Cucumber calories & macros
15 calories per 100 g · 16 calories per 1 cup sliced (104 g). Cucumber (raw, with peel).
At 15 calories per 100 g, cucumber is about as close to free as food gets — a full cup of slices is 16 calories. It is roughly 95% water, so its job is volume and crunch rather than nutrition. Keep the peel on: most of the (modest) fiber and the vitamin K live there.
Full nutrition facts
| Nutrient | Per 100 g | Per 1 cup sliced (104 g) |
|---|---|---|
| Calories | 15 | 16 |
| Protein | 0.7 g | 0.7 g |
| Carbohydrate | 3.6 g | 3.7 g |
| Fat | 0.1 g | 0.1 g |
| Fiber | 0.5 g | 0.5 g |
| Sugar | 1.7 g | 1.8 g |
Source: USDA FoodData Central (Cucumber, with peel, raw). Values are for the edible portion and vary with variety, ripeness, and preparation.
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Put cucumber in context
- Work out your daily budget with the TDEE calculator or plan a cut with the calorie-deficit calculator.
- Logging feels like a chore? How to count calories without weighing food.
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Frequently asked
How many calories in a whole cucumber?
A large cucumber (about 300 g) is roughly 45 calories. Even eating the entire thing barely registers on a daily total.
Is cucumber good for weight loss?
It is genuinely useful for adding bulk to meals for almost no calories. It offers little protein or fiber, so treat it as a way to make a plate bigger rather than a source of fullness on its own.