Blood Alcohol Concentration Calculator

Free blood alcohol concentration calculator for bac calculator. Enter the values below to get an instant result.

JavaScript is required for live calculation.

You can still read how Blood Alcohol Concentration Calculator works, the formula, examples, and FAQs below.

Drinks
Timing
Weight
Sex
Assumptions

Inputs

Drinks

Timing

Weight

Sex

Assumptions

Results update when you click Calculate.

BAC

0.659

((drinks) * 5.14 / ((timing) * (weight || 0.68)) - 0.015 * (sex))

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Recently used

Tools you open will show up here on this device — with your last inputs when available.

What this result means

Free blood alcohol concentration calculator for bac calculator. Enter the values below to get an instant result. Estimate blood alcohol concentration: ((drinks) * 5.14 / ((timing) * (weight || 0.68)) - 0.015 * (sex)).

Assumptions

Rule dependency: Jurisdiction/physiology assumptions.

How it works

Estimate blood alcohol concentration: ((drinks) * 5.14 / ((timing) * (weight || 0.68)) - 0.015 * (sex)).

Example

Example: “bac calculator”. Enter your values and click the button to get a result.

Frequently asked questions

What does this blood alcohol concentration calculator do?+

It helps you estimate blood alcohol concentration. Typical search: “bac calculator”.

How should I read the result?+

Estimate blood alcohol concentration using drinks; timing; weight; sex; assumptions. Result: estimated BAC.