Is lemon keto?
lemon is keto only in small portions: it has ~5 g of net carbs per 1 medium fruit, against the keto diet's 5 g-per-serving limit.
Net carbs = total − fiber
5 g
per 1 medium fruit
These are the carbs that count on keto: total carbs minus fiber.
A whole medium lemon contains 5.48 g of net carbs, which is moderate, but a squeeze of juice or a slice is highly keto-friendly.
Nutrition facts for lemon
How many carbs are in lemon?
lemon has ~7 g of carbs and ~5 g of net carbs per 1 medium fruit (total carbs minus 2 g of fiber).
Why lemon is keto only in small portions?
On keto the goal is to stay under ~5 g of net carbs per serving; lemon has 5 g per 1 medium fruit (7 g total − 2 g of fiber).
How much lemon can I eat on keto?
To stay under 5 g of net carbs, the limit is ~77 g of lemon.
Related
No
In moderation
No
Yes
No
No
See all: Keto fruits
Reviewed by the Ketorai team · Last updated: August 10, 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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