BAC Calculator

Estimate your blood alcohol content

Your Details

Your Drinks

🍺 Beer 330ml
🍻 Pint 568ml
🍷 Wine 175ml
🍷 Large Wine 250ml
🥃 Spirit 25ml
🍸 Cocktail

Drinking Time

0.00 % BAC
0
Standard Drinks
0h
Sober In (approx)
0g
Pure Alcohol
0
Calories (alcohol)
⚠️ Important Safety Warning
I am not a doctor or medical professional. This calculator provides estimates only based on the Widmark formula. Actual BAC depends on many factors including metabolism, medications, liver function, and tolerance. NEVER use this to decide if you are safe to drive. If you have consumed ANY alcohol, do not drive. Call a taxi, use a designated driver, or use public transport.

BAC Over Time

See how your estimated BAC changes hour by hour as your body metabolises alcohol. Calculate your BAC first, then this timeline will populate.

Calculate your BAC first to see the timeline

Legal BAC Limits by Country

Drink-driving limits vary significantly around the world. Some countries have zero tolerance.

Country BAC Limit

BAC Effects Guide

Common Myths

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