Tools

Baking calculators

Precision tools for bread and cake — feeding ratios, formulas, hydration, and pan swaps.

01 Sourdough starter Feeding ratios, discard, peak windows 02 Baker's percentage Build or reverse a formula 03 Bread hydration Levain-aware true hydration 04 Pan size converter Scale a recipe to your pan 05 High-altitude baking Adjust for elevation 06 Oven temp & gas mark °C / °F / fan / gas 07 Yeast converter Active dry / instant / fresh 08 Egg size converter Swap S/M/L/XL/jumbo by weight

Guides

▸How to feed a sourdough starter ▸How to make a sourdough starter from scratch ▸The 1:1:1 sourdough feeding ratio explained ▸The 1:2:2 sourdough feeding ratio (the all-rounder) ▸The 1:5:5 sourdough feeding ratio (the overnight build) ▸How to know when your sourdough starter is ready ▸What to do with sourdough discard ▸Why isn't my sourdough starter rising? ▸How to convert pan sizes (the formula) ▸How to calculate baker's percentage ▸What bread hydration means (and how to calculate it)