EatBetterEatBetter
Foods ▾
Ready & Packaged FoodsVegetables & LegumesDesserts & ConfectioneryMeat & ProteinGrains & BakeryBeveragesMilk & DairyNatural & Other Foods

Ready & Packaged Foods

All →
Fast Food & RestaurantBurgers · Pizza · Doner & Wrap · Fried Sides · Restaurant Menu Items

Explore foods by category, subcategory or brand

CompareBrands
Tools ▾

Calorie Calculator

Work out your daily calorie needs

BMI Calculator

Body mass index from your height and weight

Food GuideCompareBlog
TR
Download on the App StoreGet it on Google Play
A rounded loaf of white-flour sourdough bread with a deep golden-brown, crisp-looking crust, a pale dusting of flour, and a cut face showing an ivory crumb with irregular air pockets.

White Flour Sourdough Bread Calories

Naturally fermented white bread

In season: Spring · Summer · Autumn · Winter

CALORIES · 100 G

255kcal

GI

54medium

POTASSIUM · 100 G

125mg

FIBER · 100 G

2.4g

Quick answer

1 slice (medium) of White Flour Sourdough Bread (35 g) has 89 calories. That works out to 255 calories per 100 g. It contains 18.2 g of carbs, 3 g of protein, 0.5 g of fat and 0.8 g of fiber. Its 9.5 µg of Selenium covers 17% of the Daily Value. Its glycemic index is 54 (medium), so it raises blood sugar at a moderate pace.

White Flour Sourdough Bread Nutrition Facts

Selected: 1 slice (medium) · 35 g

89

KCAL / 35G

Carbs

18.2g

· 7% DV

Protein

3g

· 6% DV

Fat

0.5g

· 1% DV

Fiber

0.8g

· 3% DV

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

Calories come from: Carbs 82% · Protein 13% · Fat 5%

White Flour Sourdough Bread nutrition facts table · 1 slice (medium) (35 g)

NutrientAmount% DV
Calories89 kcal
Total fat0.5 g1%
Saturated fat0.09 g0%
Trans fat0 g
Sodium165 mg7%
Total carbohydrate18.2 g7%
Fiber0.8 g3%
Protein3 g6%

Calories: Calories measure energy. Average daily need is 2,000 kcal. Excess calories are stored as fat, too few cause weight loss.

Carbs: Your body's primary energy source. The brain runs exclusively on carbs. Daily need: 275g.

Protein: Essential for muscle repair and cell growth. Daily need: 50g. Keeps you full and boosts metabolism.

Fat: Needed for hormone production and vitamin absorption. Daily need: 78g. Limit saturated fats, choose unsaturated.

Fiber: Critical for digestive health and satiety. Daily need: 28g. Stabilizes blood sugar, lowers cholesterol.

EatBetter

Log this food in EatBetter

100,000+ people use it

  • Get your daily calorie target
  • Snap your meal, log it in seconds
  • See every vitamin and mineral
QR code to get the EatBetter app

📸 Scan the code to get the app free.

The EatBetter app recognising potatoes, broccoli and salmon on a plate

How Many Calories in 1 Slice of White Flour Sourdough Bread?

ServingAmountCalories
1 slice (medium)35 g89 kcal
1 slice (thin)25 g64 kcal
1 piece (small)45 g115 kcal
1 slice (thick)50 g128 kcal
2 slice (medium)70 g179 kcal
1 piece (large)80 g204 kcal
100 g100 g255 kcal
1 serving (medium)100 g255 kcal
1 serving (large)150 g383 kcal

Calculated from 255 calories per 100 g.

Frequently Asked Questions About White Flour Sourdough Bread

Is white flour sourdough bread easier to digest than regular bread?

It can be easier for some people because fermentation may break down some fermentable carbohydrates, but it is not reliably easier for everyone. It still contains gluten, so it is not suitable for people with coeliac disease.

What makes white flour sourdough bread different from regular white bread?

White flour sourdough bread is leavened with a fermented starter containing wild yeasts and bacteria, rather than relying only on baker’s yeast. The longer fermentation gives it a tangier flavour and a different crumb, but it is still a processed bread.

Why is white flour sourdough bread so sour?

The sour taste comes from acids produced by bacteria in the starter as the dough ferments. A longer fermentation or a starter kept under different conditions can make the flavour sharper, so sourness varies from loaf to loaf.

How should you store white flour sourdough bread to keep it fresh?

Keep white flour sourdough bread at room temperature in a bread box or paper bag, with the cut side facing down. Avoid a warm, damp spot, where mould can develop faster; refrigeration can make the crumb go stale sooner.

Can you freeze white flour sourdough bread?

Yes. Slice the loaf, seal the slices in a freezer-safe bag, and freeze them. You can toast slices straight from frozen, which helps avoid thawing more bread than you need.

Why does white flour sourdough bread turn out gummy inside?

A gummy crumb often means the loaf was underbaked or sliced before it had cooled. Let the bread bake through, then cool it fully on a rack before cutting so steam can escape and the crumb can set.

Does toasting white flour sourdough bread change its effect on blood sugar?

Toasting can change the bread’s texture and may modestly affect the glucose response, but it does not remove its carbohydrates or guarantee a lower blood-sugar rise. Portion size and what you eat with it also matter.

Can you use white flour sourdough bread for French toast?

Yes. Its sturdy crumb absorbs egg-and-milk mixture well without falling apart, especially when the slices are a day old. Soak briefly, then cook over moderate heat until the center is set.

Why does white flour sourdough bread not rise properly?

An inactive starter, insufficient fermentation, or overproofing can leave white flour sourdough bread flat and dense. Use a lively starter and judge the dough by its rise and feel, rather than following the clock alone.

Can you eat white flour sourdough bread every day?

Yes, if it suits your needs and fits the way you eat. It is still made from refined white flour, so pairing it with foods such as eggs, beans, vegetables, or nut butter can make a meal more filling.

White Flour Sourdough Bread Vitamins & Minerals

Vitamins

B1

0.12mg · 10% DV

Folate

32.2µg · 8% DV

B3

1.19mg · 7% DV

B2

0.07mg · 5% DV

Minerals

Selenium

9.45µg · 17% DV

Manganese

0.17mg · 7% DV

Sodium

165mg · 7% DV

Iron

1.09mg · 6% DV

Potassium ⭐

44mg · 1% DV

White Flour Sourdough Bread Glycemic Index

GLYCEMIC INDEX

54
Medium
0 Low5570100

GLYCEMIC LOAD

8.4
Low

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

How to Burn Off White Flour Sourdough Bread

To burn the 89 calories in 1 slice (medium) (35 g):

🚶

22min

Walking (5 km/h)

🏃

9min

Running (8 km/h)

🚴

12min

Cycling

🏊

10min

Swimming

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

What is White Flour Sourdough Bread?

White Flour Sourdough Bread is made with white wheat flour, water and a sourdough starter, then left to ferment before baking. Sourdough baking has a long history in many regions, and the loaf is now enjoyed around the world. Fermentation gives it a mild tang, while the crust is often crisp and the crumb pleasantly chewy and airy.

It works well toasted at breakfast, as the base for sandwiches, or alongside soup and salads. It is mainly a source of carbohydrates, with 8.6 g of protein per 100 g. For a more sustaining meal, pair a slice with eggs, beans or fresh vegetables.

How Nutritious Is White Flour Sourdough Bread?

Nutrient density

Low

33/ 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

39/ 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.

Is White Flour 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 White Flour 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 White Flour Sourdough Bread Good For?

Vegan

✓ 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

White Flour Sourdough Bread Fat Profile

SATURATED

0.09g

MONOUNSATURATED

0.06g

POLYUNSATURATED

0.15g

⚖️

Omega 6:3 ratio 14:1

Above the ideal 4:1 (14:1).

Compare White Flour Sourdough Bread

🍞vs🍚
White Flour Sourdough Bread vs Bulgur Pilaf135 kcal more per 100 g
→
🍞vs🍝
White Flour Sourdough Bread vs Whole wheat pasta131 kcal more per 100 g
→
🍞vs🥖
White Flour Sourdough Bread vs Breadstick155 kcal fewer per 100 g
→
🍞vs🥯
White Flour Sourdough Bread vs Simit85 kcal fewer per 100 g
→

Foods Similar to White Flour Sourdough Bread

🍚

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

🍝

Pasta (Boiled)

155 kcal

Have another question about White Flour Sourdough Bread?

Ask the AI nutrition coach — calories, portions, alternatives and more, answered in seconds in the app.

EatBetter

Scan calories with your camera

Instant AI nutrition analysis

App StoreGoogle Play

Nutrition data compiled from USDA FoodData Central and scientific sources.