United States calculator
Build a sourdough formula with baker’s percentages
Enter total flour, hydration, starter amount/hydration and salt to calculate flour and water contributions correctly.
baker’s percentage formula
Project inputs
Sourdough Ratio Calculator results
How this Sourdough Ratio Calculator works
Starter flour and water are separated before calculating what must be added, preventing double-counting common in simple ratio tools.
Important: Flour absorption and fermentation depend on temperature, flour and starter activity.
What assumptions should I verify?
Check every entered quantity, unit, rate and rule against the current U.S. source that applies to your project. The calculator does not silently substitute worldwide conventions.
Is information sent anywhere?
No. Calculations run locally in the browser and the module contains no analytics, remote requests or stored personal data.