About ABV Tools

ABV Tools is a set of free calculators for people who measure alcohol: home and craft brewers, winemakers, cider and mead makers, and distillers. The calculators work in your browser without an account.

Who makes it

ABV Tools is made by the developer of ABV Corrector, an iPhone app for alcohol temperature correction, dilution and brewing calculations. The alcohol temperature correction and dilution calculators on this site use the same reference tables as the app.

How we approach accuracy

• Each calculator page states the formula or method it uses, with a worked example.
• Brewing estimates, such as ABV from gravity, are labelled as estimates.
• Where a table or formula does not cover your inputs, the calculator shows no result rather than an extrapolated guess.
• Calculations are covered by automated tests that run before every release.

Results are for general information. For legal, tax or labelling purposes, use the measurement methods required by your regulator and calibrated instruments.

Calculators

• Alcohol Temperature Correction Calculator — Correct alcohol readings to the standard 20°C reference temperature.
• ABV Calculator — Calculate alcohol by volume from original and final gravity.
• ABV to Proof Calculator — Convert between ABV and alcohol proof.
• Alcohol Dilution Calculator — Calculate how much water is needed to reach a target alcohol strength.
• Hydrometer Temperature Correction Calculator — Correct hydrometer readings for sample temperature.

Contact

Found an error or have a suggestion? Use the support link on theABV Corrector App Store page.