Proofing Time Calculator

Adjust dough proofing time for room temperature using a doubling-per-10-degrees rule.

Usage Tip

A cooler, slower proof develops more flavour; a warm spot speeds things up.

Proofing Time
— hours
At your temperature
THE MATH
time = base time × 2^((24 − temp) ÷ 10)
Fermentation roughly doubles in speed for every 10°C rise in temperature.
This is an estimate; watch the dough (it should roughly double) rather than the clock.
Scroll to Top

The calculators and tools on Formula Factory are provided for general guidance and informational purposes only. Results are estimates based on standard formulas and the values you enter — they do not constitute professional engineering, electrical, or architectural advice. Always verify calculations with a qualified professional before making decisions for any safety-critical, code-compliance, or commercial application. Formula Factory makes no representations or warranties as to the accuracy or completeness of any result, and accepts no liability for errors, omissions, or any outcomes arising from reliance on this information.