Fermentation Temperature Time Adjuster
Fermentation speed roughly doubles or halves for every 10°C (18°F) change in temperature. Enter your recipe's reference time and temperature along with your actual room or fridge temperature to estimate how long fermentation will actually take.
About this calculator
Estimate how fermentation time changes for bread dough or brewing based on ambient temperature versus a recipe's reference temperature.
Frequently Asked Questions
What is Q10 in fermentation?
Q10 describes how much a biological rate (like yeast fermentation) changes for every 10°C shift in temperature. A Q10 of 2.5 means the rate is 2.5x faster for every 10°C increase.
Does this work for cold retarding dough in the fridge?
Yes. Enter your fridge temperature as the actual temperature; the calculator will show a much longer estimated time since fermentation slows dramatically in the cold.
Is this exact?
No, it's an approximation. Actual fermentation also depends on yeast quantity, hydration, and dough composition, but this gives a solid starting estimate.