Dough Temperature Calculator

In short Fermentation speed depends on dough temperature far more than on the clock, so bakers aim at a desired dough temperature and adjust the water to hit it. The formula is simple: multiply the target by the number of temperatures going into the dough, then subtract each of them. For a straight dough that is flour, room and water, so the multiplier is three; add a preferment and it becomes four. This page runs the calculation and then puts the answer back through the formula as a check, because arithmetic this easy to get backwards deserves it. The one input that is not a measurement is the FRICTION FACTOR — how much your mixer heats the dough as it works. It is not a constant and no table can give it to you: it depends on the machine, the speed and how long you run it, and it ranges from a degree or two for hand kneading to eight or ten for a spiral mixer on a long mix. Measure it once and everything else here becomes accurate. Mix a batch, take the dough temperature at the end, and the gap between that and what this predicts IS your friction factor. Two practical limits. If the formula asks for water below freezing you cannot pour it, so use iced water and accept a warmer dough, or chill the flour instead. And above roughly 50 to 55°C water starts damaging yeast, so warm the flour or the room rather than the water.