How many carbs are in a croissant?
One medium croissant has about 26g of carbohydrate and 25g of net carbs. The butter layers add significant fat and calories but do not lower the carb count much.
Carbs by portion
| Portion | Total carbs | Fiber | Net carbs |
|---|---|---|---|
| 1 medium croissant (57g) | 26.1g | 1.5g | 24.6g |
| 1 croissant, small (42g) | 19.2g | 1.1g | 18.1g |
| 1 croissant, large (67g) | 30.7g | 1.7g | 28.9g |
| 100 grams | 45.8g | 2.6g | 43.2g |
Net carbs
One medium croissant has about 25g of net carbs, which is total carbs (26g) minus about 1g of fiber. Croissants are made from refined flour with almost no fiber. The high butter content slows digestion somewhat but does not meaningfully reduce the carbs. See the net carbs guide.
Glycemic index of a croissant
The glycemic index of a croissant is about 67. Croissants have a medium-to-high glycemic index. Despite the high fat content from butter, the refined flour still produces a significant and fairly fast glucose rise. The layered pastry structure gives a slightly lower GI than plain white bread.
For diabetes
One medium croissant is 26g of carbs with a GI of 67. It is not a dramatically worse choice than two slices of white bread, but the high fat content makes it calorie-dense and can cause a delayed secondary glucose rise in some people as the fat slows the overall meal digest. A croissant sandwich with egg and cheese adds protein which helps manage the rise better than a plain croissant. See the diabetes carb-counting guide.
Keto and low carb
One medium croissant has about 25g of net carbs, filling a full strict keto day's budget. Croissants do not fit keto. The fat in a croissant is high, but keto focuses on net carbs, and 25g per croissant is too much.
Good to know
An authentic French croissant uses a laminated dough with 27 to 81 alternating layers of butter and dough, which is what creates the flaky interior. Most American bakery and chain croissants use a slightly simplified version. A large croissant (67g) has about 31g of carbs. Almond croissants are made by splitting a day-old croissant, filling it with almond cream, and baking again, which adds sugar and more carbs to an already high base.
Full nutrition (per 100g)
- Calories: 406.0 kcal
- Carbohydrate: 45.8g
- Fiber: 2.6g
- Sugars: 11.26g
- Protein: 8.2g
- Fat: 21.0g
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Get the appFrequently asked questions
How many carbs are in a croissant?
One medium croissant (57g) has about 26g of carbohydrate. A large croissant (67g) has about 31g. A mini croissant (28g) has about 13g.
How many net carbs are in a croissant?
One medium croissant has about 25g of net carbs, which is total carbs (26g) minus about 1g of fiber.
Is a croissant high in carbs?
Yes. A medium croissant has about 26g of carbs, similar to two slices of white bread. The high butter content makes it calorie-dense but does not reduce the carb count.
Is a croissant keto?
No. One medium croissant has about 25g of net carbs, a full day's keto budget. Croissants are not compatible with keto.
Does butter in a croissant lower its glycemic index?
Slightly. Fat slows gastric emptying, which moderates the glucose rise compared to plain white bread. But the GI of 67 is still medium-to-high.