Cucumber Nutrition Facts: Is Cucumber Good for You?

Raw cucumber with the peel is very low in calories, containing just 15 per 100 grams, and is composed of over 95% water. It is a good source of Vitamin K, providing 14% of the Daily Value in a 100 g serving. While it contains small amounts of other vitamins and minerals, it is not a significant source of protein, fiber, or fat. Its contribution to your diet depends on portion size and the other foods you eat.

15Calories

0.65gProtein

3.6gCarbs

0.5gFiber

0.11gFat

1.7gSugars

Per 100 g · Cucumber, with peel, raw

Good source of (10 to 19% DV): Vitamin K

What stands out in cucumber

Good source of vitamin K. A 100 g serving of raw cucumber with peel provides 16.4 mcg of Vitamin K, which is 14% of the recommended Daily Value (DV).
High water content. Cucumber is 95.2% water by weight. This contributes to its very low calorie count of 15 kcal per 100 g serving.
Low in macros and sodium. This vegetable contains almost no fat (0.11 g), very little protein (0.65 g), and is naturally low in sodium (2 mg) per 100 g.

What to keep in mind

Raw cucumber is very low in sodium (2 mg), total sugars (1.7 g), and saturated fat (0.04 g) per 100 g serving. It is also low in dietary fiber, providing 0.5 g, or 2% of the Daily Value.

Cucumber nutrition facts per 100 g

Calories and macronutrients
Nutrient	Per 100 g	% DV
Calories	15 kcal	–
Protein	0.65 g	1%
Total fat	0.11 g	0%
Saturated fat	0.04 g	0%
Monounsaturated fat	0.01 g	–
Polyunsaturated fat	0.03 g	–
Cholesterol	0 mg	0%
Carbohydrate	3.6 g	1%
Dietary fiber	0.5 g	2%
Total sugars	1.7 g	–
Water	95.2 g	–
Sodium	2 mg	0%

Vitamins and minerals
Nutrient	Per 100 g	% DV
Potassium	147 mg	3%
Calcium	16 mg	1%
Iron	0.28 mg	2%
Magnesium	13 mg	3%
Phosphorus	24 mg	2%
Zinc	0.2 mg	2%
Copper	0.04 mg	5%
Manganese	0.08 mg	3%
Selenium	0.3 mcg	1%
Vitamin A (RAE)	5 mcg	1%
Vitamin C	2.8 mg	3%
Vitamin D	0 mcg	0%
Vitamin E	0.03 mg	0%
Vitamin K	16.4 mcg	14%
Thiamin (B1)	0.03 mg	2%
Riboflavin (B2)	0.03 mg	3%
Niacin (B3)	0.1 mg	1%
Vitamin B6	0.04 mg	2%
Folate (DFE)	7 mcg	2%
Vitamin B12	0 mcg	0%
Choline	6 mg	1%

% Daily Value uses the FDA Daily Values for adults and children 4 years and older. Highlighted rows are 20% DV or more per 100 g. A dash means no Daily Value is set.

Cucumber by portion

The nutrition information scales with the serving size. A portion of 0.5 cup slices (52 g) has 8 calories, 1.9 g of carbohydrates, and 0.3 g of fiber. A whole 8-1/4 inch cucumber (301 g) provides 45 calories, about 11 g of carbohydrates, and 1.5 g of fiber. This larger portion also contains about 49 mcg of Vitamin K, based on the per-100 g data.

USDA portion	Weight	Calories	Protein	Carbs	Fiber	Fat
0.5 cup slices	52 g	8	0.3 g	1.9 g	0.3 g	0.1 g
1 cucumber (8-1/4″)	301 g	45	2 g	10.8 g	1.5 g	0.3 g

How cucumber compares with other vegetables

Among the 38 vegetables in its group, raw cucumber ranks near the bottom for many nutrients, including protein (38th), dietary fiber (37th), and calories (36th). Its Vitamin K content is an exception, ranking 17th. Nutritionally, it is similar to other high-water vegetables. Per 100 g, its 15 calories are comparable to celery (14 kcal) and radishes (16 kcal). However, its dietary fiber (0.5 g) is lower than that of celery (1.6 g), radishes (1.6 g), and romaine lettuce (2.1 g), which have similar calorie counts.

Per 100 g	Calories	Protein	Carbs	Fiber	Fat
Cucumber	15	0.65 g	3.6 g	0.5 g	0.11 g
Radish	16	0.68 g	3.4 g	1.6 g	0.1 g
Celery	14	0.69 g	3 g	1.6 g	0.17 g
Zucchini	17	1.2 g	3.1 g	1 g	0.32 g
Romaine Lettuce	17	1.2 g	3.3 g	2.1 g	0.3 g

Quick answers

How many calories are in a cucumber?

A 100 g serving of raw cucumber with peel has 15 calories. A whole 8-1/4 inch cucumber, which weighs 301 g, has 45 calories.

How much sugar is in a cucumber?

Raw cucumber contains 1.7 g of total sugars per 100 g. A half-cup of slices has about 0.9 g of sugar, while a whole 8-1/4 inch cucumber has about 5.1 g.

Is cucumber a good source of fiber?

Cucumber is low in fiber. A 100 g serving provides 0.5 g of dietary fiber, which is 2% of the Daily Value. A whole 8-1/4 inch cucumber contains 1.5 g of fiber.

When to talk to a doctor or dietitian

This page describes nutrient content, not medical advice. If a health condition, medicine or pregnancy affects what you eat, a doctor or registered dietitian can tell you how cucumber fits your situation.