ABV (drink strength)
Calculate ABV (drink strength) instantly with the exact formula and a worked example.
ABV (drink strength)
Original gravity (OG)
Final gravity (FG)
ABV
5.25%
Refined formula
5.34%
Apparent attenuation
80%
Alcohol by weight (ABW)
4.1%
More about: ABV (drink strength)
What it calculates
The “ABV (drink strength)” calculator computes ABV in % from 2 parameters: original gravity (og), final gravity (fg).
For following a recipe precisely and scaling portions.
Example calculation
With parameters Original gravity (OG) = 1.05, Final gravity (FG) = 1.01 the result is 5.25 %.
How to use
- Enter original gravity (og) and final gravity (fg) — each field above is adjustable with a slider.
- ABV (%) is calculated automatically as you type.
- Check the worked example below to see the formula applied to real numbers.
- Copy the result or bookmark this calculator.
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FAQ
How is ABV (drink strength) calculated?
The ABV (drink strength) calculator computes ABV (in %) from original gravity (og), final gravity (fg). Enter your values above and the exact formula is applied instantly; a worked example with real numbers is shown below.
Is the ABV (drink strength) calculator free?
Yes. It is completely free, needs no signup, runs entirely in your browser, and sends no data to any server.
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