Boil-Off Calculator

Calculate pre-boil volume and estimate post-boil gravity based on your boil-off rate.

Boil Time (min)

Boil-Off Rate (gal/hr)

Target Post-Boil (gal)

Pre-Boil Gravity (SG)

Know exactly how much wort to collect before the boil to hit your target volume.

Estimates how gravity concentrates as water evaporates during the boil.

Enter your system's specific boil-off rate for accurate calculations.

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