Widmark BAC estimate — informational only.
Widmark formula estimates blood-alcohol content from body weight, biological sex, drinks consumed, and hours since first drink.
Rough estimate only. Actual BAC depends on food, medications, individual metabolism, and drink strength.
Because so many personal factors affect real BAC, this estimate should never be used to decide whether it's safe to drive — the only reliable way to know your actual BAC is a breathalyzer or blood test, and the only guaranteed-safe choice after drinking is not driving at all.
175 lb male, 3 standard drinks, 2 hours since first drink: estimated BAC 0.100% — above the US 0.08% legal limit.
US: 14 g pure alcohol = 12 oz beer @ 5%, 5 oz wine @ 12%, or 1.5 oz spirits @ 40%.
No — it's an estimate. Individual metabolism, medications, food, and drink strength all shift the real number. Never rely on BAC estimates to decide to drive.
Alcohol clears at ~0.015%/hr on average. A 0.10% BAC needs ~6–7 hours to fully clear.