Calculators

The blending math, as tools

Every formula in the school, as a calculator you can use right now. No signup, nothing to install. The same arithmetic runs inside the app on every pour.

Blend Proof CalculatorEnter what is going into the glass or bottle.Whiskey Dilution CalculatorWater is the one ingredient with a proof of zero, which makes its math exact.Headroom CalculatorNot 'what will the proof be' but 'how much can I pour before I cross my line.Proof to ABV ConverterIn the United States, proof is exactly double ABV.Bottle Split CalculatorSplitting a bottle produces two bottles at the same proof with proportional shares of every component.

The app that keeps these books for you

Thief & Blend tracks every pour, runs the proof math live, and remembers how much of the first pour survives. On the App Store for iPhone.

DOWNLOAD FOR iOS