Calories in a Cucumber: Full Nutrition Breakdown
How many calories are in a cucumber? Size-by-size breakdown with full nutrition facts and FAQ.
Cucumbers are one of the most hydrating and low-calorie vegetables available. Composed of about 96% water, they are an excellent choice for staying hydrated and adding volume to meals without adding significant calories. Cucumbers provide vitamin K, small amounts of vitamin C and potassium, and contain antioxidants including flavonoids and tannins. Here is a complete breakdown of cucumber nutrition by size.
Calories by size:
| Size | Weight | Calories | Carbs | Fiber | Vitamin K | Water |
|---|---|---|---|---|---|---|
| Whole (8.25 inches) | ~301 g | 45 kcal | 11 g | 1.5 g | 49 mcg | 289 g |
| Half | ~150 g | 23 kcal | 5.5 g | 0.8 g | 24 mcg | 144 g |
| 1 cup sliced | ~119 g | 16 kcal | 3.1 g | 0.5 g | 17 mcg | 115 g |
| 1 cup chopped | ~133 g | 16 kcal | 3.8 g | 0.7 g | 19 mcg | 128 g |
| Mini cucumber (1) | ~100 g | 15 kcal | 3.6 g | 0.5 g | 16 mcg | 96 g |
Cucumbers are also a source of magnesium, manganese, and contain the lignans lariciresinol, pinoresinol, and secoisolariciresinol, which may have cardiovascular benefits.
Frequently Asked Questions (FAQ)
How many calories are in a whole cucumber?
A whole standard cucumber about 8.25 inches long and weighing roughly 301 grams contains approximately 45 calories. Cucumbers are among the lowest-calorie whole foods available, making them an ideal snack for anyone managing their calorie intake.
Are cucumbers mostly water?
Yes, cucumbers are about 96% water by weight, making them one of the most hydrating foods you can eat. A whole cucumber contains roughly 289 grams of water. Eating cucumbers can contribute meaningfully to your daily fluid intake, especially during hot weather or after exercise.
Should you eat cucumber with or without the peel?
Eating cucumbers with the peel is more nutritious. The peel contains most of the fiber, vitamin K, and antioxidants. Peeling a cucumber removes about half of its total vitamin K and most of its fiber. If you are concerned about pesticide residue, choose organic cucumbers or wash them thoroughly before eating with the skin on.
Are cucumbers good for weight loss?
Cucumbers are one of the best foods for weight loss. With only about 15 calories per cup, they provide bulk and hydration that helps you feel full. Replacing higher-calorie snacks with cucumbers can significantly reduce daily calorie intake while still providing a satisfying crunch and freshness.
Do cucumbers have any significant vitamins or minerals?
While cucumbers are not as nutrient-dense as darker green vegetables, they do provide useful amounts of vitamin K (about 62% of the daily value in a whole cucumber), some vitamin C, potassium, and magnesium. They also contain unique anti-inflammatory compounds called cucurbitacins that are being studied for potential health benefits.
How many calories are in a whole cucumber?
Are cucumbers mostly water?
Should you eat cucumber with or without the peel?
Are cucumbers good for weight loss?
Do cucumbers have any significant vitamins or minerals?
Ready to Transform Your Nutrition Tracking?
Join thousands who have transformed their health journey with Nutrola!
