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

Cucumber calories by serving size

ServingCaloriesProteinCarbsFat
1 oz (28 g)4 kcal0.2 g1 g0 g
50 g8 kcal0.4 g1.8 g0.1 g
1/2 cup, sliced (52 g)8 kcal0.4 g1.9 g0.1 g
100 g15 kcal0.7 g3.6 g0.1 g
200 g30 kcal1.4 g7.2 g0.2 g
250 g38 kcal1.8 g9 g0.3 g

Logging cucumber the slow way?

Snap a photo of your plate and NibbleCal logs the calories and macros for you — in about 3 seconds.

Try it with a photo

Free forever plan · No credit card required

More vegetables

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