Nutrition facts
Calories in a croissant
A croissant is lighter than a pain au chocolat by the unit and practically identical at equal weight: the whole difference is the size.
What a real portion weighs
The Anses table gives values per 100 grams, and 100 grams is not a portion anybody serves. Here are the same values, applied to the portions as they turn up. Weights are in grams, the unit the table is built on. For a quick conversion: 1 oz is about 28 g, and 1 lb is about 454 g.
| Portion | Weight | Energy | Protein | Carbs | Fat | Fiber |
|---|---|---|---|---|---|---|
| One croissant · bakery size | 55 g | 231 kcal | 4 g | 25.1 g | 12.4 g | 1.4 g |
| A large croissant · a generous one | 70 g | 294 kcal | 5.1 g | 32 g | 15.8 g | 1.8 g |
| A mini croissant · buffet size | 30 g | 126 kcal | 2.2 g | 13.7 g | 6.8 g | 0.8 g |
| The Ciqual reference · pure butter, from a bakery | 100 g | 420 kcal | 7.3 g | 45.7 g | 22.6 g | 2.5 g |
These weights are usual orders of magnitude, not standardized measures: they turn a per-100-gram value into a credible portion. A kitchen scale stays more accurate than any average weight.
Composition per 100 grams
Croissant, pure butter, from bakery
- Energy
- 420 kcal
- Protein
- 7.3 g
- Carbohydrate
- 45.7 g
- of which sugars
- 7.3 g
- Fat
- 22.6 g
- Fiber
- 2.5 g
- Sodium
- 463 mg
What a table of values does not say
- A croissant usually weighs less than a pain au chocolat, which carries its bars of chocolate on top. Weight separates them, not density.
- Pure butter is a regulated mention in France and matches a separate line of the table: an ordinary croissant is made with other fats.
- No pastry in the table is light: the category is dense by construction, lamination being butter folded between layers of dough.
The Zemiam recipe that uses it
These pages carry their calories and their macros, recalculated from the same table as this one. The weight given is that of the ingredient in one serving.
- Croissant with yogurt and banana · 65 g per serving
What comes after the number
How much to eat in a day
A portion means nothing without the day that holds it. A calorie need is worked out from height, weight, age and activity level, then split into protein, carbohydrate and fat.
Calorie calculatorWhere body build sits
Body mass index, the full WHO classification, and the weight range matching a normal build for a given height.
BMI calculatorAn average weight is an estimate. A photo is not.
In Zemiam, a photo of the meal is enough to log the real portion, with the composition of this same table rather than a guessed figure.
Where the values come from
The composition comes from the Anses Ciqual table: Anses. 2025. Table de composition nutritionnelle des aliments Ciqual, published under Licence Ouverte 2.0. The per-100 g values are reproduced without being altered; the per-portion values are those same values multiplied by a weight, and that weight is not an Anses figure.
The same page in French: Calories d'un croissant.