Our free Blood Alcohol Content (BAC) calculator helps you estimate your current BAC level. Input your gender, weight, number of drinks, and time since your first drink to get an instant alcohol level estimation. Promote responsible drinking & informed decisions.
Formula:
BAC ≈ (Alcohol Consumed (g) ÷ (Body Weight (kg) × Gender Factor)) – (Metabolism Rate × Time (hrs))
Where:
- Alcohol Consumed (g): Total grams of pure alcohol ingested.
- Body Weight (kg): Your weight in kilograms.
- Gender Factor: ~0.68 for men, ~0.55 for women (reflects body water content).
- Metabolism Rate: Approximately 0.015% per hour.
- Time (hrs): Hours since your first drink.