๐ณ Cooking & Baking
Sourdough Hydration Calculator
Starter is half flour and half water at 100% hydration, so adding it changes both sides of the hydration calculation. The true hydration is always slightly lower than the water you poured in.
How it works
Flour added
Water added
Starter
Starter hydration
True hydration
Total flour
Total water
Total dough weight
Frequently asked questions
How do I use the Sourdough Hydration Calculator?
Fill in the fields above โ the result recalculates instantly as you type. Everything runs in your browser, so the values you enter are never collected or stored.
Is this calculator free?
Yes. It is completely free, requires no account, and works on phones, tablets and desktops.