Cucumber: calories and nutrition facts
Calories in cucumber per 100 g and per typical portion, from the MacroLab food catalog.
15kcal per 100 g
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To burn these 15 calories:
- 3minWalking (5 km/h)
- 1minRunning (8 km/h)
- 2minCycling (16–19 km/h)
- 2minSwimming
Times use the MET equation for a 70 kg adult. Actual burn varies with your weight, age and pace.
Calories per portion
Common portions from the MacroLab catalog, next to the 100 g reference.
| Portion | kcal |
|---|---|
| 100 g | 15 |
| 1 piece (100 g) | 15 |
Can cucumber make you gain weight?
At 15 kcal per 100 g, this is a food with very low energy density: it takes about 667 g to reach 100 kcal.
One piece (100 g) has only 15 kcal, which is easy to fit into most days.
No single food makes you gain weight. What matters is your total calories over days and weeks compared with what you burn.
Cucumber vs other foods in “Vegetables”
It has 61% fewer calories than the average food in “Vegetables” (39 kcal per 100 g).
| Per 100 g | This food | Group average |
|---|---|---|
| Energy | 15 kcal | 39 kcal |
Related foods
Frequently asked questions
- How many calories are in 100 g of cucumber?
- 100 g has 15 kcal. That means about 667 g for every 100 kcal.
- How many calories are in one piece of cucumber?
- One piece (100 g) has 15 kcal.
Log cucumber with a photo in MacroLab
Snap your plate and MacroLab estimates calories and macros, then keeps your daily targets up to date.
Data from the MacroLab food catalog, updated September 26, 2026. Values vary by variety and brand; check the label of the product you buy.