How accurate is this BAC calculator?
Our BAC calculator uses the Widmark formula, which is the standard method used by law enforcement and medical professionals. However, individual factors like metabolism, food consumption, and medications can affect your actual BAC, so this should be used as an estimate only.
What is the legal BAC limit for driving?
In most US states, the legal BAC limit is 0.08%. However, some states have lower limits for commercial drivers (0.04%) or zero tolerance for drivers under 21. Always check your local laws and never drive if you feel impaired.
How long does it take for alcohol to leave your system?
Alcohol is eliminated from your body at an average rate of 0.015% BAC per hour. This means it takes about 1 hour to process one standard drink. However, this rate can vary based on factors like age, weight, sex, and overall health.
Can I speed up alcohol elimination?
No, there's no way to speed up alcohol elimination. Coffee, cold showers, or exercise won't reduce your BAC. Only time can lower your blood alcohol content. The liver processes alcohol at a fixed rate that cannot be accelerated.
What factors affect BAC calculation?
Key factors include body weight, sex (men typically have more water content), age, metabolism rate, food consumption, medications, and the rate of alcohol consumption. Our calculator accounts for weight, sex, and time, but other factors may cause variations.
Is it safe to drive with a BAC below 0.08%?
Even with a BAC below the legal limit, you may still be impaired. Alcohol affects judgment, reaction time, and coordination at any level. If you've been drinking, the safest choice is to use a designated driver, rideshare, or public transportation.
