BeslyWatermelon: Calories, Protein, Carbs & Fat
A serving of watermelon listed as 1 wedge (280 g) has 84 calories, 1.7 g of protein, 21 g of carbs and 0.3 g of fat. Per 100 g that is 30 kcal.
Snap your plate, get calories and macros — free on the App Store →
Scan to get Besly
Watermelon serving sizes: calories and macros
| Serving | Grams | Calories | Protein g | Carbs g | Fat g |
|---|---|---|---|---|---|
| 100 g | 100 | 30 | 0.6 | 7.5 | 0.1 |
| 1 oz | 28.4 | 9 | 0.2 | 2.1 | 0 |
| 1 wedge | 280 | 84 | 1.7 | 21 | 0.3 |
Where the calories in watermelon come from
Counting protein and carbs at 4 calories per gram and fat at 9, watermelon gets 7% of its calories from protein, 90% from carbs and 3% from fat. This split is calculated from the macros listed per 100 g (0.6 g protein, 7.5 g carbs, 0.1 g fat).
Sodium, fiber, sugar and saturated fat in watermelon
A 1 wedge (280 g) of watermelon also contains 2.8 mg sodium, 1.1 g fiber, 17.4 g sugar and 0 g saturated fat.
| Nutrient | Per 100 g | Per 1 wedge (280 g) |
|---|---|---|
| Sodium | 1 mg | 2.8 mg |
| Fiber | 0.4 g | 1.1 g |
| Sugar | 6.2 g | 17.4 g |
| Saturated fat | 0 g | 0 g |
| Cholesterol | 0 mg | 0 mg |
| Potassium | 112 mg | 313.6 mg |
| Calcium | 7 mg | 19.6 mg |
| Iron | 0.2 mg | 0.7 mg |
| Vitamin C | 8.1 mg | 22.7 mg |
How watermelon compares with similar foods
Among the 6 foods compared here, watermelon is number 1 when sorted from the lowest to the highest calories per 100 g (30 kcal). The comparison uses foods from the same food group (fruit) that have a page on Besly.
| Food (per 100 g) | Calories | Protein g | Carbs g | Fat g |
|---|---|---|---|---|
| Watermelon (this page) | 30 | 0.6 | 7.5 | 0.1 |
| Strawberries | 32 | 0.7 | 7.7 | 0.3 |
| Oranges | 50 | 0.9 | 11.4 | 0.1 |
| Pineapple | 50 | 0.5 | 13.1 | 0.1 |
| Apple | 52 | 0.3 | 13.8 | 0.2 |
| Blueberries | 57 | 0.7 | 14.5 | 0.3 |
Frequently asked questions
How many calories are in 1 wedge of watermelon?
1 wedge (280 g) of watermelon has 84 calories, with 1.7 g protein, 21 g carbs and 0.3 g fat.
How many calories are in 100 g of watermelon?
100 g of watermelon has 30 calories, 0.6 g protein, 7.5 g carbs and 0.1 g fat. One ounce (28.4 g) is 9 calories.
Is watermelon low in carbs?
Carbs supply 90% of the calories in watermelon (protein 7%, fat 3%). Per 100 g there are 7.5 g of carbs, and 1 wedge (280 g) has 21 g, including 1.1 g of fiber.
Recipes with watermelon
Log watermelon without typing. In Besly you snap the plate or say what you ate, and the calories and macros land in your diary. Get Besly →
Source: USDA FoodData Central, via the Besly food database (source tag “usda”, record us.generic.watermelon). Data snapshot: October 16, 2026. Values are averages for the food as described and vary by brand, ripeness and preparation. Serving sizes come from the same record.