Cucumber Nutrition Facts: Calories, Macros & Label
Cucumber has 8 calories, 0.4 g protein, 0.1 g fat and 1.9 g carbs per 0.5 cup slices — full USDA nutrition data with %DV, per-100 g values, and the FDA label below.
The FDA Nutrition Facts label for cucumber
This is what cucumber looks like on an actual FDA Nutrition Facts panel: one serving of 0.5 cup slices (52 g), with every value rounded exactly as 21 CFR 101.9 requires — the same rounding a compliance reviewer checks. Nutrient data is USDA FoodData Central (SR Legacy, FDC ID 168409: Cucumber, with peel, raw).
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Cucumber nutrition facts per serving and per 100 g
| Nutrient | Per 0.5 cup slices | % DV* | Per 100 g |
|---|---|---|---|
| Calories | 10 | — | 15 |
| Total Fat | 0g | 0% | 0.1g |
| Saturated Fat | 0g | 0% | 0g |
| Trans Fat | 0g | — | 0g |
| Cholesterol | 0mg | 0% | 0mg |
| Sodium | 0mg | 0% | 2mg |
| Total Carbohydrate | 2g | 1% | 3.6g |
| Dietary Fiber | 0g | 1% | 0.5g |
| Total Sugars | less than 1g | — | 1.7g |
| Added Sugars | 0g | 0% | 0g |
| Protein | 0g | — | 0.7g |
| Vitamin D | 0mcg | 0% | 0mcg |
| Calcium | 10mg | 1% | 16mg |
| Iron | 0.2mg | 1% | 0.3mg |
| Potassium | 75mg | 2% | 147mg |
* Percent Daily Values are based on a 2,000-calorie diet (FDA adult reference values). Per-serving values use the FDA's label rounding rules; per-100 g values are the unrounded USDA amounts.
Macronutrient breakdown
By calories, cucumber is 9% fat, 75% carbohydrate and 16% protein (Atwater 9/4/4 factors, per 0.5 cup slices). Of the 1.9 g of carbohydrate, 0.9 g is sugars and 0.3 g is dietary fiber.
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Cucumber nutrition FAQ
How many calories are in cucumber? Cucumber has 8 calories per 0.5 cup slices and 15 calories per 100 g, based on USDA data (Cucumber, with peel, raw).
How much protein is in cucumber? Cucumber has 0.4 g of protein per 0.5 cup slices, with 0.1 g of total fat and 1.9 g of carbohydrates.
Is cucumber high in sodium? Cucumber has 1 mg of sodium per 0.5 cup slices (0% of the Daily Value) — the FDA treats 5% DV or less as low.
What is the serving size for cucumber? These values use 0.5 cup slices (52 g) — the standard USDA household measure. The per-100 g column converts to any portion.
Related foods
Russet Potato · Onion · Green Leaf Lettuce · Yellow Squash · Steamed Broccoli · Butternut Squash
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Source: USDA FoodData Central, SR Legacy release (public domain). FDC ID 168409 — Cucumber, with peel, raw. Serving: 0.5 cup slices = 52 g (USDA household measure).
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