HOW TO CALCULATE ABV (ALCOHOL BY VOLUME)
Use this formula to calculate the ABV of liqueurs and bitters.
Formula
(volume of liquor ingredients × percentage of alcohol by volume) / total volume of ingredients
Example
You are making bitters by combining 1 1/2 ounces of tincture made with 50% ABV (100-proof) liquor with 1/4 ounce distilled water and 1/8 ounce sugar syrup
(1.5 × .50) / (1.5 + 0.25 + 0.125) = 0.40
So the resulting bitters are 40% ABV or 80-proof
Or… GET my ABV Calculator Spreadsheet!
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Note: Please make a copy of the sheet for your own use. To do this, go to the File menu and select “Make a copy.” Alternatively, in the File menu, there is also an option to download the document as an Excel file.