Carbs in Cucumber (Medium, Whole)
Keto-friendlyHow many carbs are in cucumber (medium, whole)?
Cucumber (Medium, Whole) has 3g net carbs per 100g — 3.7g total carbs minus 0.7g fiber — plus 0.7g protein, 0g fat, and 15 calories. 1 medium cucumber (300g) works out to about 9g net carbs and 45 calories. That makes cucumber (medium, whole) relatively low in net carbs and lower than the typical vegetable, which averages about 17.9g net carbs per 100g. With this carb count, cucumber (medium, whole) 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 cucumber (medium, whole) keto-friendly?
Yes, cucumber (medium, whole) can fit a keto diet in moderate portions. It has 3g net carbs per 100g (3.7g total carbs − 0.7g fiber). A typical serving — 1 medium cucumber (300g) — is about 9g net carbs. On a standard keto diet (20–50g net carbs per day), that leaves plenty of room for other vegetables and meals.
Carbs by serving size
| Serving | Net carbs | Total carbs | Protein | Calories |
|---|---|---|---|---|
| 1 medium cucumber | 9g | 11.1g | 2.1g | 45 |
| 100 g (3.5 oz) | 3g | 3.7g | 0.7g | 15 |
| 1 oz (28 g) | 0.8g | 1g | 0.2g | 4 |
How many calories are in cucumber (medium, whole)?
Cucumber (Medium, Whole) has 15 calories per 100g. 1 medium cucumber (300g) has about 45 calories. That's alongside 0.7g protein, 0g fat, and 3g net carbs per 100g.
Nutrition facts
| Nutrient | Amount (per 100 g) |
|---|---|
| Calories | 15 |
| Total carbs | 3.7g |
| Net carbs | 3g |
| Fiber | 0.7g |
| Sugar | 1.7g |
| Sugar alcohols | 0g |
| Protein | 0.7g |
| Fat | 0g |
| Sodium | 2mg |
| Potassium | 147mg |
Source: Manufacturer-reported values (vegetables). Net carbs = total carbs − fiber − sugar alcohols, computed by CarbMeNot.
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Frequently asked questions
- How many carbs are in cucumber (medium, whole)?
- Cucumber (Medium, Whole) has 3.7g of total carbs and 3g of net carbs per 100 grams.
- How many net carbs are in cucumber (medium, whole)?
- Cucumber (Medium, Whole) has 3g of net carbs per 100 grams (total carbs 3.7g minus 0.7g fiber).
- Is cucumber (medium, whole) keto-friendly?
- Yes, cucumber (medium, whole) can fit a keto diet in moderate portions. It has 3g net carbs per 100g (3.7g total carbs − 0.7g fiber). A typical serving — 1 medium cucumber (300g) — is about 9g net carbs. On a standard keto diet (20–50g net carbs per day), that leaves plenty of room for other vegetables and meals.
- How many calories are in cucumber (medium, whole)?
- Cucumber (Medium, Whole) has 15 calories per 100 grams.
- How many carbs are in 1 medium cucumber?
- 1 medium cucumber (300g) has about 9g net carbs, 11.1g total carbs, and 45 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.