598 kcal P 20.5g C 27.7g F 45g
🍎 Fruits and Fruit Juices
Calories in Watermelon, seedless, flesh only
More than 90% water — and the only major produce item that's also a vegetable in some countries
3 kcal
What makes watermelon so powerful?
Watermelon is around 92% water by weight, making it one of the most hydrating whole foods that still delivers real nutrition, unlike plain water — its electrolyte content, notably potassium, is part of why it's a popular post-exercise food. Botanically, watermelon belongs to the cucumber and squash family, and in several countries, including parts of China, the rind is cooked and eaten as a vegetable, often pickled or stir-fried, rather than discarded. Watermelon's flesh also contains citrulline, an amino acid the body converts to arginine, which supports blood vessel dilation, and the compound is concentrated even more in the white rind than in the red flesh.
92% water by weight
One of the most hydrating whole foods that still delivers real electrolytes and nutrients.
A cucumber relative
Watermelon is in the same plant family as cucumbers and squash.
Citrulline is concentrated in the rind
The white part most people discard actually has more of this blood-vessel-supporting compound than the red flesh.
💡 When & how to use it
Don't toss the white rind — it can be pickled, stir-fried, or blended into a smoothie, and it's where citrulline concentration is highest. Watermelon is best served well-chilled, which most people find enhances perceived sweetness.
Calories by Serving Size
100g
3 kcal
P 0.87g C 0g F 0g
200g
6 kcal
P 1.7g C 0g F 0g
50g
2 kcal
P 0.4g C 0g F 0g
Full Nutrition Facts
Per 100g — daily values based on a 2,000 calorie diet
Nutrition Facts
Serving size: 100g
Calories 3
% Daily Value*
Total Fat 0g 0%
Sodium 0mg 0%
Total Carbohydrate 0g 0%
Protein 0.87g 2%
Vitamin C 6.46mg 7%
Calcium 7.86mg 1%
Iron 0.02mg 0%
Potassium 117mg 2%
* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
How does Watermelon fit your daily goals?
1 min
Walking to burn 3 kcal
0%
of 2,000 kcal daily goal
0.87g
protein (2% of daily 50g)
667
servings until 2,000 kcal
Log Watermelon in CalRay — just snap a photo
CalRay's AI recognizes watermelon and hundreds of thousands of other foods from a photo. No manual lookup needed.
Frequently Asked Questions
How many calories are in Watermelon, seedless, flesh only?
Watermelon, seedless, flesh only contains 3 calories per 100g. It is considered a very low-calorie food (under 50 kcal/100g), making it excellent for weight management.
How much protein does Watermelon, seedless, flesh only have?
Watermelon, seedless, flesh only provides 0.87g of protein per 100g, which is 2% of the 50g daily recommended value. It is not a primary protein source.
How many carbs are in Watermelon, seedless, flesh only?
Watermelon, seedless, flesh only contains 0g of carbohydrates per 100g .
Is Watermelon, seedless, flesh only good for weight loss?
Yes! Watermelon, seedless, flesh only is very low in calories (3 kcal/100g) and can be eaten in generous portions even on a calorie-restricted diet.
How do I track Watermelon, seedless, flesh only calories accurately?
The easiest way to track watermelon is with CalRay. Simply snap a photo of your meal and the AI will automatically identify the food and calculate calories and macros based on the estimated portion size — no manual lookup required. You can also search by name and adjust gram weight manually.
🍽️ Perfectly Pairs With Watermelon
See all → 598 kcal 
273 kcal P 19.7g C 5.58g F 19.1g
16 kcal P 0.63g C 2.95g F 0.18g