BAC Calculator
Estimate blood alcohol content from drinks consumed.
1 drink = 355ml beer, 150ml wine, 45ml spirits
ℹ️ About this tool
Uses the Widmark formula to estimate BAC. This is an approximation only — actual BAC depends on food intake, metabolism, hydration, medications, and other factors. Never use this to decide if it is safe to drive. When in doubt, do not drive. All calculations happen in your browser.