How many calories are in cucumber?

One cup of sliced cucumber has only 16 calories. A whole medium cucumber has 45 calories. Per 100g, cucumbers are just 15 calories - one of the lowest calorie foods, similar to celery.

Are cucumbers good for weight loss?

Cucumbers are perfect for weight loss - 95% water, only 15 cal/100g, and very filling. They add crunch and volume to meals without calories. Snack on them freely when cutting calories.

What nutrients are in cucumbers?

Cucumbers provide 152mg potassium, vitamin K (11% DV), and 0.7g protein per cup. They're mostly water (95%) so nutrient density is low, but they offer hydration and antioxidants. Eat the peel for more fiber.

Are cucumbers keto-friendly?

Cucumbers are excellent for keto with only 3.3g net carbs per cup (3.8g carbs - 0.5g fiber). They're one of the best keto vegetables for snacking. Pair with cream cheese or ranch for added fat.

Are cucumbers nutritious?

Cucumbers are modest in nutrients per calorie - their main value is hydration and low-calorie snacking. They contain vitamin K, potassium, and antioxidants like cucurbitacins. Eat the peel for more fiber and nutrients.

Are cucumbers hydrating?

Yes, cucumbers are 95% water - one of the most hydrating foods. One cucumber contains about 10oz of water. They're excellent for hydration, especially in summer or after workouts.

How should I store cucumbers?

Store whole cucumbers in the fridge crisper drawer for 1-2 weeks. Don't store near tomatoes or melons (they emit ethylene gas that speeds spoilage). Cut cucumber lasts 2-3 days wrapped in plastic.

Should I peel cucumbers?

Cucumber peel contains most of the fiber and some vitamins. Eat unpeeled for more nutrition. If the peel is waxed (common on grocery store cucumbers) or bitter, peel it. Organic cucumbers don't need peeling.

Cucumber vs celery: which has fewer calories?

They're nearly identical - cucumber has 15 cal/100g, celery has 14 cal/100g. Cucumbers have more potassium; celery has more sodium and fiber. Both are excellent for low-calorie snacking.

How much cucumber can I eat daily?

There's no limit on cucumber consumption for most people. At 15 cal/100g, even a whole cucumber is only 45 calories. Eat as much as you like - it's mostly water and won't cause weight gain.

All Foods

Calories in Cucumber

USDA Verified · FDC 168409 · Jan 2026

16 calories

per 1 cup sliced (104g)

0.7g

Protein

3.8g

Carbs

0.1g

Fat

0.5g

Fiber

Per 100g raw

Log Cucumber in one photo

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