Blood Alcohol Calculator
Estimate blood alcohol content
kg
hours
Formula
BAC = (Alcohol(g) / (Weight(g) × r)) × 100 - Hours × 0.015
Widmark formula. r = 0.68 for males, 0.55 for females. Body metabolizes ~0.015% per hour.
Examples
75kg male, 3 drinks, 2 hours
BAC ≈ 0.039%, mild effects.
Frequently Asked Questions
About Blood Alcohol
Estimate blood alcohol content. Never drive impaired — this is only an estimate.
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