Blueberries Calories & Carbs
Last updated September 8, 2026 · Compiled by the CarbMeNot Team
Values per 1 cup (148g); per 100 g: 12.1g net carbs, 14 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 blueberries?
Blueberries — 1 cup (148g) — has 17.9g net carbs: 21.5g total carbs minus 3.6g fiber, plus 1g protein, 0.4g fat, and 21 calories. Per 100g that is 12.1g net carbs (14.5g total carbs, 2.4g fiber) and 14 calories. That makes blueberries moderate in net carbs and lower than the typical fruit, which averages about 17.3g net carbs per 100g. At this carb count, blueberries is best limited to small portions on keto (usually 20–50g net carbs per day). Values are per 100 g, sourced from Open Food Facts; net carbs are computed by CarbMeNot.
Is blueberries keto-friendly?
Blueberries is generally not keto-friendly. 1 cup (148g) is 17.9g net carbs (21.5g total carbs − 3.6g fiber); per 100g that is 12.1g 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 blueberries?
Blueberries 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 cup | 17.9g | 21.5g | 1g | 21 |
| 100 g (3.5 oz) | 12.1g | 14.5g | 0.7g | 14 |
| 1 oz (28 g) | 3.4g | 4.1g | 0.2g | 4 |
How many calories are in blueberries?
Blueberries — 1 cup (148g) — has 21 calories, with 1g protein, 0.4g fat, and 17.9g net carbs. Per 100g: 14 calories and 12.1g net carbs.
Nutrition facts
| Nutrient | Amount (per 100 g) |
|---|---|
| Calories | 14 |
| Total carbs | 14.5g |
| Net carbs | 12.1g |
| Fiber | 2.4g |
| Sugar | 9.9g |
| Sugar alcohols | 0g |
| Protein | 0.7g |
| Fat | 0.3g |
| Sodium | 1mg |
| Potassium | 0mg |
Source: Open Food Facts (USDAHouston Food bank). Net carbs = total carbs − fiber − sugar alcohols, computed by CarbMeNot.
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Frequently asked questions
- How many carbs are in blueberries?
- Blueberries (1 cup, 148g) has 21.5g of total carbs and 17.9g of net carbs. Per 100 grams: 14.5g total, 12.1g net.
- How many net carbs are in blueberries?
- Blueberries has 17.9g of net carbs per 1 cup (148g) — 21.5g total carbs minus 3.6g fiber.
- Is blueberries keto-friendly?
- Blueberries is generally not keto-friendly. 1 cup (148g) is 17.9g net carbs (21.5g total carbs − 3.6g fiber); per 100g that is 12.1g 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 blueberries?
- Blueberries (1 cup, 148g) has 21 calories; that is 14 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.