How can proof be calculated for an alcoholic beverage?

Proof is a measure of the strength of an alcoholic beverage and is understood to be twice the percentage of alcohol by volume (ABV). Therefore, to calculate the proof of an alcoholic beverage, you would multiply the alcohol percent by volume by 2.

For example, if a beverage has an alcohol content of 10% ABV, the proof would be calculated as follows: (10% \times 2 = 20) proof. This is the standard way to express the strength of the alcoholic content in the United States.

Using this understanding, multiplying the alcohol percent by volume by 2 gives you the correct conversion from alcohol content to proof, making this the appropriate approach for calculating proof consistently across different alcoholic beverages.