1 slice (medium) of Sourdough Bread (40 g) has 100 calories. That works out to 250 calories per 100 g. It contains 18.8 g of carbs, 3.4 g of protein, 0.5 g of fat and 1.1 g of fiber. Its 196 mg of Sodium covers 9% of the Daily Value. Its glycemic index is 54 (medium), so it raises blood sugar at a moderate pace.

Sourdough Bread Nutrition Facts

Selected: 100 g

250

KCAL / 100G

Carbs

47g

· 17% DV

Protein

8.5g

· 17% DV

Fat

1.2g

· 2% DV

Fiber

2.7g

· 10% DV

DV is the share of the daily value covered, on a 2,000 kcal reference diet.

Calories come from: Carbs 81% · Protein 15% · Fat 4%

Sourdough Bread Vitamins & Minerals

Vitamins

0.22mg · 18% DV

2.2mg · 14% DV

Folate

35µg · 9% DV

0.11mg · 8% DV

Minerals

Manganese

1mg · 43% DV

Sodium

490mg · 21% DV

Selenium

11µg · 20% DV

Iron

2mg · 11% DV

How Nutritious Is Sourdough Bread?

Nutrient density

Medium

35/ 100

How many vitamins, minerals and how much fiber this food carries per calorie. A high score means a lot of nutrition for few calories.

Satiety score

Medium

41/ 100

An EatBetter score computed from fiber, protein and calorie density. A high score means staying full longer on the same calories.

Both scores are calculated per 100 g and do not change with the selected portion. The satiety score is EatBetter's own calculation, not a clinical measure.

Sourdough Bread Glycemic Index

GLYCEMIC INDEX

Medium

0 Low5570100

GLYCEMIC LOAD

High

Accounts for portion size — a more realistic measure than GI alone.

How to Burn Off Sourdough Bread

To burn the 250 calories in 100 g:

🚶

62min

Walking (5 km/h)

🏃

26min

Running (8 km/h)

🚴

34min

Cycling

🏊

29min

Swimming

Times are calculated with the MET equation for a 70 kg adult. Actual burn varies with your weight, age and pace.

Is Sourdough Bread Processed?

NOVA 3

Processed

1. Unprocessed

2. Minimally Processed

3. Processed

4. Ultra-Processed

NOVA classifies foods into 4 groups by industrial processing. NOVA 1 (unprocessed) is the healthiest.

Does Sourdough Bread Contain Allergens?

Contains these allergens:

Gluten yes

Dairy free

Eggs free

Peanuts free

Tree nuts free

Fish free

Soy free

Sesame free

Which Diets Is Sourdough Bread Good For?

Vegan

— Not suitable

Vegetarian

✓ Suitable

Gluten-Free

— Not suitable

Dairy-Free

— Not suitable

Mediterranean

✓ Suitable

Paleo

— Not suitable

Whole30

— Not suitable

DASH

— Not suitable

Keto

— Not suitable

Low FODMAP

— Not suitable

Sourdough Bread Fat Profile

SATURATED

0.25g

MONOUNSATURATED

0.15g

POLYUNSATURATED

0.28g

⚖️

Omega 6:3 ratio 8.3:1

Above the ideal 4:1 (8.3:1).

Compare Sourdough Bread

🍞vs🥯

Sourdough Bread vs Poppy Seed Bagel15 kcal fewer per 100 g

→🍞vs🍚

Sourdough Bread vs Bulgur Pilaf130 kcal more per 100 g

→🍞vs🍝

Sourdough Bread vs Whole wheat pasta126 kcal more per 100 g

→🍞vs🥖

Sourdough Bread vs Breadstick160 kcal fewer per 100 g

→

Foods Similar to Sourdough Bread

🥯

Poppy Seed Bagel

265 kcal

🍚

Bulgur Pilaf

120 kcal

🍝

Whole wheat pasta

124 kcal

🥖

Breadstick

410 kcal

🥯

Simit

340 kcal

🥣

Granola

450 kcal

🍚

Rice Pilaf

150 kcal

🍚

Basmati Rice Pilaf

140 kcal

Frequently Asked Questions About Sourdough Bread

How many calories are in Boromir sourdough bread?

Boromir sourdough bread provides 250 calories per 100 g. The same serving contains 8.5 g of protein, 47 g of carbohydrates, and 1.2 g of fat.

What is the glycemic index of Boromir sourdough bread, and is it suitable for a Mediterranean diet?

Boromir sourdough bread has a glycemic index of 54. It is compatible with Mediterranean, vegetarian, omnivore, and flexitarian diets, but it contains gluten.

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Nutrition data compiled from USDA FoodData Central and scientific sources.

· Last updated: September 21, 2026