Use this blood alcohol calculator to estimate blood alcohol concentration from drink strength, serving size, body weight, sex, and elapsed time. It also works as a blood alcohol content calculator and blood alcohol level calculator for quick educational estimates.
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Calculation Basis
The estimate reflects drink volume, ABV, elapsed time, body weight, and sex using a simplified Widmark-style formula.
This tool uses a simplified Widmark-style estimate based on alcohol volume, body weight, sex, and elapsed time since each drink. It is intended as an educational guide to help users understand why drink timing, strength, and body size matter.
Real blood alcohol concentration can differ substantially because of food intake, hydration, medication, body composition, and metabolic variation.
The BAC calculator is a practical companion to the clock and city pages. The clock tells you where the next social hour begins; this tool gives users a quick numerical estimate based on common drink inputs.
It is not medical advice and should be treated as a simplified educational calculation rather than a direct measurement.
BAC stands for blood alcohol concentration or blood alcohol content. A BAC calculator estimates how much alcohol may be in the bloodstream based on the drinks entered and the time since drinking.
Drink size, ABV, body weight, sex, timing, food intake, metabolism, medication, and hydration can all affect the estimate. That is why the result should be treated as a guide rather than a direct measurement.
Yes. The calculator supports both imperial and metric inputs, so visitors can switch between pounds and kilograms as well as ounces and milliliters from one central unit selector.