Half a Bagel Calories & Carbs
Last updated September 8, 2026 · Compiled by the CarbMeNot Team
Values per 1/2 plain bagel (57g), 57g; per 100 g: 47g net carbs, 251 cal. Net carbs = total carbs − fiber − sugar alcohols — do the math for any label with the free net carbs calculator.
How many carbs are in half a bagel?
Half a Bagel — 1/2 plain bagel (57g), 57g — has 26.8g net carbs: 28g total carbs minus 1.2g fiber, plus 5.5g protein, 0.8g fat, and 143 calories. Per 100g that is 47g net carbs (49.1g total carbs, 2.1g fiber) and 251 calories. That makes half a bagel high in net carbs and about average for the typical breads and grain, which averages about 44.7g net carbs per 100g. At this carb count, half a bagel is best limited to small portions on keto (usually 20–50g net carbs per day). Values are per 100 g, sourced from Manufacturer-reported values; net carbs are computed by CarbMeNot.
Is half a bagel keto-friendly?
Half a Bagel is generally not keto-friendly. 1/2 plain bagel (57g), 57g is 26.8g net carbs (28g total carbs − 1.2g fiber); per 100g that is 47g net carbs. On a standard keto diet (20–50g net carbs per day), even one serving uses a large share of your daily carbs, so keep portions small or save it for a higher-carb day.
Keeping an eye on carbs in half a bagel?
Half a Bagel runs higher in carbs, so portions matter. CarbMeNot tracks every gram from a photo, so you stay under your daily limit without the math.
Carbs by serving size
| Serving | Net carbs | Total carbs | Protein | Calories |
|---|---|---|---|---|
| 1/2 plain bagel (57g) | 26.8g | 28g | 5.5g | 143 |
| 100 g (3.5 oz) | 47g | 49.1g | 9.6g | 251 |
| 1 oz (28 g) | 13.2g | 13.7g | 2.7g | 70 |
How many calories are in half a bagel?
Half a Bagel — 1/2 plain bagel (57g), 57g — has 143 calories, with 5.5g protein, 0.8g fat, and 26.8g net carbs. Per 100g: 251 calories and 47g net carbs.
Nutrition facts
| Nutrient | Amount (per 100 g) |
|---|---|
| Calories | 251 |
| Total carbs | 49.1g |
| Net carbs | 47g |
| Fiber | 2.1g |
| Sugar | 5.3g |
| Sugar alcohols | 0g |
| Protein | 9.6g |
| Fat | 1.4g |
| Sodium | 486mg |
| Potassium | 126mg |
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 half a bagel?
- Half a Bagel (1/2 plain bagel (57g), 57g) has 28g of total carbs and 26.8g of net carbs. Per 100 grams: 49.1g total, 47g net.
- How many net carbs are in half a bagel?
- Half a Bagel has 26.8g of net carbs per 1/2 plain bagel (57g), 57g — 28g total carbs minus 1.2g fiber.
- Is half a bagel keto-friendly?
- Half a Bagel is generally not keto-friendly. 1/2 plain bagel (57g), 57g is 26.8g net carbs (28g total carbs − 1.2g fiber); per 100g that is 47g net carbs. On a standard keto diet (20–50g net carbs per day), even one serving uses a large share of your daily carbs, so keep portions small or save it for a higher-carb day.
- How many calories are in half a bagel?
- Half a Bagel (1/2 plain bagel (57g), 57g) has 143 calories; that is 251 calories per 100 grams.
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CarbMeNot provides general nutrition information, not medical advice. Values are estimates — verify before relying on them for any health decision. See our Medical Disclaimer.