Calories in
cucumber, with peel, raw
15 kcal per 100 g Cucumber, with peel, raw contains 15 calories per 100 grams, or about 8 calories per 0.5 cup slices. Per 100 g it provides 0.7 g protein, 3.6 g carbohydrate and 0.1 g fat.
By calories that splits 80% carbohydrate, 14% protein, 5% fat.
Calories in a typical serving
Per-100 g figures are useful for comparison but nobody eats 100 g of anything on purpose. These are the USDA's own household measures.
| Serving | Grams | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|---|
| 0.5 cup slices | 52.0 g | 8 | 0.3 g | 1.9 g | 0.1 g |
| 1 cucumber (8-1/4") | 301.0 g | 45 | 2.0 g | 10.9 g | 0.3 g |
Full nutrition, per 100 g and per 0.5 cup slices
| Nutrient | Per 100 g | Per 0.5 cup slices |
|---|---|---|
| Energy | 15 kcal | 8 kcal |
| Protein | 0.7 g | 0.3 g |
| Total fat | 0.1 g | 0.1 g |
| Saturated fat | 0.0 g | 0.0 g |
| Carbohydrate | 3.6 g | 1.9 g |
| Fibre | 0.5 g | 0.3 g |
| Sugars | 1.7 g | 0.9 g |
| Sodium | 2.0 mg | 1.0 mg |
| Potassium | 147.0 mg | 76.4 mg |
| Calcium | 16.0 mg | 8.3 mg |
| Iron | 0.3 mg | 0.1 mg |
| Vitamin C | 2.8 mg | 1.5 mg |
| Vitamin A | 5.0 µg | 2.6 µg |
| Cholesterol | 0.0 mg | 0.0 mg |
| Water | 95.2 g | 49.5 g |
USDA FoodData Central, SR Legacy (FDC ID 168409). A dash means the nutrient was not measured for this item, which is not the same as zero.
How cucumber, with peel, raw compares
Among the 209 vegetables and vegetable products items on this site, cucumber, with peel, raw ranks 190 of 209 by calorie density, against a category average of 62 kcal per 100 g — so it is about 76% less calorie-dense than typical for its group.
It carries 4.3 g of protein per 100 calories, so it is not a meaningful protein source.
To burn off 0.5 cup slices (8 kcal), a 70 kg adult would walk for roughly 2 minutes — see the walking calculation on our sister site, or pick a different activity. Treat that as a sense of scale rather than a rule: eating and moving are not a simple ledger.
Questions
How many calories are in cucumber, with peel, raw?
Cucumber, with peel, raw contains 15 calories per 100 g, which works out to about 8 calories per 0.5 cup slices. It also provides 0.7 g of protein, 3.6 g of carbohydrate and 0.1 g of fat per 100 g.
What is the macro breakdown of cucumber, with peel, raw?
By calories, cucumber, with peel, raw is roughly 80% carbohydrate, 14% protein and 5% fat. That makes it a predominantly carbohydrate-based food.
How long does it take to burn off 0.5 cup slices?
About 2 minutes of ordinary walking for a 70 kg adult (MET 4.0). That is a rough guide for scale, not a prescription — appetite and activity interact in ways a simple subtraction does not capture.
Is this figure exact for the cucumber, with peel, raw I bought?
No. These are USDA reference values, averaged across samples. Real foods vary with variety, ripeness, growing conditions, cut, brand and how they were cooked — 10–20% either way is normal. Use them for planning, not precision.
Similar foods
Closest in calorie density within vegetables and vegetable products.
Source: USDA FoodData Central, SR Legacy — public domain. Full USDA description: "Cucumber, with peel, raw". General information only — not medical or nutrition advice. Values are averages for a food type and vary by brand, ripeness and preparation.