BAC Calculator

Widmark estimate of blood alcohol content — not for legal decisions.

BAC Calculator helps you widmark estimate of blood alcohol content — not for legal decisions. Enter weight, standard drinks, and time since first drink, review the breakdown, and use the guidance below to understand what the number means — and what it does not. What the BAC calculator does BAC Calculator is built for body measurements, calories, and everyday health math. Widmark estimate of blood alcohol content — not for legal decisions. You enter weight, standard drinks, and time since first drink, then Simple Calculators computes the result instantly. These tools use widely published formulas. They are educational screens, not a diagnosis. How the math works Choose your units and Sex, then enter your weight, the number of Standard drinks (14 g of alcohol each) and the Time since first drink in hours. The calculator uses the Widmark formula: BAC = alcohol in grams ÷ (body weight in grams × r) × 100, where r is 0.68 for men and 0.55 for women, then takes off 0.015% for every hour since you started. It assumes all the alcohol is absorbed at once and cleared at a steady rate, which is not true for everyone — never use the result to decide whether to drive. The formula: BAC = alcohol…