Carbs in Cucumber 1 Cup

Keto-friendly

How many carbs are in cucumber 1 cup?

Cucumber 1 Cup has 1.5g net carbs per 100g — 2.2g total carbs minus 0.7g fiber — plus 0.6g protein, 0.2g fat, and 10 calories. That makes cucumber 1 cup very low in net carbs and lower than the typical vegetable, which averages about 17.9g net carbs per 100g. With this carb count, cucumber 1 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 USDA FoodData Central; net carbs are computed by CarbMeNot.

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Last updated June 10, 2026 · Reviewed by Jordan Lee, Nutrition Editor

Cucumber 1 Cup
1.5g
Net carbs
2.2g
Total carbs
0.7g
Fiber
0.6g
Protein
0.2g
Fat
10
Calories

Values per 100 g.

Is cucumber 1 cup keto-friendly?

Yes

Yes — cucumber 1 cup is keto-friendly. It has 1.5g net carbs per 100g (2.2g total carbs − 0.7g fiber). 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

ServingNet carbsTotal carbsCalories
100 g (3.5 oz)1.5g2.2g10
1 oz (28 g)0.4g0.6g3

How many calories are in cucumber 1 cup?

Cucumber 1 Cup has 10 calories per 100g. That's alongside 0.6g protein, 0.2g fat, and 1.5g net carbs per 100g.

Nutrition facts

NutrientAmount (per 100 g)
Calories10
Total carbs2.2g
Net carbs1.5g
Fiber0.7g
Sugar1.4g
Sugar alcohols0g
Protein0.6g
Fat0.2g
Sodium2mg
Potassium136mg

Source: USDA FoodData Central (SR Legacy). Net carbs = total carbs − fiber − sugar alcohols, computed by CarbMeNot.

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Frequently asked questions

How many carbs are in cucumber 1 cup?
Cucumber 1 Cup has 2.2g of total carbs and 1.5g of net carbs per 100 grams.
How many net carbs are in cucumber 1 cup?
Cucumber 1 Cup has 1.5g of net carbs per 100 grams (total carbs 2.2g minus 0.7g fiber).
Is cucumber 1 cup keto-friendly?
Yes — cucumber 1 cup is keto-friendly. It has 1.5g net carbs per 100g (2.2g total carbs − 0.7g fiber). 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 1 cup?
Cucumber 1 Cup has 10 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.