Sourdough Hydration Calculator - Showcase Project
Listed October 22, 2026
About Sourdough Hydration Calculator
Free sourdough hydration & baker's percentage calculator
A free, single-page web tool for home bakers. Enter a total dough weight, the number of loaves, and your water, starter and salt percentages, and it returns exact weights in grams or ounces. It also shows the true hydration of the dough once the flour and water inside your starter are counted. A reverse mode works out the hydration of a dough you've already mixed. No sign-up, no ads, no analytics. Short guides cover hydration, starter percentage, levain ratios, dough temperature, pan sizes and flour types. An optional $2.99 printable PDF cheat sheet pack is available.