Choose what you're solving for, enter your figures, and calculate. This is a working guideline built from studio field practice — always taste and adjust from there.
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The Dilution & ABV Calculator is free to use once you're signed in — every input, every calculation, every result. No card required. A paid Studio Membership is optional and adds saving to your Field Log, CSV export, named presets, and sync across every device.
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Field notes
Ice dilution isn't optional
Every stirred or shaken drink is diluted by design — the water from melting ice is part of the recipe, not a mistake. A drink that tastes "right" straight from the shaker will usually taste thin and cold at first sip, then balanced a minute later as it opens up. The pour-style buttons above build that expected melt into your target ABV instead of leaving you to guess it.
Proof vs. ABV
US proof is simply double the ABV — 40% ABV is 80 proof, 57.5% is 115 proof. Every result here shows both, since bottle labels and bartenders switch between the two constantly, especially with American whiskey.
Batching for a bottle count
Hitting an exact target volume is useful for a recipe card, but bottling is easier in round numbers. When your batch volume lands close to a clean multiple of a standard bottle size, batch mode will suggest rounding to it — up or down, whichever is closer — so you're not left with an awkward half-full bottle.
Blending is conservation, not approximation
The blend mode is exact: total alcohol in equals total alcohol out, so the resulting ABV is a genuine calculation rather than an estimate. The uncertainty in any real batch comes from your input figures — a bottle labelled 40% may not be exactly 40% — not from the maths.
Dilution is not reversible
You can always add water; you cannot take it out. Approach a target from below, especially when batching, and remember that a batch sitting on ice in service keeps diluting after you have stopped measuring.
Where this fits with your other tools
Bringing an over-proof infusion down to pouring strength is usually the step right after building it — the Infusion Calculator sends overstrength results here to finish the dilution math. Once a batch is mixed and diluted, the Shelf Life & Storage Calculator is the natural next stop for how long it'll hold.
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