Carbs in Blackberries (1/2 Cup)
Keto-friendlyHow many carbs are in blackberries (1/2 cup)?
Blackberries (1/2 Cup) has 4.1g net carbs per 100g — 9.7g total carbs minus 5.6g fiber — plus 1.4g protein, 0g fat, and 43 calories. 1/2 cup (72g) works out to about 3g net carbs and 31 calories. That makes blackberries (1/2 cup) relatively low in net carbs and lower than the typical fruit, which averages about 17.3g net carbs per 100g. With this carb count, blackberries (1/2 cup) fits a keto or low-carb diet (usually 20–50g net carbs per day) in normal portions. Values are per per 100 g, sourced from Manufacturer-reported values; net carbs are computed by CarbMeNot.
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Last updated June 10, 2026 · Reviewed by Jordan Lee, Nutrition Editor
Values per 100 g.
Is blackberries (1/2 cup) keto-friendly?
Yes, blackberries (1/2 cup) can fit a keto diet in moderate portions. It has 4.1g net carbs per 100g (9.7g total carbs − 5.6g fiber). A typical serving — 1/2 cup (72g) — is about 3g net carbs. On a standard keto diet (20–50g net carbs per day), that leaves plenty of room for other fruits and meals.
Carbs by serving size
| Serving | Net carbs | Total carbs | Protein | Calories |
|---|---|---|---|---|
| 1/2 cup | 3g | 7g | 1g | 31 |
| 100 g (3.5 oz) | 4.1g | 9.7g | 1.4g | 43 |
| 1 oz (28 g) | 1.1g | 2.7g | 0.4g | 12 |
How many calories are in blackberries (1/2 cup)?
Blackberries (1/2 Cup) has 43 calories per 100g. 1/2 cup (72g) has about 31 calories. That's alongside 1.4g protein, 0g fat, and 4.1g net carbs per 100g.
Nutrition facts
| Nutrient | Amount (per 100 g) |
|---|---|
| Calories | 43 |
| Total carbs | 9.7g |
| Net carbs | 4.1g |
| Fiber | 5.6g |
| Sugar | 4.9g |
| Sugar alcohols | 0g |
| Protein | 1.4g |
| Fat | 0g |
| Sodium | 0mg |
| Potassium | 162mg |
Source: Manufacturer-reported values (fruits). Net carbs = total carbs − fiber − sugar alcohols, computed by CarbMeNot.
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Frequently asked questions
- How many carbs are in blackberries (1/2 cup)?
- Blackberries (1/2 Cup) has 9.7g of total carbs and 4.1g of net carbs per 100 grams.
- How many net carbs are in blackberries (1/2 cup)?
- Blackberries (1/2 Cup) has 4.1g of net carbs per 100 grams (total carbs 9.7g minus 5.6g fiber).
- Is blackberries (1/2 cup) keto-friendly?
- Yes, blackberries (1/2 cup) can fit a keto diet in moderate portions. It has 4.1g net carbs per 100g (9.7g total carbs − 5.6g fiber). A typical serving — 1/2 cup (72g) — is about 3g net carbs. On a standard keto diet (20–50g net carbs per day), that leaves plenty of room for other fruits and meals.
- How many calories are in blackberries (1/2 cup)?
- Blackberries (1/2 Cup) has 43 calories per 100 grams.
- How many carbs are in 1/2 cup of blackberries (1/2 cup)?
- 1/2 cup of blackberries (1/2 cup) (72g) has about 3g net carbs, 7g total carbs, and 31 calories.
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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.