Blood Alcohol Calculator

Estimate your blood alcohol content (BAC) based on drinks, weight, and time. For educational purposes only.

How to Estimate Blood Alcohol Content

  1. 1 Select your gender and enter body weight
  2. 2 Add drinks with their amounts and alcohol percentage
  3. 3 Set the time since your first drink
  4. 4 View your estimated BAC and effects
  5. 5 Check the time until you're sober

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Last updated: January 15, 2026 · v2.1