Watermelon contains approximately 7.5 to 8 grams of carbohydrates per 100 grams serving. More specifically, it has about 7.55 grams of total carbs per 100 grams, which includes sugars (around 6.2 grams), a small amount of fiber (0.4 grams), and negligible starch
. In terms of common serving sizes:
- One cup of watermelon (about 152 grams) contains roughly 12 grams of carbs
- An 8-ounce (227 grams) serving has about 17 grams of carbs, including 14 grams of sugar and 1 gram of fiber
- A whole large watermelon (about 4.5 kg) contains around 341 grams of total carbs
The carbohydrates in watermelon are mainly simple sugars such as glucose, fructose, and sucrose