BAC Elimination Calculator
Estimate how long it may take for blood alcohol concentration to decline from a current level to a target BAC using a chosen elimination rate.
Estimated time to target
5.3 hours
How to Use
- Enter the current BAC estimate.
- Set the target BAC you want to reach.
- Use the default elimination rate or enter another assumed rate.
- Review the estimated number of hours to reach the target.
Frequently Asked Questions
What elimination rate does this use?
The default uses a common estimate of 0.015 BAC per hour, but real rates vary from person to person.
Is this exact enough for safety decisions?
No. BAC elimination varies and this should not be used to decide whether it is safe or legal to drive.
Can water, food, or coffee speed elimination?
No. Time is the main factor that reduces BAC.
Why can people eliminate alcohol at different rates?
Body size, sex, food intake, metabolism, and other factors can all influence elimination speed.