Sourdough tools
Free sourdough calculators
Practical tools for starter timing, feeding ratios, bulk fermentation, and baker’s percentage math.
Is my sourdough starter ready to bake?
Check if your sourdough starter is ready to bake. Score doubling time, bubbles, aroma, age, peak behavior, and float-test reliability.
Sourdough feeding schedule calculator
Calculate when to feed your sourdough starter so it peaks near bake time. Includes 1:1:1, 1:2:2, 1:5:5 ratios, grams, and Fahrenheit defaults.
Bulk fermentation timing calculator
Estimate sourdough bulk fermentation time from dough temperature, starter percentage, dough weight, and target rise before shaping.
Sourdough hydration calculator
Calculate true sourdough hydration by including flour and water from your starter or levain. Built for baker’s percentage math.