Sourdough Bread Calories and Macros — Nutrition Facts per 1 slice (50g)

Tracking sourdough bread? Expect 136 calories per 1 slice (50g), with 5.4g of protein, 26g of carbs, and 1.2g of fat. The full micronutrient picture and goal-fit notes follow, with figures drawn from USDA FoodData Central.

Sourdough Bread nutrition facts

*Percent Daily Values are based on a 2,000-calorie diet. Source: USDA FoodData Central.

French/sourdough-style loaf. Calorie-wise it's ordinary bread — the fermentation changes texture and digestibility, not the macros. Bakery slices are often much heavier than sandwich-bread slices.

How does sourdough bread fit your goals?

Sourdough bread is a carb-dominant food, with 26g of carbohydrate per 1 slice (50g). That makes it a useful pre- or post-training fuel source, especially for endurance work or higher-volume strength sessions. If you're tracking for fat loss, the lever isn't avoiding carbs — it's portioning them around the parts of your day where the energy is actually used.

Diet-wise, sourdough bread fits vegan and vegetarian eating patterns.

Micronutrients worth noting

Beyond the macros, sourdough bread pulls real weight on iron (11% DV) per 1 slice (50g) — the kind of micronutrient density that calorie counts alone don't show.

How sourdough bread compares to other grains & starches

The fastest way to log sourdough bread

You could search a food database for "sourdough bread", scroll past a dozen near-duplicates, and guess at the serving size — or you could take one photo. Bento Bunny's AI photo tracking identifies sourdough bread, estimates the portion, and files the macros into your day in a couple of seconds, with the AI running on-device on iOS 26+.

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