How many carbs are in popcorn?

Air-popped popcorn has 6g of carbs per cup. Movie theater popcorn: 60g+. Microwave, kettle, and theater brands compared.

Written by

Carb Lens Editorial

Nutrition writers & product team

Medically reviewed by

Dr. Alicia Nguyen, RD, CDCES

Registered Dietitian · Certified Diabetes Care & Education Specialist · 12+ years clinical experience

Published June 7, 2026 3 min readEditorial policy

Plain air-popped popcorn has 6g of carbs per cup, with 1g of fiber. Movie theater popcorn can hit 60-110g for a large bucket — same kernels, very different reality.

Popcorn comparison

Type	Serving	Carbs
Air-popped, plain	1 cup	6g
Microwave butter	1 cup	7g
Kettle corn	1 cup	12g
Caramel corn	1 cup	25g
Skinny Pop	1 cup	5g
Smartfood White Cheddar	1 cup	7g

Movie theater sizes

Chain	Size	Carbs
AMC	Small (8 cups)	51g
AMC	Medium (15 cups)	95g
AMC	Large (20 cups)	127g
Regal	Small	60g
Regal	Large (24 cups)	144g
Cinemark	Junior	27g
Cinemark	Large (170 oz)	200g+

Added butter topping at theaters can double the calories but doesn't add carbs.

Why popcorn is still relatively friendly

A whole-grain snack with fiber and a moderate glycemic index (~55), air-popped popcorn is one of the better high-volume snacks for blood sugar — at home, in modest portions. The theater problem is *quantity*, not quality.

About the author

Carb Lens Editorial — Nutrition writers & product team. The Carb Lens editorial team writes practical, source-checked guides on carbs, blood sugar, and everyday nutrition. Every article is drafted by our writers and cross-referenced against USDA FoodData Central and peer-reviewed clinical guidelines.

How we source and review this article

Nutrition figures come from the USDA FoodData Central database. Blood-sugar and glycemic-load framing follows guidance from the American Diabetes Association and World Health Organization healthy-diet recommendations. Every article is medically reviewed by Dr. Alicia Nguyen, RD, CDCES before publishing and re-checked on a rolling basis. See our full editorial & medical review policy.

This article is for general information and is not a substitute for medical advice. If you're managing diabetes or another condition, always defer to your care team.