Popped using butter or coconut oil, AMC movie theaters' popcorn contains a high percentage of calories from fat. The Center for Science in the Public Interest, or CSPI, declared AMC one of the nominees for "Best Supporting Actor in the Obesity Epidemic."
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According to CSPI, a small serving of popcorn at AMC Theatres has about 6 cups of popcorn. A medium order contains 9 cups and a large bucket has about 16 cups of popcorn.
Calories and Sodium
A small bag of unbuttered popcorn from AMC contains about 370 calories and 210 mg of sodium, while a medium-sized serving has 590 calories and 330 mg of sodium. A large order of popcorn has 1,030 calories and 580 mg of sodium. Adding butter to your popcorn adds about 20 calories per cup.
With around 20 g of saturated fat per small bag, AMC popcorn accounts for your entire daily amount of saturated fat based on a 2,000-calorie diet. A large bag of popcorn contains nearly three days' worth of saturated fat, according to CSPI. The butter topping adds an additional 2 to 4 g of fat depending on the size of popcorn.