Blood Alcohol Content (BAC) measures the percentage of alcohol in your bloodstream.

What is the legal BAC limit?

In the US and UK, the legal limit is 0.08%. Many countries use 0.05% or lower.

How accurate is this calculator?

This provides estimates using the Widmark formula. Actual BAC varies by metabolism, food intake, and other factors.

Estimate your blood alcohol content based on drinks, weight, gender, and time.

Number of Standard Drinks Body Weight

Gender Hours Since First Drink

Blood Alcohol Content measures the percentage of alcohol in your bloodstream. It's used legally to determine intoxication.

In the US/UK it's 0.08%. Many countries use 0.05% or lower. Always check local laws.

This uses the Widmark formula for estimation. Actual BAC varies by metabolism, food, medications, and individual factors.

What if I get an unexpected result?

Double-check your input values and units. The tool validates inputs and shows error messages.

Does it show the work?

Yes, step-by-step breakdowns are provided so you can follow the calculation logic.

Are results suitable for professional use?

Provides accurate results based on standard formulas. For critical decisions, consult a professional.

How is the result calculated?

Uses standard mathematical formulas widely accepted in the field. The formula is shown with each result.

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