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Calories in croissant

406 cal / 100 g
The short answer

Croissant: about 406 calories per 100 g. A portion of 1 croissant, medium (57 g) has about 231 calories.

Calories and nutrients by portion

PortionGramsCaloriesProteinCarbsFat
100 g (3.5 oz)100 g4068.2 g45.8 g21 g
1 oz28 g1152.3 g13 g6 g
1 croissant, mini28 g1142.3 g12.8 g5.9 g
1 croissant, small42 g1713.4 g19.2 g8.8 g
1 croissant, medium57 g2314.7 g26.1 g12 g
1 croissant, large67 g2725.5 g30.7 g14.1 g

Where the calories come from

  • Protein 8%
  • Carbs 45%
  • Fat 47%

Shares are estimated with 4 calories per gram of protein and carbohydrate and 9 per gram of fat.

Full nutrition per 100 g

Calories406 kcal
Protein8.2 g
Carbohydrate45.8 g
of which sugars11.3 g
Fibre2.6 g
Fat21 g
of which saturated11.7 g
Cholesterol67 mg
Sodium384 mg
Potassium118 mg
Calcium37 mg
Iron2 mg
Vitamin C0.2 mg
Water23.2 g

How it compares with other bread and baked goods

Among the 12 bread and baked goods listed on this site, croissant ranks number 10 from the lowest in calories per 100 g, and number 6 from the highest in protein per 100 g.

Fewer calories per 100 g

  • Saltine crackers 393 cal
  • Chocolate cake 389 cal
  • Waffles 298 cal

More calories per 100 g

  • Glazed donut 421 cal
  • Chocolate chip cookie 451 cal

What 231 calories equal in exercise

For a 155 lb (70 kg) person, Harvard Health lists about 133 calories for 30 minutes of walking at 3.5 mph and about 288 for 30 minutes of running at 5 mph. By that chart, a portion of croissant (1 croissant, medium, 231 calories) equals about 52 minutes of walking or 24 minutes of running. Use the calories burned calculator for your own weight.

About these numbers

The figures come from the USDA FoodData Central entry “Croissants, butter”. They are reference averages, so brands, ripeness, cuts and recipes shift the real number. Treat them as estimates, and weigh food for the closest result.

Quick answers

How many calories are in croissant (1 croissant, medium)?

About 231 calories (≈). That is 1 croissant, medium (57 g) of croissant, using the USDA reference value of 406 calories per 100 g.

How many calories are in 100 grams of croissant?

About 406 calories (≈). One ounce (28 g) is about 115 calories.

How much protein is in croissant?

8.2 g per 100 g, and about 8% of its calories come from protein (≈). A portion of 1 croissant, medium has about 4.7 g.

Source

  • USDA FoodData Central, SR Legacy: Croissants, butter (FDC ID 174987)
  • U.S. Department of Agriculture, Agricultural Research Service. FoodData Central. fdc.nal.usda.gov
  • Harvard Health: calories burned in 30 minutes for people of three different weights

General information, not medical advice. Nutrient values are estimates and vary by product and portion.

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© 2026 CaloLiftFood data: USDA FoodData Central