BAC Estimator
This tool uses the Widmark formula to estimate your Blood Alcohol Content.
1. Enter Your Details:Select your biological sex and units. Enter your body weight.
2. Enter Drinks Consumed:Enter the total number of "standard drinks" you have consumed. A standard drink is approximately 12 oz of beer (5% ABV), 5 oz of wine (12% ABV), or 1.5 oz of distilled spirits (40% ABV).
3. Enter Time Elapsed:Enter the number of hours that have passed since you had your first drink.
This calculator provides a rough estimate for informational and educational purposes ONLY. It is NOT a legal tool and CANNOT be used to determine if you are fit to drive or operate machinery.
Individual BAC levels are affected by many factors, including metabolism, food intake, medication, and health conditions. The result from this calculator may be significantly different from your actual BAC.
IF YOU HAVE BEEN DRINKING, DO NOT DRIVE. Use a designated driver, ride-sharing service, or public transportation.
Estimate your Blood Alcohol Content.
Estimated Blood Alcohol Content
This is only an estimate. Do NOT drink and drive.