, or nutritional yeast instead of butter. Stovetop popping with minimal oil is also healthy. Avoid microwave popcorn with artificial butter flavoring. Pre-popped bags vary widely - check labels for added fats and sodium.

Selection and Storage

Store unpopped kernels in an airtight container at room temperature for up to a year. Popped popcorn is best eaten fresh but stores 1-2 weeks in an airtight container. Choose plain kernels over microwave bags. For pre-popped, look for minimal ingredients (corn, oil, salt) and low sodium options.

Dietary Considerations

Plain air-popped popcorn is naturally vegan, gluten-free, and suitable for most diets. However, added butter, cheese, or caramel dramatically increases calories and fat. Movie theater popcorn can contain 1,000+ calories per large tub. Those with corn allergies or diverticulitis should avoid popcorn.

Frequently Asked Questions About Popcorn

How many calories are in a cup of popcorn?

Air-popped popcorn has only 31 calories per cup (8g). Oil-popped popcorn has about 55 calories per cup. Movie theater popcorn can have 150-200+ calories per cup due to coconut oil and butter. One serving (3 cups) of air-popped is just 93 calories.

Is popcorn a healthy snack for weight loss?

Yes, air-popped popcorn is excellent for weight loss. It has high volume and low calorie density - you can eat 3 cups for under 100 calories. The 15g of fiber per 100g keeps you full longer. Avoid butter and choose light seasonings for best results.

Is popcorn better than chips?

Yes, popcorn is generally healthier than chips. Air-popped popcorn has 31 calories per cup vs chips at 150+ calories per serving. Popcorn is a whole grain with 15g fiber per 100g, while chips are refined. However, heavily buttered popcorn can equal chips in calories.

Is microwave popcorn unhealthy?

Some microwave popcorn can be unhealthy due to added fats, artificial flavoring, and high sodium. Look for brands with simple ingredients and no trans fats. Better yet, pop your own kernels - it takes just 3 minutes in a paper bag in the microwave with no oil needed.

How much popcorn can I eat on a diet?

On a weight loss diet, 3-4 cups of air-popped popcorn (93-124 calories) makes an excellent snack. This provides good volume and fiber to satisfy hunger. Avoid eating directly from a large bowl - portion out your serving to prevent overeating.

Quick Nutrition Facts

CategorySnacks
Calories/100g387
Protein3.5g
Carbs77g
Fat4.5g

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Data Accuracy Note: Nutrition values are based on USDA FoodData Central laboratory analysis. Actual values may vary based on growing conditions, preparation methods, and specific product brands. Values are rounded to one decimal place.