How many carbs are in a donut?
A medium cake donut (45g) has about 23g of carbohydrate and 22g of net carbs. Glazed and filled donuts run higher.
Carbs by portion
| Portion | Total carbs | Fiber | Net carbs |
|---|---|---|---|
| 1 medium cake donut (45g) | 22.9g | 0.7g | 22.2g |
| 1 oz (28g) | 14.4g | 0.4g | 14.0g |
| 100 grams | 50.8g | 1.5g | 49.3g |
Net carbs
A medium cake donut has about 22g of net carbs, which is total carbs (23g) minus fiber (0.7g). The fiber is low because donuts are made from refined white flour. See the net carbs guide for when net carbs are useful to track.
Glycemic index of a donut
The glycemic index of a donut is about 76. Donuts have a high glycemic index because they are made from refined white flour and sugar with minimal fiber to slow digestion. The fat content slows things slightly, but the spike is still rapid.
For diabetes
A medium cake donut has about 23g of carbs and a high glycemic index, meaning the blood sugar rise is fast. A glazed yeast donut at 75 to 80g can reach 35 to 45g of carbs. Filled donuts with cream or jam add 10 to 20g more. For people dosing insulin, the fat in a donut can create a delayed secondary spike 2 to 3 hours after eating. See the diabetes carb-counting guide.
Keto and low carb
A medium cake donut has about 22g of net carbs, nearly a full day's keto budget. Donuts do not fit keto in standard form. Keto versions made with almond flour and sugar substitutes typically run 3 to 6g of net carbs.
Good to know
Donut types vary significantly. A medium cake donut (45g) is the smallest standard option at about 23g of carbs. A glazed yeast donut is larger and lighter in texture, running about 35g of carbs. A filled donut with jelly or bavarian cream can reach 45 to 55g of carbs depending on the filling. Donut holes are small but easy to undercount: five holes weigh about 55g and carry roughly 30g of carbs.
Full nutrition (per 100g)
- Calories: 426.0 kcal
- Carbohydrate: 50.8g
- Fiber: 1.5g
- Sugars: n/ag
- Protein: 5.2g
- Fat: 22.9g
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Get the appFrequently asked questions
How many carbs are in a donut?
A medium plain cake donut (45g) has about 23g of carbs. A glazed yeast donut or a filled donut runs 35 to 55g of carbs.
How many carbs in a glazed donut?
A standard glazed yeast donut weighs about 75 to 80g and has roughly 35 to 45g of carbs, depending on the size and thickness of the glaze.
Is a donut keto?
No. A medium donut has about 22g of net carbs, close to a full daily keto budget. Keto-adapted donuts made with almond flour can bring that under 5g.
How many carbs are in donut holes?
Each donut hole is about 11g and has roughly 6g of carbs. Five holes add up to about 30g of carbs.
How many carbs are in a filled donut?
A cream-filled or jelly-filled donut weighs about 100 to 120g and typically has 45 to 55g of carbs, with the filling adding 10 to 20g on top of the dough.