Know your intoxication level instantly. Enter your weight, gender, drinks, and time to estimate your BAC and make safer decisions.
Know when it's safe to drive after drinking. Never guess your intoxication level again.
Uses the Widmark formula with accurate metabolic rates for men and women.
Works perfectly on smartphones, tablets, and desktops. Access it anytime, anywhere.
No data is stored or shared. Your information stays on your device.
Input your weight, gender, number of drinks, and time elapsed.
The tool instantly computes your estimated BAC using the Widmark formula.
See your BAC level, interpretation, and safety recommendations.
Blood Alcohol Concentration (BAC) is a measure of the amount of alcohol in a person's bloodstream, expressed as a percentage. It's a critical metric for determining the level of intoxication and assessing the safety of activities like driving. Our BAC calculator helps you estimate your BAC based on scientific principles so you can make informed decisions.
The calculator uses the Widmark formula, a scientifically validated method to estimate BAC. It considers your body weight, gender, number of standard drinks consumed, and the time elapsed since your first drink. Men and women metabolize alcohol differently due to variations in body water content and enzyme activity, which is why gender is a key input.
A standard drink contains approximately 14 grams of pure alcohol. This equals:
In most U.S. states, the legal BAC limit for driving is 0.08%. However, impairment can begin at much lower levels. Even at 0.02% BAC, you may experience reduced judgment and multitasking ability. Our alcohol consumption calculator helps you stay below legal limits and drive safely.
Always plan ahead. Use a designated driver, ride-sharing service, or public transit if you've been drinking. Drink water between alcoholic beverages and eat food to slow alcohol absorption. Never rely solely on how you feel—use our safe to drive after drinking calculator for an objective assessment.
A BAC calculator estimates your Blood Alcohol Concentration based on weight, gender, drinks consumed, and time. It helps assess intoxication levels for safety decisions.
It uses the Widmark formula, a scientifically accepted method. While highly accurate for most, individual metabolism varies. Always err on the side of caution.
Yes, but conservatively. If the calculator shows any detectable BAC, it's safest not to drive. Impairment begins below the legal limit of 0.08%.
Yes. Eating before or while drinking slows alcohol absorption, leading to a lower peak BAC. Our calculator assumes average conditions.