Check this link for Blood alcohol calculator, to help determine if its safe to drink and drive.
http://www.healthstatus.com/bac.html
HealthStatus.com health calculators and tools do not provide medical advice and do not replace the advice of a medical professional. Care has been taken to make sure the calculators and tools are generating correct results, but no guarantee is made that the results are accurate. The health tools use professionally accepted and peer reviewed algorithms to calculate their results or simple mathematical equations.
