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A slender, straight cucumber with deep green, lightly ridged skin dotted with small bumps and a narrow stem end.
●Low GI
★Natural

Japanese cucumber Calories

Low-calorie, hydrating cucumber with vitamin K

In season: Summer

CALORIES · 100 G

15kcal

GI

15low

POTASSIUM · 100 G

147mg

FIBER · 100 G

0.5g

Quick answer

1 piece (medium) of Japanese cucumber (150 g) has 23 calories. That works out to 15 calories per 100 g. It contains 5.4 g of carbs, 1 g of protein, 0.2 g of fat and 0.8 g of fiber. Its 24.6 µg of Vitamin K covers 21% of the Daily Value. Its glycemic index is 15 (low), so it raises blood sugar slowly.

Japanese cucumber Nutrition Facts

Selected: 1 piece (medium) · 150 g

23

KCAL / 150G

Carbs

5.4g

· 2% DV

Protein

1g

· 2% DV

Fat

0.2g

· 0% DV

Fiber

0.8g

· 3% DV

DV is the share of the daily value covered, on a 2,000 kcal reference diet.

Calories come from: Carbs 79% · Protein 15% · Fat 6%

Japanese cucumber nutrition facts table · 1 piece (medium) (150 g)

NutrientAmount% DV
Calories23 kcal
Total fat0.2 g0%
Saturated fat0.06 g0%
Trans fat0 g
Sodium3 mg0%
Total carbohydrate5.4 g2%
Fiber0.8 g3%
Protein1 g2%

Calories: Calories measure energy. Average daily need is 2,000 kcal. Excess calories are stored as fat, too few cause weight loss.

Carbs: Your body's primary energy source. The brain runs exclusively on carbs. Daily need: 275g.

Protein: Essential for muscle repair and cell growth. Daily need: 50g. Keeps you full and boosts metabolism.

Fat: Needed for hormone production and vitamin absorption. Daily need: 78g. Limit saturated fats, choose unsaturated.

Fiber: Critical for digestive health and satiety. Daily need: 28g. Stabilizes blood sugar, lowers cholesterol.

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How Many Calories in 1 Medium Japanese cucumber?

ServingAmountCalories
1 piece (medium)150 g23 kcal
50 g50 g8 kcal
1 piece (small)75 g11 kcal
½ piece (half)75 g11 kcal
100 g100 g15 kcal
1 serving (medium)100 g15 kcal
1 cup (chopped)104 g16 kcal
1 piece (large)220 g33 kcal
1 piece (jumbo)300 g45 kcal

Calculated from 15 calories per 100 g.

Frequently Asked Questions About Japanese cucumber

Is a Japanese cucumber the same as a Persian cucumber?

No, they are different cucumber types, although both are slim and often have tender skin. Japanese cucumbers are typically longer, while Persian cucumbers are shorter; names and varieties can overlap in shops, so appearance may vary.

How do you make Japanese cucumber salad?

Japanese cucumber salad is often made by thinly slicing the cucumber and tossing it with rice vinegar, a little sugar, and salt. For a Japanese sunomono-style salad, let the salted slices drain briefly before dressing them.

Can you use Japanese cucumber instead of English cucumber?

Yes, Japanese cucumber can usually replace English cucumber in salads, sandwiches, and cold dishes. It is often narrower and may have a firmer crunch, so slice it to the size your recipe calls for and adjust the amount if needed.

Do you peel a Japanese cucumber?

Usually, no. Japanese cucumber skin is generally thin and edible, so washing it well is enough for most recipes. If a particular cucumber has tough or bitter patches, peel those areas rather than removing the entire skin.

Why is my Japanese cucumber bitter?

A Japanese cucumber may taste bitter when the plant has been stressed, and the bitterness can be strongest near the ends. Taste a small piece before using it; if the bitterness is strong, discard the cucumber rather than masking it.

How do you choose a fresh Japanese cucumber?

Choose a Japanese cucumber that feels firm and has smooth, unwrinkled skin. Avoid soft ends, shriveling, or large damaged spots. A fresh one should feel substantial for its size, rather than limp or hollow.

How should you store Japanese cucumber?

Keep Japanese cucumber dry and unwashed in the refrigerator’s crisper drawer. A loosely wrapped paper towel can help manage moisture. Once cut, store it in a covered container in the refrigerator and use it promptly.

Can you pickle Japanese cucumber?

Yes, Japanese cucumber works well for quick pickles because its thin skin and crisp flesh take on a brine readily. Slice it, salt it briefly to draw out excess water, then add vinegar and seasonings or follow a tested preserving recipe.

Can you freeze Japanese cucumber?

Yes, but freezing makes Japanese cucumber soft and watery after thawing, so it will not keep its fresh crunch. Use thawed pieces in cooked dishes or blended preparations rather than serving them in a crisp salad.

Should you wash Japanese cucumber before eating it?

Yes, rinse Japanese cucumber under running water before cutting or eating it, especially if you plan to keep the skin on. Rub the surface gently and dry it with a clean towel; do not use soap or detergent.

Japanese cucumber Vitamins & Minerals

Vitamins

Vitamin K

24.6µg · 21% DV

B5

0.39mg · 8% DV

Vitamin C

4.2mg · 5% DV

Biotin

1.35µg · 5% DV

Minerals

Copper

0.06mg · 7% DV

Potassium ⭐

221mg · 7% DV

Manganese

0.12mg · 5% DV

Phosphorus

36mg · 5% DV

Sodium

3mg · 0% DV

Japanese cucumber Glycemic Index

GLYCEMIC INDEX

15
Low
0 Low5570100

GLYCEMIC LOAD

1.5
Low

Accounts for portion size — a more realistic measure than GI alone.

How to Burn Off Japanese cucumber

To burn the 23 calories in 1 piece (medium) (150 g):

🚶

6min

Walking (5 km/h)

🏃

2min

Running (8 km/h)

🚴

3min

Cycling

🏊

3min

Swimming

Times are calculated with the MET equation for a 70 kg adult. Actual burn varies with your weight, age and pace.

What is Japanese cucumber?

Japanese cucumber is a slender, crisp cucumber variety associated with Japanese cooking. It generally has thin skin and small seeds, so it is often sliced without peeling or removing the centre.

In Japan, it appears in simple salads such as sunomono, as well as pickles; elsewhere, you can use it much like other cucumbers, in salads, sandwiches or alongside a meal. Its clean, mild flavour and crunch also make it an easy snack with a dip. Mostly water and low in calories, it contributes vitamin K. Pair it with yoghurt or a savoury dip for a more substantial snack, and slice it just before serving to keep its texture fresh.

How Nutritious Is Japanese cucumber?

Nutrient density

High

62/ 100

How many vitamins, minerals and how much fiber this food carries per calorie. A high score means a lot of nutrition for few calories.

Satiety score

Medium

42/ 100

An EatBetter score computed from fiber, protein and calorie density. A high score means staying full longer on the same calories.

Both scores are calculated per 100 g and do not change with the selected portion. The satiety score is EatBetter's own calculation, not a clinical measure.

Is Japanese cucumber Processed?

NOVA 1

Unprocessed

1. Unprocessed

2. Minimally Processed

3. Processed

4. Ultra-Processed

NOVA classifies foods into 4 groups by industrial processing. NOVA 1 (unprocessed) is the healthiest.

Does Japanese cucumber Contain Allergens?

No known major allergens

Gluten free
Dairy free
Eggs free
Peanuts free
Tree nuts free
Fish free
Soy free
Sesame free

Which Diets Is Japanese cucumber Good For?

Vegan

✓ Suitable

Vegetarian

✓ Suitable

Gluten-Free

✓ Suitable

Dairy-Free

— Not suitable

Mediterranean

✓ Suitable

Paleo

✓ Suitable

Whole30

— Not suitable

DASH

— Not suitable

Keto

✓ Suitable

Low FODMAP

— Not suitable

Japanese cucumber Fat Profile

SATURATED

0.06g

MONOUNSATURATED

0.02g

POLYUNSATURATED

0.06g

⚖️

Omega 6:3 ratio 2.5:1

Below the ideal 4:1 — a good omega balance.

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Nutrition data compiled from USDA FoodData Central and scientific sources.