Is Sourdough keto?
Sourdough is not keto: it has ~19 g of net carbs per 1 slice, against the keto diet's 5 g-per-serving limit.
Net carbs = total − fiber
19 g
per 1 slice
These are the carbs that count on keto: total carbs minus fiber.
Sourdough bread is not keto-friendly as one slice contains 19.5 g of net carbs.
Nutrition facts for sourdough
How many carbs are in sourdough?
Sourdough has ~21 g of carbs and ~19 g of net carbs per 1 slice (total carbs minus 1 g of fiber).
Why sourdough is not keto?
On keto the goal is to stay under ~5 g of net carbs per serving; sourdough has 19 g per 1 slice (21 g total − 1 g of fiber).
How much sourdough can I eat on keto?
To stay under 5 g of net carbs, the limit is ~10 g of sourdough. A better keto alternative is coconut flour.
Best keto alternative
Related
No
No
In moderation
No
No
No
Keto recipes with sourdough
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.
Search another food