BAC Calculator

Estimate your BAC level

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About BAC Calculator

A Blood Alcohol Content (BAC) calculator that estimates your current BAC level based on number of drinks, drink type, body weight, biological sex, and time elapsed. See your estimated BAC, impairment level, and time until you reach 0.00%. Based on the Widmark formula used in forensic toxicology. For educational purposes only — never drive if you've been drinking. 100% client-side.

BAC Calculator Features

  • BAC estimation
  • Time to sober
  • Weight-based
  • Sex-adjusted
  • Multiple drink types
  • Impairment levels
  • Legal limit check
  • Hour-by-hour chart
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