ABV Calculator (Brewing)
Work out alcohol by volume from original and final gravity. The result updates as you type, with the working underneath so you can check it.
Your details
Result
Alcohol by volume
5.34%
- Simple formula
- 5.25%
- Apparent attenuation
- 80.0%
Good to know: ABV = (OG − FG) × 131.25
About this tool
Formula
ABV = (OG − FG) × 131.25
Questions people ask
What are OG and FG?
Original gravity is the density of the sugar liquid before fermentation, final gravity after. The drop shows how much sugar became alcohol.
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How we calculate this
We use the standard published formula or definition for this calculation, and we show the working so you can check it.
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