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Carbs in Watermelon

Watermelon Nutritional Information


Updated May 23, 2014

Plated wedges of summer farm fresh watermelon.
Jacob Snavely/Photodisc/Getty Images
Watermelons are moderately high in sugar, but small amounts can be part of a low-carb diet. It is best to measure carefully, however, as a wedge of watermelon is often equal to several servings.

Carbohydrate and Fiber Counts for Watermelon

  • ½ cup diced watermelon: 5.5 grams effective (net) carbohydrate, plus scant fiber and 23 calories
  • 1 wedge watermelon (1/16 average watermelon; about 10 oz): 22 grams effective (net) carbohydrate, plus 1 gram fiber and 86 calories

Glycemic Index for Watermelon

One study of watermelon showed that the fruit had an average glycemic index of 72.

More Information about the Glycemic Index

Glycemic Load of Watermelon

  • ½ cup of chopped watermelon: 1.5
  • 1 wedge watermelon (1/16 average watermelon; about 10 oz): 6

More Information about the Glycemic Load

Health Benefits of Watermelons

Watermelon is a very good source of vitamin C and vitamin A. It is also an excellent source of lycopene.

Low-Carb Recipe with Watermelon:

More Information About Watermelon at Calorie Count Plus.

More Carb Profiles:


Leroux, MarcusFoster-Powell, Kaye, Holt, Susanna and Brand-Miller, Janette. "International table of glycemic index and glycemic load values: 2002." American Journal of Clinical Nutrition. Vol. 76, No. 1, 5-56, (2002).

USDA National Nutrient Database for Standard Reference, Release 20.

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