TempoLife › Calorie database › Vegetables › Cucumber
Cucumber calories and nutrition facts
100 grams of cucumber contains 15 calories, with 0.7 g of protein, 3.6 g of carbohydrate and 0.1 g of fat. It provides 0.5 g of fiber and 1.7 g of sugar per 100 g. Most of its calories come from carbohydrate.
Cucumber is the lightest food most people regularly eat — 96% water, with half a cucumber costing about 15 calories. Its role in a diet is volume, crunch and the feeling of having eaten something. The dressing or dip alongside it is the only number worth watching.
Where the calories come from
Protein 15% Carbs 80% Fat 5%
How cucumber compares
Per 100 g, against the closest vegetables in this database.
| Food | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|
| Cucumber | 15 kcal | 0.7 g | 3.6 g | 0.1 g |
| Tomatoes with green chilies, canned | 15 kcal | 0.7 g | 3.6 g | 0.1 g |
| Radish, raw | 16 kcal | 0.7 g | 3.4 g | 0.1 g |
| Taro shoots, cooked | 14 kcal | 0.7 g | 3.2 g | 0.1 g |
| Pumpkin flowers, raw | 15 kcal | 1 g | 3.3 g | 0.1 g |
Nutrition facts for cucumber
| Nutrient | Per 100 g | Per half a cucumber |
|---|---|---|
| Calories | 15 kcal | 16 kcal |
| Protein | 0.7 g | 1 g |
| Carbohydrate | 3.6 g | 4 g |
| Fat | 0.1 g | 0 g |
| Fiber | 0.5 g | 1 g |
| Sugar | 1.7 g | 2 g |
| Saturated fat | 0 g | 0 g |
| Salt | 0 g | 0 g |
Print an EU-style nutrition label for cucumber — per 100 g and per portion.
Vitamins and minerals in cucumber
Per 100 g, highest share of the Daily Value first. %DV = the adult Daily Value (FDA reference). USDA reference data — not medical advice.
| Nutrient | Per 100 g | %DV |
|---|---|---|
| Vitamin K | 16.4 µg | 14% |
| Copper | 0.04 mg | 4% |
| Magnesium | 13 mg | 3% |
| Potassium | 147 mg | 3% |
| Manganese | 0.08 mg | 3% |
| Vitamin C | 2.8 mg | 3% |
| Thiamin (B1) | 0.03 mg | 3% |
| Iron | 0.28 mg | 2% |
See the richest foods per nutrient in the nutrient toplists.
Calories in common cucumber servings
How many calories in a portion of cucumber — reference serving estimates with the gram weight shown.
| Serving | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|
| ½ cup slices (52 g) | 8 kcal | 0 g | 2 g | 0 g |
| 100 g (100 g) | 15 kcal | 1 g | 4 g | 0 g |
| 1 cucumber (301 g) | 45 kcal | 2 g | 11 g | 0 g |
Log cucumber in one tap
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Related guides
Frequently asked questions
How many calories are in cucumber?
Cucumber has 15 calories per 100 grams. A typical serving of half a cucumber (104 g) has about 16 calories.
How much protein is in cucumber?
Cucumber contains 0.7 g of protein per 100 g, or about 1 g per half a cucumber.
How much sugar is in cucumber?
Cucumber contains 1.7 g of sugar per 100 g. Nutrition values are reference figures; brands and preparation change the real amount, so weigh and log what you actually eat.
Is cucumber low in carbs?
Yes by the numbers: Cucumber has 3.6 g of carbohydrate per 100 g. People following low-carb or keto approaches often include foods in this range — portion size and your own plan still decide.
Is cucumber low in calories?
Compared with other vegetables it is: 15 kcal per 100 g versus a category median of 32 kcal.
Are these cucumber calories exact?
No. These are per-100-gram reference values from the USDA FoodData Central SR Legacy source family. Portion size, ripeness, cut and cooking method all change the real number, so treat them as an estimate and log your own portion.
Related foods
Source: USDA FoodData Central SR Legacy #168409 (2018-04 release). US Government work — public domain in the United States. Reference values per 100 g edible portion.
