About BAC Calculator
Blood Alcohol Concentration calculator based on the Widmark clinical formula.. Designed for accurate, instantaneous calculations with zero wait time.
Formula
Widmark BAC% = [Alcohol (g) / (Body Weight (g) × r)] × 100 - (β × Hours)
Example Calculation
A 70kg male consuming 3 standard drinks over 2 hours has an estimated BAC of ~0.042%.
How to Use
- Enter your values into the form fields above.
- The calculation updates immediately in real time.
- Inspect the main summary and secondary breakdowns below.