Is Sourdough Bread Keto?

Bread & Baked
Sourdough Bread sticker illustration
KETO VERDICTAVOID

Sourdough Bread is generally unsuitable for keto at typical portions. The reference amount contains 49.7g net carbs; a normal serving can consume much of a strict daily carbohydrate limit.

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YOUR PORTION

How much are you having?

Scale the published reference values to your portion.

Per 100 g (as listed by source). USDA FoodData Central.

How this is calculated

total carbohydrate - fiber. Each published value is multiplied by your portion divided by the reference amount. No extra fiber, sugar alcohol or allulose deductions are applied here.

Grams and milliliters are not interchangeable. Household measures require a food-specific conversion; check your scale or product label.

49.7gnet carbs in your portion

Total carbs
51.9g
Fiber
2.2g
Protein
10.8g
Fat
2.4g
Calories
272
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Sourdough Bread is generally unsuitable for keto at typical portions. The reference amount contains 49.7g net carbs; a normal serving can consume much of a strict daily carbohydrate limit.

  • Net carbs (100 g)49.7g
  • Protein (100 g)10.8g
  • Fat (100 g)2.4g
  • Keto verdictAvoid on keto

NUTRITION FACTS

Per 100 g (as listed by source)

Net Carbs
49.7g
Total Carbs
51.9g
Fiber
2.2g
Protein
10.8g
Fat
2.4g
Calories
272

Source: USDA FoodData Central reference record

Source fit: generic reference; variety, brand, or preparation may differ

Net-carb calculation: total carbohydrate - fiber

This USDA record is used as a generic nutrition reference; variety, brand, or preparation may differ.

Nutrition record reviewed 2026-07-09. Maintained by KetoLens Team.

WHY IT'S NOT KETO-FRIENDLY

  • Very high net carbs: ~49.7g per 100g disrupts ketosis
  • Fermentation lowers FODMAPs—not total carbs
  • Low fat: poor keto macro ratio without heavy toppings
  • Even a single slice can exceed strict daily carb targets

PREPARATION SUGGESTIONS

PORTION CONTROL (IF OFF-PLAN)

This item contains the nutrients or compounds listed above; evidence for specific health outcomes depends on dose, preparation, and individual context.

OPEN-FACED OPTION

Use a single small slice as an open-faced base with avocado, eggs, or smoked salmon to cap carbs while boosting satiety.

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