ABV Calculator

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.

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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.

Alcohol By Volume Calculator:

Gravity Unit:
Original Gravity (OG):
Final Gravity (FG):
Alcohol By Volume:
Apparent Attenuation:
Original Gravity:
Final Gravity: