Is Watermelon keto?
Watermelon is keto only in small portions: it has ~10 g of net carbs per 1 cup diced, against the keto diet's 5 g-per-serving limit.
Net carbs = total − fiber
10 g
per 1 cup diced
These are the carbs that count on keto: total carbs minus fiber.
Watermelon has 10.8g of net carbs per serving, and it's easy to overeat due to its high glycemic index.
Nutrition facts for watermelon
How many carbs are in watermelon?
Watermelon has ~11 g of carbs and ~10 g of net carbs per 1 cup diced (total carbs minus 0 g of fiber).
Why watermelon is keto only in small portions?
On keto the goal is to stay under ~5 g of net carbs per serving; watermelon has 10 g per 1 cup diced (11 g total − 0 g of fiber).
How much watermelon can I eat on keto?
To stay under 5 g of net carbs, the limit is ~69 g of watermelon.
Related
No
In moderation
In moderation
No
Yes
No
See all: Keto fruits
Reviewed by the Ketorai team · Last updated: July 5, 2026 · How we assign the verdict
For information only. This does not replace advice from a health professional.
Something off? Let us know.
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