Pre-ferment Calculator

Free pre-ferment calculator. Calculate poolish, biga, or levain quantities. Splits flour and water correctly between preferment and main dough.

Free browser tool · No signup · Built by a baker · About BreadHydration

% of total flour
Baker's %
Ad Suggested Equipment
$16.99

KneadAce Pro Sourdough Starter Kit (34 oz)

4.7 (3,000 reviews)

Wide-mouth glass fermentation jar with feeding tracker band, printed measurement markings, stick-on thermometer, and breathable cloth and silicone covers. The perfect all-in-one environment for maintaining a healthy sourdough starter.

  • Wide opening makes feeding, mixing, and cleaning simple
  • Thermometer strip tracks optimal fermentation temperature
  • Day-marked tracker band monitors starter rise and growth