Carbs in Hamburger Bun
How many carbs are in hamburger bun?
Hamburger Bun has 46.7g net carbs per 100g — 48.9g total carbs minus 2.2g fiber — plus 8.9g protein, 4.4g fat, and 267 calories. 1 bun (45g) works out to about 21g net carbs and 120 calories. That makes hamburger bun high in net carbs and higher than the typical fast-food item, which averages about 27.6g net carbs per 100g. At this carb count, hamburger bun is best limited to small portions on keto (usually 20–50g net carbs per day). Values are per per 100 g, sourced from Manufacturer-reported values; net carbs are computed by CarbMeNot.
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Free · no signup · ★ 4.7Last updated June 10, 2026 · Reviewed by Jordan Lee, Nutrition Editor
Values per 100 g.
Carbs by serving size
| Serving | Net carbs | Total carbs | Protein | Calories |
|---|---|---|---|---|
| 1 bun | 21g | 22g | 4g | 120 |
| 100 g (3.5 oz) | 46.7g | 48.9g | 8.9g | 267 |
| 1 oz (28 g) | 13.1g | 13.7g | 2.5g | 75 |
How many calories are in hamburger bun?
Hamburger Bun has 267 calories per 100g. 1 bun (45g) has about 120 calories. That's alongside 8.9g protein, 4.4g fat, and 46.7g net carbs per 100g.
Nutrition facts
| Nutrient | Amount (per 100 g) |
|---|---|
| Calories | 267 |
| Total carbs | 48.9g |
| Net carbs | 46.7g |
| Fiber | 2.2g |
| Sugar | 6.7g |
| Sugar alcohols | 0g |
| Protein | 8.9g |
| Fat | 4.4g |
| Sodium | 458mg |
| Potassium | 111mg |
Source: Manufacturer-reported values (bread-grains). Net carbs = total carbs − fiber − sugar alcohols, computed by CarbMeNot.
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Frequently asked questions
- How many carbs are in hamburger bun?
- Hamburger Bun has 48.9g of total carbs and 46.7g of net carbs per 100 grams.
- How many net carbs are in hamburger bun?
- Hamburger Bun has 46.7g of net carbs per 100 grams (total carbs 48.9g minus 2.2g fiber).
- Is hamburger bun keto-friendly?
- Hamburger Bun has 46.7g net carbs per 100g, which is high for keto. Enjoy it in small portions or save it for higher-carb days.
- How many calories are in hamburger bun?
- Hamburger Bun has 267 calories per 100 grams.
- How many carbs are in 1 bun of hamburger bun?
- 1 bun of hamburger bun (45g) has about 21g net carbs, 22g total carbs, and 120 calories.
