Start with these calculators
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Sourdough starter hydration converter
Enter your starter's weight, its current hydration and the hydration you want. You see how much flour or water to add, step by step.
Sourdough starter calculators
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Sourdough discard recipe converter
Enter the flour and liquid of any recipe and the discard you want to use. You see how much flour and liquid to leave out so the dough stays the same.
Sourdough starter calculators
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Yeast to sourdough converter
Enter your yeast recipe and your starter. You see how much starter to use under several published rules of thumb, and how much flour and liquid to take out so the dough keeps its hydration.
Sourdough starter calculators
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Bread recipe scaling calculator
Enter your bread formula and how much dough you need, by flour weight, total dough weight or number of pieces. Every ingredient is scaled so the dough adds up exactly, loss margin included.
Bread dough calculators
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Desired dough temperature calculator
Enter the dough temperature you want and the temperatures of your flour, room and mixer. You get the water temperature that brings the dough there, in degrees Celsius or Fahrenheit.
Bread dough calculators
Sections
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Sourdough starter calculators
A starter is only flour and water in a known ratio. Once you split it into those two parts you can change its hydration, bake with discard, or swap it for yeast without changing the dough.
3 calculators
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Bread dough calculators
Two numbers decide most of a bake before the oven is on: how much dough you mix and how warm it is when mixing ends. These calculators work both out from the figures you already have.
2 calculators
How the results are checked
Every formula is written twice, by independent implementations, and both must agree on published worked examples and on random inputs before a page goes online.