AlcoTables replaces the printed alcohol tables on the bench with a calculator you carry with you. Enter what you actually measured — alcoholometer or hydrometer reading, density, temperature, alcoholic strength by mass or by volume — and read the exact value straight away. Every result follows OIML R 22, the International Alcoholometric Tables for ethanol–water mixtures, at the 20 °C reference temperature used across the UK, Ireland and the EU.

WHAT YOU CAN CALCULATE
• Correct an alcoholometer or hydrometer reading to the 20 °C reference temperature
• Convert alcoholic strength by volume (ABV, % vol) to strength by mass (% w/w) and back
• Get density from alcoholic strength, or alcoholic strength from density at 20 °C — the job a laboratory alcohol table does
• Reduce a high-strength spirit to bottling strength, with the real alcohol–water volume contraction accounted for
• Find the pure ethanol volume in 100 dm³ or 100 kg of mixture — the basis for the litres of pure alcohol (LPA) on a duty return
• Cross-check a digital density meter against a glass hydrometer

WHO IT IS FOR
Craft and commercial distillers reducing gin, vodka, rum, whisky and fruit spirits to bottling strength, or working out cask strength after years in the warehouse. Scotch, Irish and English whisky producers checking casks and blends. Producers holding an Alcoholic Products Producer Approval who report litres of pure alcohol to HMRC. Duty-suspension and bonded warehouse staff. Winemakers fortifying wine and gauging distillates. Liqueur makers hitting a target ABV. Laboratory and QC technicians converting density readings taken at 20 °C. Pharmacists and compounding labs diluting 96% ethanol to 70% or 80% v/v for tinctures and hand rubs. Perfumers cutting perfumer's alcohol to a working strength. Brewing, distilling and food science students learning alcoholometry.

REPLACES THE PRINTED VOLUMES
The same conversions you would look up in Practical Alcohol Tables, in an alcohol tables booklet for alcoholometers and alcohol hydrometers, or in a laboratory alcohol table — without carrying a binder between the still house, the lab and the desk.

ALL 20 TABLES IN ONE INDEX
• Table I and II — density from temperature and strength by mass or by volume
• Table IIIa/IIIb and IVa/IVb — density at 20 °C, and strength by mass to strength by volume conversions
• Table Va/Vb — alcoholic strength from density at 20 °C
• Table VI and VII — alcoholic strength from an observed density and temperature
• Table VIIIa/VIIIb — corrected strength from a soda-lime glass alcoholmeter
• Table IXa/IXb — strength from a soda-lime glass hydrometer
• Table Xa/Xb — strength from a borosilicate glass instrument
• Table XIa/XIb — pure ethanol volume at 20 °C in 100 dm³ of mixture
• Table XIIa/XIIb — pure ethanol volume at 20 °C in 100 kg of mixture

WHY ALCOTABLES
• Offline by design: the tables work in a cellar, a still house or a lab with no signal
• Complete: all 20 tables in one consistent, quick-to-scan index
• Shows its working: table, formula, inputs and reference temperature stay on screen, so no number arrives unexplained
• Fast: pick a table, set the values, read the result — no page flipping
• Everywhere: the same calculators on phone, tablet, desktop and in the browser
• Six languages: English, German, French, Italian, Spanish and Polish
• Metric throughout, with % vol, % mass, kg/m³ and °C

IMPORTANT
AlcoTables is a calculation aid for mixtures of ethanol and water only. Sugar, extract, methanol and dissolved solids are not modelled, and results are valid inside the OIML R 22 range of −20 to +40 °C and 0 to 100% alcohol. It works to the metric 20 °C reference and does not produce US proof, proof gallons or 60 °F gauging figures. For duty returns and any legally binding measurement, use calibrated, verified instruments and the official tables that apply in your jurisdiction.