BAC Calculator Australia
If you’ve been drinking and don’t have a breathalyser handy, this tool is for you. We get it, you might be a bit tipsy right now. That’s why we’ve made it super simple to check whether you could be over the legal alcohol limit for driving.
Our Blood Alcohol Concentration (BAC) Calculator gives you a quick estimate of how much alcohol is in your system, based on:
- Your weight
- How many drinks you’ve had
- The time you’ve been drinking
This helps you understand how your BAC might relate to Australia’s 0.05 legal driving limit.
Calculate Your Blood Alcohol Level
Enter your details below to get an estimate of your BAC after drinking. This calculator works best for people who want to quickly know:
- Am I safe to drive after drinking?
- How many drinks puts me over 0.05?
- How long does alcohol stay in my system?
Important Disclaimer
This BAC calculator is only an estimate. Everyone processes alcohol differently, depending on things like:
- How much food you’ve eaten
- The type of alcohol you drank
- Your personal metabolism
Because of these factors, this tool can’t guarantee accuracy. Never use this calculator to decide whether it’s safe to drive. The only way to be 100% certain you’re under the legal limit is to avoid alcohol altogether before driving.
Why Use a BAC Calculator?
Many Australians search for answers like:
- “Am I over the limit after 2 drinks?”
- “How many drinks can I have before driving?”
- “Check BAC without breathalyser.”
This tool gives you a rough guide so you can make safer choices and understand how alcohol affects your body, even if you don’t have a breathalyser on hand.