Alcohol Metabolism & Elimination: How Long Does It Take to Clear Your System?

Alcohol elimination varies by individual. For a 185 lb person, the average rate is 0.015–0.02% BAC per hour. Factors influencing rate: age, sex, body composition, liver health, genetics, food intake, medications, and hydration.

Estimated Elimination Times (Approximate)

Drinks	Estimated Peak BAC	Elimination Time
1 (12 oz beer, 5 oz wine, 1.5 oz spirits)	0.02–0.03%	1.5–2 hours
2	0.04–0.06%	3–4 hours
3	0.06–0.09%	4.5–6 hours
4	0.08–0.12%	6–8 hours
5	0.10–0.15%	7.5–10 hours

Critical Notes:

• These are rough estimates—individual variation is significant.
• Impairment begins well below 0.08% BAC (legal limit in most US states).
• Dehydration, poor nutrition, certain medications, and liver disease slow elimination.
• Never rely on estimates for driving or safety decisions. Allow extra time; use alternative transportation.

The only way to know your BAC is a breathalyzer or blood test. When in doubt, wait longer.