🍺 BAC Calculator

Estimate blood alcohol content.

Weight (lbs)

Sex

Standard Drinks

Hours Drinking

—

Estimate only. Never drive if you have been drinking.

BAC Reference

0.02: Relaxed | 0.05: Impaired | 0.08: Legal limit (US) | 0.10+: Significant impairment

What is a standard drink?

12oz 5% beer = 5oz 12% wine = 1.5oz 40% spirits — all ~14g pure alcohol.