BAC Calculator

Use this calculator to calculate bac using a clear formula and simple inputs.

Calculator

Reset

Result

Answer will appear here

Enter the values above and press Calculate to see the answer, step-by-step solution, and formula used.

How the result is calculated

Widmark BAC estimate from drinks, weight, sex, and time

Explanation

What this calculator does

BAC Calculator helps you calculate the result using clear inputs, a formula, and practical examples.

This calculator is for general information only and is not medical advice or a diagnosis.

How LearnLinx Calculates This Result

Formula

Widmark BAC estimate from drinks, weight, sex, and time

Enter your values and press Calculate to see each computation step with your numbers plugged into this formula.

Example

Enter your values, calculate the result, and review the formula used for the answer.

When to use it

Use it when you need a quick result for study, planning, documentation, or checking a manual calculation.

Common mistakes

  • Assuming the estimate means it is safe to drive.
  • Ignoring drink size or alcohol percent differences.
  • Forgetting elapsed time since drinking started.

Frequently asked questions

Can I use this to decide if I can drive?

No. It is a rough Widmark estimate and never proof of sobriety.

How is BAC computed?

Alcohol grams ÷ (body water mass) × 100, then minus about 0.015 × hours elapsed.

What formula does the BAC Calculator use?

It uses: Widmark BAC estimate from drinks, weight, sex, and time. The result page also shows a step-by-step breakdown of how your answer was calculated.

Is the BAC Calculator free to use?

Yes. All LearnLinx calculators are completely free with no signup required. Signing in is optional and only adds a 60-day history of your calculations.

Is this medical advice?

No. This calculator provides general information only and is not medical advice or a diagnosis. Consult a qualified health professional for personal guidance.