Watermelon Nutrition Facts
A 100 g serving of watermelon contains 30 kcal, 0.6g protein (lime), 0.1g fat (pink) and 8g carbohydrate (blue). It has modest fiber and 6.2g sugar. Its other nutrient values are modest — see the full breakdown below.
Core Nutrients per 100 g
PER 100 G SERVINGThe six values MacroDrop shows on every meal card: energy, the three macros, fiber and sugars.
Extended Nutrients
PER 100 G SERVINGGrouped as in the app: lipids, minerals, vitamins and other compounds sit one level below the core six. Daily values follow the FDA 2,000 kcal reference.
Understanding Watermelon Nutrition
Watermelon is a nutrient-dense fruit prized for its natural sugars, fiber and vitamin content. At 30 kcal per 100 g serving, it provides 0.6g of protein, 8g of carbohydrate and 0.1g of fat. Watermelon is particularly rich in vitamin C, delivering 8mg — 9% of the daily value — in a single serving. It has modest fiber and 6.2g sugar.
For athletes and anyone tracking macros, watermelon is a straightforward source of carbohydrate energy, useful around training for topping up glycogen. Its fiber and micronutrient content makes it a useful addition to a balanced macro split without pulling calories too high.
Frequently Asked Questions
How many calories are in a 100 g serving of watermelon?
A 100 g serving of watermelon has 30 kcal, 0.6g protein, 0.1g fat and 8g carbohydrate.
How much protein is in watermelon?
0.6g per 100 g serving.
Is watermelon high in sugar or fiber?
It has modest fiber and 6.2g sugar — 0.4g fiber and 6.2g sugar per 100 g serving.
Which nutrients is watermelon richest in?
No single micronutrient stands out sharply — see the full breakdown below.
Is watermelon good for tracking macros?
For athletes and anyone tracking macros, watermelon is a straightforward source of carbohydrate energy, useful around training for topping up glycogen.
Log the watermelon in two seconds
MacroDrop tracks all of these nutrients — core and extended — from a photo, your voice or a barcode. Offline USDA database, 7,800 foods.
Values come from the USDA FoodData Central entry Watermelon, raw (FDC ID 167765), per 100 g. Daily values follow the FDA 2,000 kcal reference. Last reviewed August 2026.