What This Calculator Does

This page places body weight, a sex input used by the page model, serving count, serving volume, alcohol by volume (ABV), and elapsed time into a simplified Widmark-style model. It returns:

• an estimated BAC percentage;
• pure-alcohol grams derived from volume, ABV, and the page’s ethanol-density factor;
• a modeled time-to-0 reference based on a fixed clearance assumption;
• a broad page-model warning band.

It is useful for understanding how serving size, ABV, body weight, and time change a model output, and for alcohol-safety education. It does not measure alcohol in blood, replace a breath or blood test, give permission to drive, provide legal conclusions, diagnose intoxication, or certify workplace safety.

When to Use It

• You want to compare how ABV changes a modeled result for the same volume.
• You want to convert serving count, volume, and ABV into pure-alcohol grams.
• You want to see how elapsed time changes the output under one fixed model.
• You are preparing health education, training, or a checkable worked example.

If you have been drinking, do not calculate first and then decide whether to drive. Arrange a sober driver, taxi, public transit, or another safe way home.

Inputs Explained

Weight

The page uses kilograms. The input control indicates a 30–250 kg range; weight enters the alcohol-distribution term, so the same alcohol dose produces different model values at different weights. It is not a measurement of body water or body fat.