Blood Alcohol Content (BAC) Calculator
Estimate your BAC based on your drinks, weight, gender, and time. See how your results compare to legal limits and get tips for responsible drinking.
Calculator
Legal Limits
- 0.08% BAC: Typical legal driving limit in many countries (incl. USA, UK, AU, CA, most of Europe)
- 0.05% BAC: Stricter legal limit in some countries (e.g., Sweden, Norway, Russia, South America regions)
- 0.0% BAC: Zero tolerance for novice/pro drivers and in some countries
About BAC, Metabolism & Responsible Drinking
- BAC rises quickly with more drinks, lower weight, and faster drinking.
- BAC falls slowly (about 0.015% per hour) as the liver metabolizes alcohol.
- Factors affecting BAC: gender, body composition, eating/drinking water before & during, medications.
- Only time reduces BAC. No food, coffee, or cold shower can speed up metabolism.
- Impairment can occur at BAC much lower than legal limits.
- Never drink and drive. Plan alternate transport if unsure.
This calculator is an estimate and not a substitute for a breathalyzer or lab test.
Educational Video: BAC & Alcohol Metabolism
- How alcohol is processed by your body.
- Why impairment lasts longer than you feel alcohol's effects.
Alcohol Calculator : Make Smart Choices, Stay Safe
Whether you’re planning a night out or keeping track of your health, understanding how alcohol affects you is crucial. That’s where our alcohol calculator tools come in. Designed to be simple yet accurate, they help you estimate your alcohol intake, blood alcohol levels, and even convert between types of drinks.
Let’s break down how each type of calculator works — and how it can help you stay informed and safe.
🚗 Planning to Drive? Use an Alcohol Calculator for Driving
One of the most responsible things you can do after drinking is check if you’re safe to drive. Our alcohol calculator for driving takes into account what you’ve had to drink, your body weight, how long you’ve been drinking, and other factors. While it’s not a legal test, it’s a handy estimate of your blood alcohol concentration (BAC).
Many users rely on this alcohol calculator drive feature to help make better choices. But remember — the safest BAC for driving is always 0.00%.
🇦🇺 Need an Alcohol Calculator for Australia?
If you’re based in Australia, it’s important to know that drink-driving laws can vary by state. That’s why we built a dedicated alcohol calculator Australia version. It uses Australian-specific data and BAC limits to give you a more relevant estimate.
For example:
- Fully licensed drivers: legal limit is 0.05%
- Learners and P-platers: limit is 0.00%
This version is perfect for Australians who want a tool tailored to local laws.
🍷 Alcohol Consumption Calculator: Know What You’re Drinking
It’s easy to lose track of how much you’ve had — especially when drinks vary in size and strength. Our alcohol consumption calculator makes it easy to log your drinks and understand your total intake.
Just plug in what you’ve had — whether it’s beer, wine, or spirits — and the calculator shows you:
- How many standard drinks you’ve consumed
- Estimated BAC
- How long it might take to sober up
It’s especially useful for health tracking, weight management, or simply being more mindful of your consumption.
🔬 Alcohol Content Calculator: Measure ABV Like a Pro
If you brew your own beer or are curious about how strong your drinks are, the alcohol content calculator is a great tool. It lets you calculate Alcohol By Volume (ABV) by entering the original and final gravity of your brew.
It’s also great for cocktail lovers who want to know just how strong their favorite drinks really are. Whether you’re experimenting or just curious, this tool gives you accurate insights in seconds.
🔄 Alcohol Conversion and the Alcohol Conversion Calculator
Not all drinks are created equal — and neither are their measurements. The alcohol conversion calculator makes it easy to switch between units and understand alcohol strength across different beverages.
With this alcohol conversion tool, you can:
- Convert drinks into grams of alcohol
- Change ABV into proof (or vice versa)
- Translate standard drinks across countries
Whether you’re traveling, bartending, or comparing labels, this calculator simplifies it all.
⚠️ A Quick Word of Caution
While these tools are helpful, they only provide estimates. Everyone’s body processes alcohol differently. If you’re unsure whether you’re safe to drive, don’t risk it — call a cab or use a breathalyzer. It’s always better to play it safe.
Try Our Alcohol Calculators — Free, Fast & User-Friendly
From estimating your BAC to converting your drink’s strength, our suite of alcohol calculators is designed to help you drink responsibly. Whether you’re using the alcohol calculator drive, checking your intake with the alcohol consumption calculator, or converting with our alcohol conversion calculator, we’ve got you covered.