Spirits Proofing Calculator

A distillery's best friend. This application allows you to determine the true proof of an alcoholic solution at 60 degrees Fahrenheit, without requiring a manual interpolation derived from the approved data tables and charts. Our formula will yield accurate, repeatable determinations of true proof with adjustments for:

temperature correction
thermometer calibration (if provided)
hydrometer calibration (if provided)

This powerful application combined with carefully calibrated precision hydrometers and thermometers will yield accurate, repeatable determinations of true proof in your finished spirits.

*This application cannot determine the true proof of spirits containing more than 400 milligrams per 100 milliliters of suspended material (sugar, sediment from infusion, etc.). This determination requires an obscuration adjustment determined by specific procedures described in 27 CFR Part 30.32