Watermelon is an extremely healthy and low-calorie fruit that is loaded with lycopene and Vitamin C. One cup of watermelon has roughly u003cstrongu003e46 caloriesu003c/strongu003e, u003cstrongu003e0 grams of fatu003c/strongu003e, u003cstrongu003e11 grams of carbohydratesu003c/strongu003e (1 gram of fiber and 11 grams of sugar), and 1 gram of protein. Watermelon is a healthy dessert option for those not on a particular diet. People on a low-carb, keto, or diabetic diet may want to avoid or limit their watermelon intake due to their high carbohydrate and sugar content. Enjoy healthy snacks like watermelon all summer!