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Bread calculator

Bread Hydration Calculator

Enter your flour weight and target percentages. Everything else is a percentage of the flour, the way bakers write formulas.

Free · No sign-up · Updated October 2026

Flour
Water
Salt
Starter
Total dough

True hydration (starter included):

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What hydration should I use?

BreadTypical hydration
Bagels, pretzels55–60%
Sandwich loaf60–65%
Classic sourdough70–75%
Open-crumb sourdough78–85%
Ciabatta, focaccia80–90%

Baker's starter kit

A 0.1 g precision scale for salt and yeast, a banneton and a Dutch oven make the biggest difference to home loaves. See sourdough kits →

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FAQ

What is a good hydration for beginner sourdough?

Around 68–70%. It's soft enough for a good crumb but still easy to shape. Raise the water 2% at a time once your loaves are consistent.

Does the starter count towards hydration?

Yes. A 100% hydration starter is half flour and half water, so it adds to both. This calculator shows the true hydration with the starter included.

How much salt should bread have?

Most bread uses 1.8–2.2% salt relative to the flour weight. 2% is a reliable default.

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