Sourdough Bread Calories & Nutrition Facts
Fermented bread with lower GI than regular bread, contains beneficial organic acids.
Quick answer
How many calories are in Sourdough Bread?
Sourdough Bread has 289 calories per 100g. A 1 oz (28g) has about 81 calories. It is a calorie-dense food, with most calories coming from carbs.
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Practical Portion Guide for Sourdough Bread
| Portion | Calories | Protein | Carbs | Net carbs | Fat |
|---|---|---|---|---|---|
| 1 oz (28g) | 81 kcal | 3.1g | 15.7g | 14.8g | 0.4g |
| 50g snack portion | 145 kcal | 5.5g | 28.0g | 26.4g | 0.8g |
| 100g reference | 289 kcal | 11.0g | 56.0g | 52.8g | 1.5g |
| 200g larger portion | 578 kcal | 22.0g | 112.0g | 105.6g | 3.0g |
Use gram-based portions when precision matters, especially during weight loss or macro tracking.
% Daily Value: 1 oz (28g) vs 100g
Percent Daily Values use the FDA reference amounts for adults (protein 50g, fiber 28g, carbohydrate 275g, fat 78g, sodium 2,300mg, cholesterol 300mg, potassium 4,700mg). The FDA label guide treats 20% DV or more per serving as high and 5% DV or less as low.
| Nutrient | Per 100g | % DV | 1 oz (28g) | % DV |
|---|---|---|---|---|
| Protein | 11g | 22% | 3.1g | 6% |
| Dietary fiber | 3.2g | 11% | 0.9g | 3% |
| Total carbohydrate | 56g | 20% | 15.7g | 6% |
| Total fat | 1.5g | 2% | 0.4g | 1% |
| Sodium | 590mg | 26% | 165mg | 7% |
| Cholesterol | 0mg | 0% | 0mg | 0% |
Source: FDA Daily Values (21 CFR 101.9), checked September 17, 2026.
Serving Size Calculator
Macros Breakdown (per 100g)
Diet Suitability
Glycemic Index: 53 (Low)
How Sourdough Bread Fits Into a Diet
Sourdough Bread can fit a balanced diet when portioned against your calorie and macro targets.
Build meals around protein, fiber, and minimally processed ingredients to make the portion more filling.
Preparation method, brand, and added ingredients can change the final nutrition values.
Plan Around Sourdough Bread
Compare Sourdough Bread With Similar Grains & Cereals
Use this comparison when choosing a serving. Calories alone do not tell the full story: protein, fiber, fat, sodium, and realistic portion size determine whether a food fits your plan.
| Food | Calories | Protein | Carbs | Fat | Fiber |
|---|---|---|---|---|---|
| Sourdough Bread | 289 kcal | 11g | 56g | 1.5g | 3.2g |
| White Rice (Cooked) | 130 kcal | 2.7g | 28g | 0.3g | 0.4g |
| Oats (Rolled) | 389 kcal | 17g | 66g | 7g | 11g |
| Whole Wheat Bread | 247 kcal | 13g | 41g | 3.4g | 7g |
| Pasta (Cooked, Whole Wheat) | 124 kcal | 5g | 25g | 0.5g | 3.2g |
| Quinoa (Cooked) | 120 kcal | 4.4g | 22g | 1.9g | 2.8g |
All comparison values use each food's 100-unit reference so foods can be compared on the same basis.
Vitamins & Minerals
Vitamins
Minerals
Complete Nutrition Facts (per 100g)
% DV = percent of the FDA Daily Value for a 2,000-calorie diet, per 100g. Total sugars have no Daily Value; the FDA value applies to added sugars only.
Methodology & Nutrition Data Sources
How we calculate nutrition data for Sourdough Bread: Calorie and macronutrient values are standardized reference profiles, generally based on USDA FoodData Central entries where available, then scaled to the serving you choose. Entries may come from different FDC data types or releases, and brand or preparation differences can change the numbers.
- Calorie and macronutrient data sourced from the USDA FoodData Central , the federal food composition database used as the main reference where a matching entry exists.
- Daily Value context: for % DV comparisons, use the FDA Daily Value reference amounts for a 2,000 calorie diet (21 CFR 101.9).
- Dietary reference intakes (DRI) for vitamins and minerals are available in the National Academies Dietary Reference Intake tables for further reading; this page does not calculate DRI percentages.
- Glycemic index values are approximate listed values; GI varies by variety, ripeness, and preparation, so compare with the Harvard Health Glycemic Index Reference and the University of Sydney GI database.
- Dietary guidelines context from the HHS/USDA Dietary Guidelines for Americans 2020–2025 , the federal evidence-based nutrition guidance.
Authoritative nutrition data sources:
- USDA FoodData Central, comprehensive food composition database
- FDA Nutrition Facts Label rules, % Daily Value methodology
- NIH Office of Dietary Supplements, vitamin and mineral research
- CDC Nutrition, Public Health Guidance, chronic disease and diet
- HHS/USDA Dietary Guidelines 2020–2025, federal nutrition recommendations
- Harvard T.H. Chan School of Public Health, The Nutrition Source, evidence-based dietary guidance
Nutrition Disclaimer: Calorie and nutrient values are generally based on USDA reference data and may vary by brand, preparation method, ripeness, and cooking technique. These values are for informational purposes only and should not replace personalized dietary advice from a registered dietitian. Individuals with medical conditions should consult a healthcare provider before making significant dietary changes.
Reviewed by Priya Lindqvist · Last updated September 17, 2026 · Values may not reflect the newest USDA FoodData Central release
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Frequently Asked Questions
Is Sourdough Bread high in protein?
Sourdough Bread has 11g protein per 100g, which is 22% of the 50g FDA Daily Value. 1 oz (28g) supplies about 3.1g, or 6% DV. Under the FDA label guide (20% DV or more per serving is high, 5% or less is low), that serving counts as a moderate protein contribution.
How many calories are in Sourdough Bread?
Sourdough Bread contains 289 calories per 100g serving. Using general 4-4-9 calorie factors, that is roughly 44 calories from protein, 224 calories from carbohydrates, and 14 calories from fat; these estimates may not add up exactly to the listed total.
Is Sourdough Bread good for weight loss?
Sourdough Bread is calorie-dense at 289 per 100g. For weight loss, use it in smaller portions and balance with lower-calorie, high-fiber foods to manage total intake.
How much protein is in Sourdough Bread?
Sourdough Bread contains 11g of protein per 100g. This provides a moderate amount of protein, contributing well to daily protein goals.
What serving size should I track for Sourdough Bread?
Track Sourdough Bread by grams when precision matters. A practical starting point is 1 oz (28g), which is about 81 calories. For packaged, restaurant, fried, sauced, or sweetened versions, use the product label because brand formulas can differ from the plain reference.
Is Sourdough Bread keto-friendly?
Sourdough Bread is not ideal for strict keto diets due to its 56g of carbohydrates per 100g. Small portions may fit if your daily carb limit allows.
Is Sourdough Bread good for diabetics?
People with diabetes should use caution with Sourdough Bread, which has a listed glycemic index of 53. Its carbohydrate content may affect blood sugar response depending on portion size and meal context. Consult your healthcare provider for personal advice.
What vitamins and minerals are in Sourdough Bread?
Calorique's food profile lists vitamins B1, B2, B3, Folate and minerals including Manganese, Selenium, Iron, Phosphorus for Sourdough Bread. These are general highlights, not measured amounts or a "good source" rating; check USDA FoodData Central or the product label for exact micronutrient values.
Where does Calorique get nutrition data for Sourdough Bread?
Calorique standardizes Sourdough Bread nutrition values per 100g using USDA FoodData Central reference fields where available, then scales the data into realistic serving sizes. FDA Nutrition Facts methodology and authoritative nutrition references are used for context. This page was last reviewed September 17, 2026.
Related Calculators
White Rice (Cooked)
130 cal · 2.7g protein per 100g
Oats (Rolled)
389 cal · 17g protein per 100g
Whole Wheat Bread
247 cal · 13g protein per 100g
Pasta (Cooked, Whole Wheat)
124 cal · 5g protein per 100g
Quinoa (Cooked)
120 cal · 4.4g protein per 100g
Brown Rice (Cooked)
112 cal · 2.6g protein per 100g
Barley (Cooked)
123 cal · 2.3g protein per 100g
Corn (Sweet, Cooked)
86 cal · 3.2g protein per 100g