Spirit Blending Calculator
Choose your blending goal
How the Blending Formulas Work
Blend → ABV uses simple weighted average of alcohol volumes. Since you are mixing two spirits (both containing ethanol), volume contraction is minimal compared to spirit + water blending:
Target ABV → Volumes uses the Pearson's Square method — a classic blending calculation used in commercial distilleries. Given two spirit strengths and a target, it finds the proportion of each needed:
If you provide a total volume, the calculator converts this ratio into exact volumes. If not, it gives you the ratio so you can scale to any batch size.
Common Blending Scenarios
Blending batches from the same still — Two runs may come out at slightly different ABVs. Blend them to create a consistent spirit before diluting to bottling strength.
New make + aged spirit — A high-ABV new make blended with a lower-ABV aged spirit to hit a target strength while preserving barrel flavour.
Neutral spirit + flavoured base — Blending a neutral high-ABV spirit with a lower-ABV fruit or botanical distillate to reach a final bottling ABV.
Adding water (ABV = 0%) — For pure water addition, use our ABV Dilution Calculator which applies OIML density correction for precise results.