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How many carbs are in a Sourdough Bread?

A 1 slice (32g) serving of Sourdough Bread contains 18.5g of total carbs (17.5g net carbs), 0.6g sugar, 93 calories, 3.8g protein, 0.6g fat and 1g fiber.

Nutrition facts
Sourdough Bread1 slice (32g)
Calories
93 cal
Carbohydrates
18.5 g
of which Sugars
0.6 g
Fiber
1 g
Net carbs
17.5 g
Protein
3.8 g
Fat
0.6 g

Sourdough Bread nutrition at a glance

Per 1 slice (32g), Sourdough Bread delivers about 5% of a 2,000-calorie daily reference, 7% of the 275g daily carbohydrate reference and 4% of the 28g daily fiber reference. Sugar sits at 1% of the 50g added-sugar reference and protein contributes 8% of the 50g protein reference.

Per 100 g
Calories
291
Carbs
57.8 g
Sugar
1.9 g
Protein
11.9 g
Fat
1.9 g
Fiber
3.1 g

Blood-sugar impact of Sourdough Bread

Moderate glycemic impact expected. If you're monitoring blood sugar, keep an eye on total portion size and combine with protein or fat.

With 18.5g total carbs and 1g fiber, the net-carb figure for a 1 slice (32g) serving works out to roughly 17.5g — this is the number most keto and low-carb tracking apps use. If you're managing type 2 diabetes, pre-diabetes or reactive hypoglycemia, use total carbs for insulin dosing calculations and treat net carbs as a rough guide for meal planning.

Ways to eat Sourdough Bread

  • Add sourdough bread to a balanced plate with a lean protein and non-starchy vegetables.
  • Use sourdough bread as part of a pre-workout snack when you need quick, usable energy.
  • Pair sourdough bread with a source of fat or protein to slow glucose absorption.

Frequently asked questions

Is Sourdough Bread keto-friendly?

Not usually. 17.5g net carbs per serving takes up a large share of a typical keto budget — reserve for special occasions or smaller portions.

How many carbs in Sourdough Bread per 100 grams?

About 57.8g of carbs, 1.9g sugar and 291 calories per 100g of Sourdough Bread.

How does Sourdough Bread affect blood sugar?

Moderate glycemic impact expected. If you're monitoring blood sugar, keep an eye on total portion size and combine with protein or fat.

Is Sourdough Bread good for weight loss?

A serving delivers 93 calories with 3.8g protein and 1g fiber. Foods that are relatively high in protein and fiber per calorie tend to be more filling — with a 5% combined protein-plus-fiber-to-calorie ratio, Sourdough Bread is a solid pick for a satiating, weight-loss-friendly meal.

Track Sourdough Bread automatically

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Sources & how these numbers are calculated

Nutrition values are consensus averages compiled from the USDA FoodData Central database for a typical 1 slice (32g) serving of Sourdough Bread. Actual values vary with brand, variety, ripeness and preparation — always check the label on packaged products. Daily-value percentages reference the U.S. FDA 2,000-calorie adult reference (275g carbs, 50g added sugar, 50g protein, 78g fat, 28g fiber).

Content reviewed by Carb Lens editorial. Read our editorial policy for how we source, review and update food data.

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