Calories in Cucumber

8kcal per 1/2 cup, sliced (52 g)

15 kcal per 100 g · about 0% of a 2,000-kcal day

Cucumber is one of the lowest-calorie foods that exists — you would need to eat over six whole cucumbers to reach 300 calories.

Cucumber nutrition facts

NutrientPer 100 gPer 1/2 cup, sliced
Calories15 kcal8 kcal
Protein0.7 g0.4 g
Carbs3.6 g1.9 g
Fat0.1 g0.1 g
Fiber0.5 g0.3 g
Sugar1.7 g0.9 g

Where the calories come from

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Values based on USDA FoodData Central reference entries. Actual nutrition varies with variety, preparation, and portion. © 2026 NibbleCal.