Dough Hydration Calculator for Sourdough & Yeast

Jennifer Hall
May 23, 2026
2:58 pm
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Dough hydration is the ratio of water to flour in a recipe, shown as a percentage. It affects how your dough feels, how easily it’s handled, and how it ferments and bakes.

Use the calculators below to quickly find the hydration of your sourdough or yeast dough, along with baker’s percentages—no math needed.

Sourdough Hydration Calculator

Enter your ingredients to calculate hydration and baker's percentages. Starter water is included.

Flour (g) Liquid / Water (g/ml) Starter (g, usually 100% hydration) Salt (g) Other optional ingredients (g)

Yeast Dough Calculator

Enter your ingredients to calculate hydration and baker's percentages.

Flour (g) Liquid / Water (g) Salt (g) Sugar (g, optional) Fat (g, optional, butter/oil/egg) Yeast (g)

Frequently Asked Questions

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Hi, I’m Jenn, the food blogger behind this calculator.

I created this tool to help bakers better understand dough hydration and baker’s percentages, making it easier to adjust recipes with confidence.

Whether you’re converting a favorite recipe to einkorn flour or simply adjusting hydration based on how your dough feels and behaves, this calculator takes the guesswork out of the math so you can focus on baking.

If you’d like to learn more about baking with einkorn flour, check out the articles below.