BAC Widmark Calculator

BAC Widmark Calculator. Widmark formula BAC estimate. Fast, accurate, private.

Widmark BAC formula

Simplified Widmark estimate — not for legal driving decisions.

Body weight

Number of drinks

Drink volume (ml)

ABV %

Hours since first drink

Estimated BAC

0.029%

Uses ~0.015%/hr elimination. Educational only.

Steps

Calculate blood alcohol content using the Widmark formula — standard forensic BAC estimation.

Widmark BAC formula

Are results official?

No — quick estimates only. Confirm with your bank or provider.

Is data saved?

No. Calculations run in your browser.

Where is the full tool?

Each satellite links back to the main hub calculator.