Free · Health · Clinical Estimates
BAC Calculator
Estimate blood alcohol concentration from standard-drink alcohol mass, body weight, sex coefficient, and elapsed time.
- Checked formula
- Private in your browser
- No signup
Result
Your calculation
- Estimated BAC
- 0.04%
- Estimated peak before elimination
- 0.07%
- Alcohol entered
- 26.9 g
Do not use a calculator to decide whether to drive or perform safety-sensitive work. Actual BAC varies and can remain unsafe even when an estimate appears low.
How to use this calculator
- Enter current measurements as accurately as practical.
- Calculate to see the estimate, range, and method details.
- Use the result as context, and discuss health decisions with a qualified clinician.
Use the result with context
Health results are educational estimates, not a diagnosis or treatment recommendation. A qualified clinician can interpret measurements in the context of your health.