# Online ABV Calculator

## This easy-to-use alcohol by volume calculator allows you to get the ABV based on gravity change. You can use the simple standard equation that is loved by home beer brewers; or the alternate more compex but more precise formula. Our ABV calculator works with either Plato or Standard Gravity units.

# Standard ABV Formula

Formula

The standard formula to get the ABV based on gravity change is:

abv = (original in SG - final) in SG * 131.25

While slightly less precise, the standard ABV equation is the most usable for home brewers who aren't into mathematics.

# Alternate ABV Formula

Formula

The alternate, more complex formula to get the ABV based on gravity change is:

abv = ( 76.08 * ( original in SG - final in SG ) / ( 1.775 - original in SG ) ) * ( final in SG / 0.794 )

This is an advanced equation that provides a more accurate alcohol by volume measure. Especially with more alcoholic brews as the differences in precision grows between both methods.