Watermelon - How Many Calories?

Reviewed by Dyt. Şeyda Ertaş, Registered Dietitian Last updated: January 4, 2026

Watermelon

~150 g

Calculated from the 100 g values. ~ indicates an estimated serving weight.

Watermelon image
45kcal
Carbohydrate11.3 g %89
Protein0.9 g %7
Fat0.2 g %4

Watermelon Nutrition Values

Nutrients100 gr1 Porsiyon (Orta)
Calories(kcal)3045
Carbohydrate (g)7.5511.33
Protein (g)0.610.92
Fat (g)0.150.23
Fiber (g)0.40.6
Cholesterol (mg)00
Sodium (mg)11.5
Potassium (mg)112168
Calcium (mg)710.5
Iron (mg)0.240.36
Vitamin A (IU)569853.5
Vitamin C (mg)8.112.15

Values are calculated from a 100 g basis. The product, recipe and edible serving weight can change the result. See the food-specific notes below for the reference used.

Dietitian's Tips for Consuming Watermelon

  • Metabolic Effect: Watermelon cools the body and has a diuretic effect due to its high water content. Its fiber content is low, so it can raise blood sugar quickly.
  • Consumption Recommendation: Instead of consuming watermelon alone, consuming it with a food containing protein or fat (e.g., cheese or nuts) helps balance blood sugar. It may be more appropriate to consume it between meals.
  • Things to Consider: Excessive consumption of watermelon can cause a rapid rise in blood sugar, especially for diabetics. One large slice of watermelon is equivalent to about 2 servings of fruit.
  • Exercise Equivalent: To burn the calories you get from watermelon, it is enough to walk at a light pace for about 10 minutes. This can be a fun activity, especially in summer.