Sourdough Bread Calculator | Hydration & Flour Ratios

🍞 Sourdough Bread Calculator

Calculate exact flour, water, starter, and salt using baker's percentages

Quick Presets
Output Unit
Dough Settings
🍞 Your Sourdough Formula
Flour
-- g
Water
-- g
Starter
-- g
Salt
-- g
Total Dough Weight--
Hydration--
Flour Type--
Estimated Loaf Weight--
Hydration Reference
65%Beginner
70%Standard
80%Open Crumb
90%Advanced
Hydration Level Guide
Hydration Dough Feel Crumb Structure Best For
60–65%Stiff, easy to handleTight, denseBeginners, sandwich loaves
68–72%Smooth, workableSemi-openEveryday sourdough
75–80%Slightly stickyOpen, airyArtisan country loaves
82–87%Very stickyVery open, irregularBaguettes, experienced bakers
88%+Slack, wetLacy, large holesCiabatta, advanced bakers
Baker's Percentage Reference (per 500g flour)
Ingredient Baker's % Amount (g) Notes
Flour100%500 gAlways the base
Water (70%)70%350 gAdjust to hydration
Starter20%100 gActive & bubbly
Salt2%10 gNever skip
Total Dough192%960 g≈800g baked loaf
Nutrition Facts (per 1 slice, 40g sourdough)
101Calories
4gProtein
0.5gFat
20gCarbs
Starter percentage matters: Using 15–20% starter gives a slower, more flavorful fermentation. Using 25–30% speeds things up but reduces tang. Adjust based on your schedule and taste preference.
Autolyse first: Mix flour and water and var them rest 30–60 minutes before adding starter and salt. This develops gluten naturally and makes shaping much easier.

 

Sourdough bread is made of dough that rises without help of outside agents. Rather than commercial yeast or chemical additives like baking powder or baking soda, it depends on natural starter for rise. The typical sourness of that bread results from the activity of bacteria and wild yeast in the dough.

Those wild tiny organisms come from the environment what becomes truly wonderful if one thinks about the cause.

What Is Sourdough Bread

Natural starter is a living culture from flour and water, that ferments. There are various kinds of such starters. One can prepare them, buy or receive from other bakers.

During the making of dough, one adds part of the starter in it. Later, one fills the container with fresh flour and water, to replace the used amount.

Regular bread relies on commercial yeast, namely one species called Saccharomyces cerevisiae. This is the same as the yeast for brewing, only in a slightly different state. Store breads usually carry sweetener, for instance honey, corn syrup or sugar.

Sourdough bread, on the other hand, uses wild yeast and bacteria, what requires longer and slow rise to develop its rich flavour.

Ideal sourdough bread loaves have airy and light insides, with crisp brown crust outside. The texture is rough and chewy. The bubbles in the crust form thanks too high humidity and heat during the bake.

Some recipes give bread with soft, common centre. Others favour crusty surface with fluffy interior.

Some recipes are so simple, that they do not require any kneading. For instance, one only mixes the ingredients, leaves to rest, lays the wet dough in a baking form, waits more and bakes. Some methods use little amount of starter, what means long fermentation, so that the dough can rise the whole day or even overnight.

Sourdough bread one can prepare fully vegan, although some bakers include ingredients from animal origin. Various flours work well. Whole grains like whole wheat, rye or others work, and one can add raisins, olives, spices or dark chocolate for variety.

Multigrain mix offers fresh flavour range.

That kind of bread beats store bought breads, because it raises the blood sugar less. It holds also fewer harmful things called phytates, that block the taking in of nutrients. In a correctly prepared version, natural enzymes strongly reduce the gluten, what helps folks with gluten sensitivity.

But it does stay gluten rich, so it does not work for celiac illness. At the end of everything, it is only bread, and too much ofit can cause weight gain.

Sourdough bread goes with many dishes. It works well for avocado toast. Same does onion soup or a plate with cheeses, pickles, fruits and cured meats.

One other nice idea is to dip it in olive oil, lightly toast and rub with raw garlic.

 

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