Sourdough Calculator

This scales a sourdough bread recipe by baker's percentage and takes the levain out of the totals properly. Enter the number of loaves, the dough weight each, the hydration, the salt and the levain percentage with its own hydration, and it returns exactly what to weigh into the bowl, the levain build as seed plus flour plus water, and the true hydration of the finished dough. Two further actions scale a bulk and proof time you already trust to a colder or warmer dough, and work out the water temperature that lands the mix on a target dough temperature. The timing model is a rate of thumb anchored on your own numbers, not a schedule.