Butter Croissant
The smell of a fresh French butter croissant in the morning is irresistible and a much-loved start to the day, but the most common question is: does it raise blood sugar quickly? The answer is yes; the mix of refined white flour and layers of butter makes its carbohydrate absorbed relatively fast, with a glycemic index of 67, which can give instant energy followed by a quick dip and early hunger.
Glycemic index
Glycemic load
Calories
Protein
💡 Smart Nutritional Guidance
Consumption advice
Don't make a croissant your only breakfast on an empty stomach; always pair it with a filling protein such as a boiled egg or a slice of natural cheese, and swap juices and sweetened drinks for black coffee or warm tea without sugar.
Best preparation methods
Warming the croissant in the oven for a few minutes brings out the natural butter flavour and helps you be satisfied with half or one small croissant, eaten slowly and with enjoyment rather than in a rush.
Important Nutritional Note
If you watch your blood sugar or are managing your weight, enjoy croissants as a planned weekly exception and focus on protein for steady fullness all morning.
Nutrition facts
| Nutrient | Per 100 g | Per typical portion (60 g) |
|---|---|---|
| Calories | 406 kcal | 243.6 kcal |
| Protein | 8 g | 4.8 g |
| Carbohydrate | 46 g | 27.6 g |
| Available carbohydrate | 43.4 g | 26 g |
| Fat | 21 g | 12.6 g |
| Dietary fibre | 2.6 g | 1.6 g |
The typical portion is approximate, for comparison purposes.
Comparison & smarter alternatives
Among the foods in Sweets & desserts with a glycemic index (11), it ranks 8 (lowest first).
Lower-GI alternatives:
Frequently asked questions
Is Butter Croissant good for weight loss?
Butter Croissant provides 406 kcal per 100 g, so it is high in calories and fits a weight-loss plan only in small, measured amounts; a 60 g portion gives 244 kcal.
How does Butter Croissant affect blood sugar?
Its glycemic index is 67 (Medium), a clinically reviewed estimate rather than a laboratory measurement. A typical 60 g portion has a glycemic load of 17.4 (Medium), so it is best combined with protein or fibre-rich vegetables.
What is the nutritional value of a typical portion of Butter Croissant?
A typical 60 g portion of Butter Croissant provides about 244 kcal, 4.8 g protein, 27.6 g carbohydrate, 12.6 g fat and 1.6 g fibre.
Reviewed by the WiBo Health medical team · Last reviewed 13 October 2026
Disclaimer: This guidance is for nutritional lifestyle orientation and does not constitute a diagnostic medical device under EU Regulation MDR 2017/745.