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BAC Calculator

Estimate your blood alcohol content (BAC) based on drinks consumed, body weight, and time elapsed.

Estimated BAC

Blood Alcohol Content0.00%

⚠️ This is an estimate only. Never drive after drinking. Always err on the side of caution.

How to Use the BAC Calculator

  1. Select your gender and enter your weight.
  2. Enter the number of standard drinks consumed.
  3. Enter the hours elapsed since your first drink.
  4. Click Calculate BAC for an estimate.

What is BAC?

Blood Alcohol Content (BAC) is the percentage of alcohol in your bloodstream. This calculator uses the Widmark formula to provide a rough estimate.

This tool is for educational purposes only and should never be used to determine if it's safe to drive. Actual BAC varies based on many factors. Always use a certified breathalyzer or avoid driving after drinking entirely.

Frequently Asked Questions

Is this accurate enough to decide if I can drive?

No. This is only a rough estimate. Never use this tool to decide whether it is safe to drive - always choose a designated driver or alternate transportation after drinking.

🔗 Also try the Bac Calculator on TipCalc.in