Food weight and portion guide
Watermelon: calories and portions
Watermelon, raw
The reference uses watermelon flesh; the rind is not included.
Calculate your portion
Enter 0.1–5,000 g. Exclude inedible skin, stones and bones.
for 250 g:
- Calories
- 75 kcal
- Protein
- 1.5 g
- Carbohydrate
- 18.9 g
- Fat
- 0.4 g
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Nutrition by weight
| Weight | Calories | Protein | Carbohydrate | Fat |
|---|---|---|---|---|
| 100 g | 30 | 0.6 g | 7.6 g | 0.2 g |
| 250 g | 75 | 1.5 g | 18.9 g | 0.4 g |
| 500 g | 150 | 3.1 g | 37.8 g | 0.8 g |
Values are scaled from the per-100-g data and rounded. “Calories” means kilocalories (kcal).
Tips for weighing and logging
Weigh the edible flesh, as a large slice can contain a substantial portion.
To calculate manually, multiply your portion weight in grams by 30 and divide by 100. For example, 250 g provides approximately 75 kcal.
When logging a photo, check the food, cooking method and estimated portion before saving. A photograph cannot reliably show hidden oil or exact weight.
Sources and calculation method
The record below provides values per 100 g of edible food. One reference variety or brand does not represent every product.Library method and limitations
- USDA FoodData Central — SR Legacy — Watermelon, raw · FDC ID: 167765 · SR Legacy Collection, April 2018
Data review and calculation: October 2, 2026. Author: Avocado editorial team. This guide supports food logging; it does not replace personalised advice from a registered dietitian.