Processing math: 100%

Alcohol by Volume (ABV) Calculator

Formula

The formula to calculate the Alcohol by Volume (ABV) is:

$ABV = (OG - FG) \times 131.25$

Where:

$ABV$ is the Alcohol by Volume (%)
$OG$ is the original gravity (specific gravity before fermentation)
$FG$ is the final gravity (specific gravity after fermentation)

What is Alcohol by Volume (ABV)?

Alcohol by Volume (ABV) is a standard measure used worldwide to quantify the amount of alcohol (ethanol) contained in an alcoholic beverage. It is expressed as a percentage that represents the volume of pure ethanol as a proportion of the total volume of the beverage. For example, a beverage with an ABV of 5% means that 5% of the total volume of the beverage is pure alcohol. This measure helps consumers understand the strength of the alcoholic beverage.

Example Calculation 1

Let's assume the following values:

Original Gravity (OG) = 1.080
Final Gravity (FG) = 1.020

Using the formula:

$ABV = (1.080 - 1.020) \times 131.25 = 7.88\%$

The Alcohol by Volume (ABV) is 7.88%.

Example Calculation 2

Let's assume the following values:

Original Gravity (OG) = 1.050
Final Gravity (FG) = 1.010

Using the formula:

$ABV = (1.050 - 1.010) \times 131.25 = 5.25\%$

The Alcohol by Volume (ABV) is 5.25%.