Skip to content

How many calories are there in 100g of cucumber?

4 min read

Made up of about 96% water, 100g of raw cucumber typically contains between 12 and 16 calories, depending on whether it is peeled or left with the skin on. This remarkably low energy density makes it a staple for anyone focused on weight management and healthy, hydrating food choices.

Quick Summary

This guide provides a detailed look at the nutritional content of 100g of cucumber, including its macro and micronutrients. It also covers the health benefits of this hydrating vegetable and compares its calorie count with other common vegetables.

Key Points

  • Low in Calories: A 100g serving of cucumber contains only 12-16 calories, making it a highly energy-efficient food choice.

  • Primarily Water: Composed of up to 96% water, cucumber is exceptionally hydrating and contributes significantly to daily fluid intake.

  • Rich in Nutrients: Despite its low calorie count, cucumber provides valuable vitamins like Vitamin K and C, as well as minerals such as potassium and magnesium.

  • Peel for Extra Goodness: The cucumber peel is the most nutrient-dense part, containing beneficial fiber and antioxidants. It's best to consume it unpeeled after a good wash.

  • Aids Digestion: The high water and fiber content in cucumbers helps promote regular bowel movements and supports a healthy digestive system.

  • Supports Weight Loss: As a very low-calorie and high-water food, cucumber helps you feel full without adding many calories, assisting in weight management.

In This Article

Nutritional Breakdown: Calories and Macronutrients

When considering how many calories are there in 100g of cucumber, the answer is surprisingly low, making it one of the least calorific vegetables available. The exact number can vary slightly based on the variety and whether the peel is included, but it generally falls within a tight range. Peeled, raw cucumber provides approximately 12 calories per 100g, while unpeeled, raw cucumber offers around 15 to 16 calories for the same weight. The majority of its content is water, with a small contribution from carbohydrates and protein, and almost no fat.

Here’s a general macronutrient profile for a 100g serving of raw cucumber (with peel):

  • Calories: 16 kcal
  • Water: 95.5 g
  • Carbohydrates: 2.95 g
  • Protein: 0.62 g
  • Fat: 0.18 g
  • Fiber: 0.5 g

The Role of Water and Hydration

Cucumbers are a champion of hydration, containing up to 96% water. This high water content is what gives cucumbers their signature crisp texture and refreshing taste. It's also why they are so beneficial for maintaining hydration, especially in warm weather. Consuming water-rich foods like cucumber helps to contribute to your daily fluid intake, which is essential for numerous bodily functions, including regulating body temperature, transporting nutrients, and lubricating joints.

Vitamins, Minerals, and Phytonutrients

Beyond just a calorie and water source, cucumbers offer a host of beneficial vitamins and minerals. They are a good source of vitamin K, which plays a crucial role in blood clotting and bone health. They also contain small but notable amounts of vitamin C, potassium, magnesium, and manganese. The peel is particularly nutrient-dense and contains potent antioxidants, such as flavonoids and lignans, that can help protect the body from free radical damage.

Comparison: Cucumber vs. Other Low-Calorie Vegetables

To put the low calorie count of cucumber into perspective, it's useful to compare it to other popular vegetables often used in salads and snacks. As you can see, the calorie difference per 100g is minimal, reinforcing cucumber's status as a top choice for low-calorie eating.

Food Calories (Per 100g) Main Feature
Cucumber 15 kcal Highest water content
Zucchini 17 kcal Slightly more carbs and fiber
Celery 14 kcal Slightly less caloric than cucumber
Iceberg Lettuce 14 kcal Also very high in water content
Bell Pepper 20 kcal Higher Vitamin C content

Health Benefits of Incorporating Cucumber into Your Diet

Integrating cucumbers into your diet can have several positive effects on your health. Their high water and fiber content aids in digestion and can prevent constipation. The anti-inflammatory properties of cucumbers may help to reduce inflammation throughout the body and mitigate the risk of developing certain chronic diseases. The antioxidants present, particularly in the peel, provide cellular protection and contribute to overall wellness.

Furthermore, the potassium and other electrolytes in cucumbers can help regulate blood pressure. The fiber content is also beneficial for glycemic control, making cucumbers an ideal non-starchy vegetable for managing blood sugar levels. While cucumbers are often celebrated for their benefits when consumed, they are also used topically. Placing cucumber slices on the skin can help soothe sunburn and reduce swelling and puffiness, a common practice for reducing under-eye bags.

Maximizing Nutritional Value: Peel On or Off?

For those wondering whether to peel their cucumber, the recommendation is clear: leave the peel on. The peel is the most nutrient-dense part of the vegetable, packed with fiber, vitamin K, and valuable antioxidants. However, if you are concerned about pesticide residue, buying organic cucumbers or washing them thoroughly is advisable. The difference in calorie count between peeled and unpeeled (approximately 12 kcal vs. 15-16 kcal) is negligible, but the difference in overall nutritional benefits is significant. It is worth noting that some varieties of cucumbers, like the English cucumber, have thinner, less bitter skins and are often consumed unpeeled.

Delicious Ways to Enjoy Cucumbers

Lists of ideas are a great way to help people use this low-calorie vegetable:

  • In Salads: Slice thinly and add to any salad for a crisp, refreshing crunch.
  • As a Snack: Eat cucumber sticks with hummus or a yogurt-based dip for a satisfying, low-calorie snack.
  • Hydrating Water: Infuse a pitcher of water with sliced cucumber and mint for a delicious and detoxifying drink.
  • Sandwich Filler: Use slices in sandwiches and wraps for added moisture and a fresh flavor.
  • Salsas and Dips: Finely dice cucumber for a crunchy addition to homemade salsas or tzatziki.
  • Soups: Add to cold soups like gazpacho for a refreshing twist.

Conclusion

With a minimal calorie count of just 12 to 16 calories per 100g, cucumber is an excellent dietary choice for weight management, hydration, and overall health. Its high water content and array of vitamins, minerals, and antioxidants make it a valuable addition to any eating plan. Whether you're seeking to shed pounds, stay hydrated, or simply boost your nutrient intake, adding this crisp, refreshing vegetable to your diet is a simple and effective strategy. So next time you're looking for a healthy snack or salad component, remember the impressive benefits packed into this humble gourd, and consider leaving the nutrient-rich peel on for maximum benefit. For more nutritional information on a wide range of foods, including detailed comparisons, you can consult reliable resources like Healthline.

Frequently Asked Questions

There are slightly more calories in a cucumber with the peel on, providing around 15-16 kcal per 100g, compared to approximately 12 kcal per 100g when peeled. This is due to the added fiber and nutrients in the skin.

Botanically, the cucumber is classified as a fruit because it grows from the flower and contains seeds. However, in culinary contexts, it is most often treated and consumed as a vegetable.

Yes, cucumber is excellent for weight loss. Its very low calorie count and high water content allow you to eat a significant amount and feel full, reducing overall calorie intake.

Beyond its high water content, cucumber is notable for its Vitamin K content, which is important for blood clotting and bone health.

Absolutely. With a water content of about 96%, cucumbers are one of the most hydrating foods you can eat and are a great way to supplement your fluid intake.

Cucumber skin is rich in fiber and beneficial antioxidants, which can help fight inflammation and protect your cells from damage. It's recommended to leave the peel on for maximum nutritional benefit.

Cucumbers are significantly lower in calories than carrots. For example, carrots contain about three times the calories of cucumber per 100g, at around 42 kcal compared to cucumber's 15 kcal.

Yes, cucumbers are beneficial for skin both inside and out. The hydration and antioxidants help maintain skin health, and placing slices on your skin can help reduce swelling and puffiness.

References

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5

Medical Disclaimer

This content is for informational purposes only and should not replace professional medical advice.