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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‰
Calculate BAC instantly with the exact formula and a worked example. Free online calculator — no signup.
BAC
0‰
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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

  1. Enter the parameter values — every field above is adjustable with a slider.
  2. The result and related metrics are calculated automatically as you type.
  3. Use the additional metrics shown (if any) where needed.
  4. Copy the result or bookmark the page.

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