BAC
Calculate BAC instantly with the exact formula and a worked example. Free online calculator — no signup.
BAC
Standard drinks (10g)
Weight, kg
Sex (m=0.68, f=0.55)
Hours since drinking
BAC
0‰
BAC
0‰
Drive?
Allowed
More about: BAC
What it calculates
The “BAC” calculator computes BAC in ‰ from 4 parameters: standard drinks (10g), weight, kg, sex (m=0.68, f=0.55), hours since drinking.
A handy everyday calculator for daily tasks.
Example calculation
With parameters Standard drinks (10g) = 2, Weight, kg = 70, Sex (m=0.68, f=0.55) = 0.68, Hours since drinking = 1 the result is 0 ‰.
How to use
- Enter the parameter values — every field above is adjustable with a slider.
- The result and related metrics are calculated automatically as you type.
- Use the additional metrics shown (if any) where needed.
- Copy the result or bookmark the page.