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How Many Calories In A Cucumber? The Complete Nutrition Guide

Mar 10, 2026 • minute read

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Have you ever wondered how many calories are actually in a cucumber? If you're watching your weight or just trying to eat healthier, this humble green vegetable might be one of the most misunderstood foods in your kitchen. Let's dive deep into the nutritional profile of cucumbers and discover why they're such a fantastic addition to any diet.

The Calorie Breakdown: How Many Calories Are in Different Cucumber Portions?

When it comes to calorie counting, cucumbers are incredibly friendly. Let's break down the numbers:

A half cup of sliced cucumber (52g), with the peel, provides just 8 calories. That's right - you can enjoy a generous serving of this crunchy vegetable for practically nothing in terms of calories. This portion also contains 0.3g of protein, 1.9g of carbohydrates, and 0.1g of fat.

If you're eating a whole cucumber, one medium cucumber (about 180g) contains approximately 27 calories. This is based on the fact that 100g of raw cucumber contains only 15 calories. So, for an average-sized cucumber weighing around 180 grams, you're looking at roughly 27 calories total.

For those who prefer larger portions, an entire cucumber (typically 8.25 inches long or about 300 grams) contains only 45 calories. This means you could eat an entire cucumber as a snack and consume fewer calories than in a single cookie!

Understanding Cucumber Nutrition: More Than Just Low Calories

While calories are important, cucumbers offer much more than just being low in calories. Let's explore their complete nutritional profile:

Macronutrient Composition

The macronutrient breakdown of cucumbers is quite interesting. The macronutrient breakdown is 80% carbs, 5% fat, and 14% protein when looking at the overall composition. However, this can vary slightly depending on the source and preparation method.

Another breakdown shows 12% fat, 69% carbs, and 19% protein - these variations often occur due to different measurement methods or cucumber varieties.

Essential Vitamins and Minerals

Cucumbers are a good source of potassium and vitamins K and C. In fact, this is a good source of potassium (9% of your daily value) and vitamin K (41% of your daily value). This makes cucumbers particularly valuable for maintaining healthy blood pressure and supporting bone health.

Hydration Benefits

Cucumbers are 96% water, which explains their incredibly low calorie content. This high water content means they're not only hydrating but also quite filling, despite their minimal calorie count. The combination of water and fiber makes cucumbers excellent for promoting feelings of fullness without contributing many calories to your daily intake.

Cucumber in Various Forms and Preparations

Raw Cucumber Nutrition

According to the USDA, 100 grams of raw cucumber contains only 15 calories. This makes raw cucumber one of the lowest-calorie vegetables available. You can enjoy it in various forms:

1 slice: Minimal calories (less than 1)
1 stick, 4" long: Approximately 3-4 calories
1/2 cup slices: About 8 calories
1 large cucumber: Around 34 calories

Cucumber Juice and Beverages

Discover cucumber juice benefits, including hydration, digestion, and weight support. Cucumber juice has become increasingly popular as a health beverage. To make cucumber juice, simply blend or juice fresh cucumbers with a bit of water. The resulting drink is refreshing, hydrating, and incredibly low in calories.

Learn how to juice cucumber and the health benefits of cucumber juice. The process is straightforward - wash the cucumber thoroughly, chop it into pieces, and process it through a juicer or blender. Strain if desired, and enjoy immediately for maximum nutritional benefits.

Cucumber in Cocktails and Mixed Drinks

Nutrition values, how many vitamins, how many minerals does have elderflower & cucumber crush frozen vodka cocktail. While pure cucumber is very low in calories, adding it to alcoholic beverages changes the nutritional profile significantly.

How many calories are in Kettle One Botanicals? When cucumber is combined with alcoholic beverages, the calorie count increases substantially. However, the good news is, they are relatively low in calories compared to many other alcoholic beverages. For instance, per 1.5 oz (44ml) serving of cucumber-infused spirits, you'll typically find a moderate calorie count that's still lower than many alternatives.

Cucumber in Popular Dishes

Sushi and Cucumber Rolls

Overall, the calorie count of a mango salmon roll is relatively moderate compared to other sushi rolls. When cucumber is used in sushi rolls, it adds minimal calories while contributing significant volume and crunch. A cucumber roll typically contains only 100-150 calories for an entire roll, making it one of the healthiest sushi options available.

Cucumber as a Weight Management Tool

This means you can eat plenty of cucumbers without packing on the extra calories that lead to weight gain. The extremely low calorie content combined with high water and fiber content makes cucumbers perfect for weight management. You could literally eat an entire cucumber as a snack and only consume 45 calories - that's less than many people consume in a single bite of other foods!

Health Benefits Beyond Calories

While we've focused heavily on calorie content, cucumbers offer numerous other health benefits:

Hydration: With 96% water content, cucumbers are excellent for maintaining proper hydration levels.
Digestive Health: The fiber content supports healthy digestion and regular bowel movements.
Skin Health: The vitamins and high water content contribute to healthy, glowing skin.
Blood Pressure Support: The potassium content helps regulate blood pressure.
Bone Health: Vitamin K is essential for bone health and proper blood clotting.

Practical Tips for Incorporating Cucumbers

Now that you understand the nutritional profile of cucumbers, here are some practical ways to incorporate them into your diet:

Snacking: Keep sliced cucumbers in your refrigerator for quick, low-calorie snacks
Salads: Add cucumbers to any salad for extra crunch and hydration
Sandwiches and Wraps: Use cucumber slices as a low-calorie filler
Infused Water: Add cucumber slices to your water for a refreshing, spa-like beverage
Gazpacho: Use cucumbers as a base for cold soups
Pickles: While pickling adds sodium, it's still a low-calorie way to enjoy cucumbers

Conclusion

So, how many calories are in a cucumber? The answer varies depending on size and preparation, but generally ranges from 8 calories for a half-cup serving to 45 calories for a whole medium cucumber. This incredibly low calorie content, combined with high water content, essential vitamins and minerals, and versatility in cooking, makes cucumbers one of the most diet-friendly foods available.

Whether you're trying to lose weight, maintain a healthy lifestyle, or simply enjoy delicious, nutritious food, cucumbers deserve a prominent place in your diet. Their minimal calorie impact means you can enjoy them freely without worrying about weight gain, while their nutritional benefits support overall health and wellness.

Remember, while counting calories can be helpful for weight management, focusing on nutrient-dense, whole foods like cucumbers provides benefits that go far beyond simple calorie counting. So the next time you're wondering what to snack on, reach for a cucumber - your body will thank you!

Cucumber Calories and Nutrition (100g)

Cucumber Calories