Is sourdough bread keto?
Sourdough bread
Not keto No — sourdough bread is not keto-friendly.
Fermentation doesn't remove the starch — one thick slice has about 28 g net carbs.
Nutrition per serving
1 slice · 56 g- Net carbs
- 28g
- Calories
- 152kcal
- Protein
- 6g
- Fat
- 1.4g
- Total carbs
- 29 g
- Fiber
- 1.2 g
One serving vs. a 20 g daily net-carb limit 139%
1.4× the daily limit
About 10.1 g of sourdough bread adds up to 5 g net carbs — about 18% of a typical serving.
| Nutrient | Per serving | Per 100 g |
|---|---|---|
| Calories | 152 kcal | 272 kcal |
| Total carbohydrate | 29 g | 52 g |
| Dietary fiber | 1.2 g | 2.2 g |
| Net carbs | 28 g | 50 g |
| Sugars | 2.6 g | 4.6 g |
| Protein | 6 g | 11 g |
| Fat | 1.4 g | 2.4 g |
Portion calculator
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Better keto swaps for sourdough bread
Keto substitutes for bread 7 alternatives with carb comparisons and recipes Read guide Low-carb recipes that replace sourdough bread
Frequently asked questions
Is sourdough bread keto?
No — sourdough bread is not keto-friendly. Fermentation doesn't remove the starch — one thick slice has about 28 g net carbs.
How many net carbs are in sourdough bread?
1 slice (56 g) of sourdough bread has about 28 g net carbs (29 g total carbs minus 1.2 g fiber). Per 100 g, that's 50 g net carbs.
How much sourdough bread can I eat on keto?
About 10.1 g of sourdough bread adds up to 5 g net carbs — about 18% of a typical serving. On a typical 20 g daily limit, one serving uses about 139% of your carbs.
What is a good keto substitute for sourdough bread?
Try almond flour. See our full guide: keto substitutes for bread.
