What is DistilCalc?
DistilCalc is a free suite of 40 precision calculators and 42 distilling guides for home distillers and craft spirits producers. Every tool and guide is built to be accurate, practical, and usable without any registration or fees.
Where most free distilling calculators use simplified formulas, DistilCalc applies the same methods used by professional distilleries: OIML density tables for dilution, NBS/NIST Circular 19 for alcoholometer temperature correction, ICUMSA polynomials for Brix conversion, the Terrill correlation for refractometer readings, and vapor-liquid equilibrium data for the still simulators. In August 2026 every formula on the site was audited line by line against these primary sources; the full audit is documented on the methodology page.
The Calculators
Who Built This?
DistilCalc is built and maintained by Cameron Liefsoens, a home distiller and fermentation hobbyist based in Belgium, currently progressing through his chemistry degree (Professionele Bachelor Chemie). Every calculator and guide on this site is checked against primary sources such as the OIML alcoholometric tables, TTB regulations and peer-reviewed literature, and each page lists its references so the working can be verified rather than taken on trust. He is also the author of Food and Flavor Chemistry for Brewers, The Complete Home Brewer’s and Distiller’s Handbook, and the DistilCalc series of whisky, beer and wine tasting journals.
The motivation was straightforward — the free distilling calculators available online were either too simple, inaccurate, or buried in cluttered interfaces. A clean, scientifically accurate alternative was needed.
The site is independently operated with no commercial affiliations to any distilling equipment brand or ingredient supplier. All calculators are and will remain free to use.
Accuracy and Limitations
DistilCalc uses established scientific formulas and official measurement standards. However, all results are estimates. Actual distillation outcomes depend on equipment, temperature, yeast health, and many other variables that cannot be modelled in a calculator.
For legally regulated purposes such as commercial spirit production, excise duty calculations, or medical applications, always use certified laboratory analysis and consult qualified professionals.
Always distil responsibly and in compliance with the laws of your country. Home distillation is legal in some jurisdictions and illegal in others. It is your responsibility to know and comply with local regulations.
Contact
Questions, corrections, or suggestions?
hello@distilcalc.com