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# SG to ABV Calculator Online

The SG to ABV Calculator is used to convert specific gravity (SG) measurements into Alcohol By Volume (ABV). Specific gravity is the ratio of the density of a substance to the density of water. In brewing, the Original Gravity (OG) is measured before fermentation begins, and the Final Gravity (FG) is measured after fermentation is complete. The difference between these values indicates how much sugar has been converted into alcohol.

Using the SG to ABV Calculator, brewers can accurately determine the alcohol content of their beer, ensuring it meets their desired specifications.

## Formula of SG to ABV Calculator

The formula for calculating ABV is:

where:

• OG is the Original Gravity, the specific gravity before fermentation.
• FG is the Final Gravity, the specific gravity after fermentation.

### Calculation Steps

1. Measure the Original Gravity (OG) before fermentation.
2. Measure the Final Gravity (FG) after fermentation.
3. Subtract the Final Gravity (FG) from the Original Gravity (OG).
4. Multiply the result by 131.25 to get the ABV.

## Conversion Table

Here is a table with common OG and FG values and their corresponding ABV:

## Example of SG to ABV Calculator

Let’s calculate the ABV for a beer with an Original Gravity (OG) of 1.065 and a Final Gravity (FG) of 1.010.

1. Original Gravity (OG): 1.065
2. Final Gravity (FG): 1.010
3. Subtract FG from OG: 1.065−1.010=0.055
4. Multiply the result by 131.25: 0.055×131.25=7.22