Disclaimer

Content on Alcometer.org is provided for educational and informational purposes only and does not constitute medical advice, diagnosis, or treatment. Always seek the advice of a qualified physician, addiction specialist, or other licensed healthcare provider with any questions you may have regarding alcohol use, alcohol-related health conditions, or interactions between alcohol and medications you take.

Never disregard professional medical advice or delay in seeking it because of something you have read on Alcometer.org. If you think you or someone else is experiencing acute alcohol poisoning — symptoms include confusion, vomiting while semi-conscious, slow or irregular breathing, hypothermia, or loss of consciousness — contact emergency services immediately.

Legal blood-alcohol thresholds vary widely by jurisdiction, offence type (standard vs. aggravated DUI), and driver category (professional, novice, commercial). Thresholds, penalties, enforcement mechanisms, and evidential procedures change over time. While we work to keep the legal-limit tables accurate — and cite primary sources (ETSC, WHO, national gazettes) on the Methodology page — we cannot warrant that every figure is current and complete for every jurisdiction at every moment.

Content on this site is not legal counsel. If you need legal advice about a drink-driving charge, impaired-driving allegation, or any other alcohol-related legal matter, consult a lawyer admitted to practice in the relevant jurisdiction. The operator is not a lawyer and provides no legal advice.

Alcometer is an educational estimator. It is not a certified breathalyser, not a blood-alcohol measurement, and not admissible evidence in any criminal, civil, administrative, employment, or insurance proceeding.

You may not use screenshots, exports, or on-screen numbers from this site to prove or disprove intoxication, to challenge an official test result, or to support enforcement action. Only instruments and procedures that meet your jurisdiction's statutory requirements carry evidential weight.

BAC estimates are produced using the Widmark formula with an elimination-rate model calibrated against published literature. Inputs (body weight, drinks, time, sex, body composition) are used to estimate a BAC trajectory. However:

• The formula assumes complete absorption of the ingested alcohol. In reality, absorption varies with meal content, gastric emptying rate, and individual metabolism.

• The standard elimination rate (roughly 0.015–0.020 g/dL/h in men, slightly lower in women) is a population average. Your individual rate can differ by a factor of two or more.

• The declared ethanol content of beverages is often approximate. A "standard drink" poured at home can easily contain 1.5× the nominal dose.

• Sex, age, body composition, and medication use materially shift the curve.

The result is a ROUGH ESTIMATE. Do not treat it as a measurement. For anything important — fitness to drive, evidential proceedings, workplace compliance — use an officially calibrated device or defer to the official test result.

Use of this site does not create a physician-patient relationship, attorney-client relationship, or any other professional relationship between you and the operator. The operator is a natural person, not a licensed healthcare professional, and not a licensed legal practitioner.

Where we rely on external sources — legal gazettes, peer-reviewed pharmacokinetic studies, public-health data — we link to them. Readers are encouraged to verify any specific claim against the primary source directly before acting on it. The Methodology page keeps the consolidated citation list.

Alcohol impairs judgement before it produces visible symptoms. The law in most jurisdictions is intentionally conservative for exactly this reason. If you have consumed any alcohol and there is any doubt whatsoever about your whether alcohol may still affect you, do not drive.