Alcohol By Volume ABV Calculator
Finds ABV based on gravity change. If you took an original gravity reading (or had estimated OG), and also took a final gravity (FG) reading prior to adding priming sugar at bottling you can find out your batch's alcohol by volume ABV.

Alcohol By Volume Calculator:
Gravity Unit:
Original Gravity (OG):
Final Gravity (FG):
Equation:

(see below for more information)
 

Alcohol By Volume:
Apparent Attenuation:
Calories:
Original Gravity:
Final Gravity:


This calculator allows you to choose between the standard equation or the alternate equation. If you don't know the difference, just stick with the standard equation.

Update April, 2013: Now supports Plato and SG for inputs and reports apparent attenuation, calories, and the OG/FG in both sugar scales. The calories equation is independent of the ABV equation, and is derived from ["Caloric Content, Beer-33" in: American Society of Brewing Chemists, 1992, Methods of Analysis of the ASBC. American Society of Brewing Chemists; Homebrew Digest 800-9], complete details here: http://hbd.org/ensmingr/.