Here are the nutrition facts for the watermelon, according to the U.S. Food and Drug Administration, which regulates food labeling through the National Labeling and Education Act:
Nutrition facts
Serving size: 2 cups diced (10 oz / 280 g) Calories: 80 (Calories from Fat 0)
Amount per serving (and %DV*) *Percent Daily Values (%DV) are based on a 2,000 calorie diet.
Total Fat: 0g (0%)
Total Carbohydrate: 21g (7%) Dietary Fiber: 1g (4%) Sugars: 20g
Cholesterol: 0mg (0%) Sodium: 0mg (0%) Potassium: 270mg (8%) Protein: 1g
Vitamin A: (30%) Vitamin C: (25%) Calcium: (2%) Iron: (4%)