What does a cold-ferment yeast calculator solve?
It estimates how much yeast to use for a dough schedule that includes room-temperature fermentation and cold time in the fridge.
Cold-ferment yeast.
Plan a long, slow rise. Enter your bulk and cold-ferment times and temperatures, and we size the yeast with the Q10 model so the dough is closer to your target window.
Measurement system
Room-temp bulk
Cold ferment (fridge)
Yeast
Set either section to 0 hours for a pure room-temp or pure cold ferment.
Yeast
1.3g
0.255% of floureffective 6.5°C
Weigh to the nearest 0.1g for best consistency.
The effective temperature is what holding the dough there for the whole time would equal in fermentation activity, weighted by the Q10 model, not a simple average.
Need the full formula? Open the dough calculator.
Useful guides.
Common questions.
Can I use it for pizza dough and bread?
Yes. The math is useful for pizza, sourdough-style hybrid doughs, focaccia, and lean bread formulas where yeast amount changes with time and temperature.
Why does temperature matter so much?
Fermentation speeds up as dough gets warmer and slows down as it gets colder. The calculator uses a Q10-style model to estimate that temperature effect.
Is the result exact?
No yeast calculator can know your flour, starter strength, fridge behavior, and handling perfectly. Treat the result as a strong starting point and adjust from your bake notes.