Dilution and Boil Off Gravity Calculator

Calculates how much you need to dilute or boil down your wort volume to hit a certain gravity. Helps you hit the correct wort volume and target gravity for your home brewed beer!

There are two ways to look at this, which is why there are two calculators below.

Notes:
Reports the new volume in the same units the current volume was provided in.

If the new volume is above the current volume, top off with water (only use water you know is from a clean source, such as bottled spring water, water you prepared in advance). Tap water is okay, but often contains a little chlorine which you may notice in your beer.

If the new volume is below the current volume, boil the wort to evaporate some of the current volume.