EDUCATIONAL BAC TOOL
BAC Calculator
over time.
See how a Widmark-style BAC estimate changes across the next few hours. This is a model illustration, not a personal measurement or a countdown to driving.
ESTIMATED RANGE
How does an estimate change over time?
HOW TO READ THIS
A model is not
a measurement.
The estimate uses total pure alcohol, weight, sex used in the formula, and elapsed time. It applies the same fixed hourly assumption to every future row, which is why it cannot account for individual absorption, food, medication, health, or metabolism.
Read the BAC formula and limitsLearn about alcohol metabolism