Food calories · USDA data
Calories in a cucumber
45 calories
in 1 cucumber (8-1/4"), 301 g
- Protein
- 2 g
- Carbs
- 10.9 g
- Fat
- 0.3 g
- Fiber
- 1.5 g
A cucumber has 45 calories. That is USDA's figure for 1 cucumber (8-1/4"), which weighs 301 g. Per 100 g, cucumber has 15 calories.
Almost all of its calories, 80%, come from carbohydrate.
It takes 667 g of cucumber to reach 100 calories, which is about 2.2 × 1 cucumber (8-1/4").
Calories by portion
| Portion | Weight | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|---|
| 1 cucumber (8-1/4") | 301 g | 45 | 2 g | 10.9 g | 0.3 g |
| ½ cup slices | 52 g | 8 | 0.3 g | 1.9 g | 0.1 g |
| 1 oz | 28.3 g | 4 | 0.2 g | 1 g | 0 g |
| 100 g | 100 g | 15 | 0.7 g | 3.6 g | 0.1 g |
Portion weights are USDA's own. Your cucumber may weigh more or less; for an exact number, weigh it and enter the grams in the food calorie lookup.
Where the calories come from
- Protein: 14% of calories (0.7 g per 100 g)
- Carbohydrate: 80% (3.6 g per 100 g, of which 0.5 g fiber)
- Fat: 5% (0.1 g per 100 g)
Shares use the general factors of 4 calories per gram of protein and carbohydrate and 9 per gram of fat, so they can differ a little from USDA's calorie figure. Daily Values are the FDA's adult Daily Values.
Compared with similar foods
Weight for weight, celery has the fewest calories of these four (14 per 100 g) and romaine lettuce the most (17).
| Per 100 g | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|
| Cucumber | 15 | 0.7 g | 3.6 g | 0.1 g |
| Celery | 14 | 0.7 g | 3 g | 0.2 g |
| Iceberg lettuce | 14 | 0.9 g | 3 g | 0.1 g |
| Romaine lettuce | 17 | 1.2 g | 3.3 g | 0.3 g |
Work out your own portion
The food calorie lookup has 3,070 foods. Pick a portion or type a weight in grams or ounces, then add foods to a plate to see the total for a meal. To see how a meal fits your day, the calorie calculator works out your daily calories.
Questions people ask
How many calories is in a cucumber?
A cucumber has 45 calories. USDA weighs 1 cucumber (8-1/4") at 301 g, and cucumber has 15 calories per 100 g.
How much protein does a cucumber have?
1 cucumber (8-1/4") (301 g) has 2 g of protein, 4% of the 50 g Daily Value. Per 100 g it is 0.7 g.
How many carbs does a cucumber have?
1 cucumber (8-1/4") has 10.9 g of carbohydrate, including 1.5 g of fiber, and 0.3 g of fat.
Source: USDA FoodData Central, SR Legacy (2018). USDA entry: Cucumber, with peel, raw (FDC ID 168409). Values are averages; a packaged food's label may differ.