The Cucumber Nutrition Calculator makes it easy to see exactly what a cucumber serving contains — calories, carbohydrates, fiber, protein, fat, potassium, vitamin K, vitamin C, and more. Choose your amount in grams, ounces, slices, cups, or whole medium cucumbers, and decide whether you want the peel on or off, because cucumber skin adds extra fiber and vitamin K.
Whether you are counting nutrients, planning meals, or just curious about hydration, this tool converts your portion into a full nutrition label. Daily Value percentages help you see how much key vitamins and minerals a cucumber serving contributes. It is useful for fitness enthusiasts, and home cooks who want accurate answers without digging through food databases.
Use the preset shortcuts for common portions or type in any custom amount, then hit Calculate to see your complete cucumber nutrition breakdown.
This tool provides general estimates based on published food-composition and physical-activity data. It is for informational purposes only and is not medical, nutrition, or dietary advice. Individual needs vary — consult a qualified professional for personal guidance.
🥒 Cucumber Nutrition Calculator
Find the calories, carbs, protein, fat, and key vitamins in any cucumber serving.
How to Use This Tool
Enter the amount of cucumber you plan to eat in the number box, then select the unit that matches how you measure it: grams, ounces, slices, 1-cup portions, or whole medium cucumbers. If you peel cucumbers before eating, choose "Without peel" in the skin/peel dropdown — the calculator will use the peeled-cucumber nutrition profile instead of the with-peel profile. The preset buttons are convenient shortcuts for common portions such as one medium cucumber, one cup of slices, and five slices.
After you click Calculate, the result area shows total calories, macronutrients with net carbs, a table of key vitamins and minerals with daily values, and the water content of your serving.
Nutrition Reference Data & Calculation Method
The calculator uses USDA FoodData Central reference values for raw cucumber. All values are per 100 g (about 3.5 oz) of edible portion. Peeling changes the nutrient profile because most of the vitamin K and a meaningful share of the fiber are concentrated in or just under the skin.
| Nutrient (per 100 g) | With peel | Without peel |
|---|---|---|
| Calories | 15 kcal | 12 kcal |
| Carbohydrates | 3.63 g | 2.16 g |
| Fiber | 0.5 g | 0.7 g |
| Sugars | 1.67 g | 1.38 g |
| Protein | 0.65 g | 0.59 g |
| Fat | 0.11 g | 0.11 g |
| Potassium | 147 mg | 136 mg |
| Vitamin K | 16.4 µg | 9.3 µg |
| Vitamin C | 2.8 mg | 3.2 mg |
| Calcium | 16 mg | 14 mg |
| Magnesium | 13 mg | 11 mg |
To compute your serving, the calculator first converts your chosen unit to grams, then divides by 100 to get a scaling factor, and finally multiplies every nutrient by that factor. This makes it easy to work with any portion size while staying consistent with standard reference data.
Worked Examples
Example 1: One medium cucumber with peel (301 g). Scale factor = 301 ÷ 100 = 3.01. Calories = 15 × 3.01 ≈ 45 kcal. Carbohydrates ≈ 10.9 g, protein ≈ 2.0 g, fat ≈ 0.3 g. Vitamin K = 16.4 × 3.01 ≈ 49.4 µg, which is about 41% of the Daily Value.
Example 2: 100 g peeled cucumber in a salad. Without peel, calories = 12 kcal, carbs ≈ 2.2 g, and vitamin K drops to 9.3 µg — about 8% of the Daily Value.
These examples show why it matters whether you include the peel and how large your serving really is. Small cucumbers used for snacking are typically 100–150 g, while the larger English cucumbers can exceed 300 g.
Practical Tips for Cucumber Servings
- Weigh cucumbers with a food scale for the most accurate counts; visual estimates can vary by 20 g or more.
- Keep the peel if you want extra vitamin K and a slightly higher fiber value — just wash well.
- Cucumber is about 95% water, so a 250 g serving provides roughly 238 g of water, which contributes to daily fluid intake.
- For low-carb or keto meal plans, cucumbers are a popular choice: a 100 g portion with peel has about 3.1 g net carbs.
You may also want to check the watering calories per 5 minutes tool page.
Frequently Asked QuestionsAre cucumbers good for weight loss? Cucumbers are low in calories and high in water, so they can be a filling, low-energy addition to meals. Any weight change still depends on your overall diet and activity. A whole cucumber with peel has roughly 45 kcal, depending on size.
How many carbs are in a cucumber? A medium cucumber with peel contains about 10.9 g total carbohydrates and 1.5 g fiber, leaving about 9.4 g net carbs. Peeled cucumber is slightly lower in total carbs.
Is cucumber a good source of vitamin K? With the peel on, a medium cucumber provides about 41% of the Daily Value for vitamin K. Without the peel, the amount drops to roughly 8–15% depending on size.
Do nutrition values change for pickled cucumbers? Yes. Pickling adds sodium and can change the vitamin profile. This calculator is designed for raw, fresh cucumber, not pickles.
If you are tracking several vegetables at once, you can also calculate the nutrition for other produce with the avocado nutrition calculator.
Additional Resources
The nutrient values used here are based on data from the USDA FoodData Central, the official U.S. government food composition database. Daily Value percentages follow the FDA's nutrition labeling standards. For general healthy eating guidance, visit Nutrition.gov.
Disclaimer: This tool provides arithmetic estimates based on public reference data. It is not medical advice, a diagnosis, or a treatment plan, and it does not replace the guidance of a physician, registered dietitian, or other licensed professional. Actual nutrient needs and energy expenditure vary widely with body weight, age, health status, and medication. If you have a medical condition, are pregnant or breastfeeding, or are making any health-related decision, consult your doctor or a registered dietitian first.