Sourdough, worked out
Clear, researched guides to sourdough timing and baker's math, with the published sources behind every number linked on the page, plus free calculators that do the arithmetic for you.
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- Sourdough Starter: How to Make It, Feed It, and Fix It
Make one from scratch, choose a feeding ratio, and fix a starter that won't rise.
- Sourdough Bulk Fermentation: How Long It Takes at Every Temperature
Published bulk times compared by dough temperature, signs it's done, and a mixing-water calculator.
- Overnight and Same-Day Sourdough: Pick a Schedule That Fits Your Day
Four ways to use the night, three full timelines, and how long dough can wait in the fridge.
- A Weekend Sourdough Schedule You Can Print
Feed Friday, mix Saturday, bake Sunday, with a free printable and starter log.
- Sourdough Discard: Use It in Any Recipe, Store It Safely, Make Less of It
Swap discard into any recipe, see how long it keeps (sources compared), and make less of it.
- Baker's Percentages and Hydration, Explained (with a Calculator)
Read any recipe as percentages, count the water in your starter, and scale a loaf.
Free tools
- Sourdough Hydration Calculator (Baker's Percentage)
Free baker's percentage calculator: enter dough weight or flour weight, hydration, salt and starter, and get grams with the starter's flour and water counted.
- Sourdough Discard Swap Calculator (Any Hydration)
Work out how much flour and liquid to take out of a recipe when you add sourdough discard, for a starter at any hydration.
- Mixing Water Temperature Calculator for Sourdough
Find the water temperature that gets your sourdough to its target dough temperature, using the desired dough temperature formula. Works in °F or °C.
Bakers Percent is a small, independent site. Read how these guides are researched.