How many calories are in a croissant?

There are 231 calories, 11.97 grams of fat and 26.11 grams of carbohydrates in one medium croissant, according to FatSecret. A large croissant has 272 calories, 14.07 grams of fat and 30.69 grams of carbohydrates. A small croissant has 171 calories, 8.82 grams of fat and 19.24 grams of carbohydrates.

A medium croissant has 6.646 grams of saturated fat, 0.624 grams of polyunsaturated fat and 3.149 grams of monounsaturated fat per serving. It has 38 mg of cholesterol, 424 mg of sodium and 67 mg of potassium along with 1.5 grams of dietary fiber and 6.41 grams of added sugar, according to FatSecret.