ABV and Gravity Calculator. Calculates alcohol by volume given a change in specific gravity. Enter your original gravity (OG) reading and your final gravity reading (FG) and you can calculate the ABV of your batch. This calculator makes the process easy! Remember that temperature can effect your OG and FG readings when you are using a hydrometer, so it is important to adjust your hydrometer reading based on your thermometer reading.
Note: Unless otherwise labeled, volumes are in US gallons.
Legal Disclaimer: The ABV calculator is for entertainment purposes and should not be used for professional brewing. No warranty or guarantee of accuracy is provided on the information provided by this calculator.
This article was updated January 21st 2021