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%.