FOOD CALORIES · VEGETABLES

Calories in a cucumber

An 8-inch cucumber (301 g) has about 45 calories, with 2 g protein, 10.9 g carbohydrate, and 0.3 g fat.

USDA FoodData Central · Cucumber, with peel, raw · Updated October 8, 2026

Calories in common portions

Cucumber: calories and macros by portion
PortionWeightCaloriesProteinCarbsFat
½ cup slices52 g80.3 g1.9 g0.1 g
100 g100 g150.7 g3.6 g0.1 g
1 cup slices*104 g160.7 g3.8 g0.1 g
1 cucumber (8¼ inches)301 g452 g10.9 g0.3 g

* Calculated by Calorify from USDA’s portion weights.

Where the calories come from

Protein 14.4%Carbohydrate 80.2%Fat 5.5%

Shares use 4 calories per gram for protein and carbohydrate and 9 for fat, so they may not match USDA’s calorie total exactly. Try the macro calculator.

Good to know

  • A whole 8-inch cucumber (301 g) has about 45 calories. The 1-cup portion is twice USDA’s 52 g half cup.
  • This entry includes the peel. Peeled cucumber is a separate entry with slightly less fiber.
  • A cup of slices (104 g) has about 16 calories, which makes cucumber an easy way to add crunch and volume to a salad, wrap, or sandwich.
  • Pickles are cucumbers kept in brine or vinegar and are a separate food, usually much higher in sodium. Use the jar’s label.

In our recipes

The Calorify recipes that use this food, how much they use, and the calories it adds to each whole recipe.

Compare per 100 g

Cucumber compared with similar foods, per 100 g
FoodCaloriesProteinCarbsFat
Cucumber (this page)150.7 g3.6 g0.1 g
Broccoli342.8 g6.6 g0.4 g
Spinach232.9 g3.6 g0.4 g
Carrots410.9 g9.6 g0.2 g
Baked potato932.5 g21.2 g0.1 g
Sweet potato902 g20.7 g0.2 g
Onion401.1 g9.3 g0.1 g
Garlic1496.4 g33.1 g0.5 g
Tomato180.9 g3.9 g0.2 g
Canned tomatoes160.8 g3.5 g0.3 g
Red bell pepper261 g6 g0.3 g
Romaine lettuce171.2 g3.3 g0.3 g
Mushrooms223.1 g3.3 g0.3 g

Source

USDA FoodData Central, SR Legacy (April 2019): Cucumber, with peel, raw (FDC ID 168409) ↗. Values are per 100 g of edible portion; Calorify scaled them to each portion and rounded the results.

General education, not individualized nutrition advice. Read our editorial approach.

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