How do you calculate liquor proofs from the percentage on bottle?

You can calculate the liquor proof from the percentage on the bottle using a simple formula:

Proof = (Alcohol by Volume (ABV) * 2)

Here's how it works:

* ABV: This is the percentage of alcohol in the liquor, usually expressed as a decimal (e.g., 40% ABV = 0.40).

* Proof: This is a measure of the alcohol content in a spirit.

Example:

* A bottle of whiskey states it's 40% ABV.

* To find the proof, multiply 0.40 (ABV) by 2.

* 0.40 * 2 = 80 proof.

Important Note:

* In the United States, proof is defined as twice the percentage of alcohol by volume.

* In some other countries, proof may be a different measure, so be sure to check the label carefully.