Alcohol & ABV

Proof Calculator

Convert between the US proof scale and alcohol by volume. Other countries may define proof differently, so this tool uses the US convention.

Enter your measurements

Convert alcohol by volume to US proof and back.

Good to know

Does proof mean the same thing everywhere?

No. This calculator uses the modern US definition, where proof is twice ABV.

Can I enter proof instead?

Enter the ABV value for the primary result; the result also displays the corresponding proof.

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