About TestYourAlcohol
A free, science-based tool for smarter alcohol decisions.
What We Do
TestYourAlcohol is a free online blood alcohol content (BAC) calculator and alcohol education platform. Our primary tool uses the clinically established Widmark formula to estimate your BAC based on your weight, gender, drinks consumed, and time elapsed — giving you an instant, data-driven read on how alcohol is affecting your body right now.
We also publish in-depth, research-backed guides on alcohol metabolism, DUI laws, breathalyzer science, and safe drinking practices — all written to be accurate, clear, and genuinely useful.
Our mission is simple: give people accurate, accessible information so they can make safer choices about alcohol. Whether you're wondering if you're safe to drive, curious about how the Widmark formula works, or researching the science of hangovers — we're here to help.
The Science Behind It
The BAC calculator uses the Widmark formula, the same mathematical model used in clinical and legal settings worldwide. The formula accounts for body weight, biological sex (which affects total body water percentage), the volume and alcohol content of drinks consumed, and the time elapsed since drinking began. We also factor in stomach content, which significantly affects alcohol absorption rates.
All results are estimates. Individual metabolism, health conditions, medications, and other factors mean actual BAC can vary. Our tool is for informational purposes only — never rely on any calculator as clearance to drive.
Who Built This
TestYourAlcohol is part of the AIOM AUTOMATION SOLUTIONS, a group of informational web tools focused on health, safety, and practical decision-making. Our content is reviewed for accuracy and updated regularly.
Contact & Partnerships
For advertising, affiliate partnerships, content corrections, or general inquiries, please reach us through the AIOM AUTOMATION SOLUTIONS.
Disclaimer
All content on TestYourAlcohol is for educational and informational purposes only. Nothing on this site constitutes legal, medical, or professional advice. BAC calculations are estimates only. Never drink and drive. Always prioritize safety and use a designated driver or rideshare service if you have been drinking.