Cheers · BAC
Use this BAC calculator to estimate your blood alcohol concentration from your drinks and their timing. Explore the estimated alcohol curve without an account. It is not a breathalyzer measurement.
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The calculator converts each serving’s volume and strength into an amount of pure alcohol, then models absorption and elimination minute by minute. Weight, sex, age, height and food are included. It uses the Cheers model with standard hydration and one shared absorption rate for all servings online.
This is a mathematical model, not a breathalyzer measurement. Medicines, health, food and individual metabolism can change the actual result. Even 0.00 does not confirm sobriety. The estimate refers to the moment you press the button; entries and results are neither stored nor sent.
A 12 US fl oz drink at 5% contains 0.6 US fl oz of pure alcohol — about one US standard drink. Multiply the serving volume by the alcohol percentage and divide by 100. This is the alcohol in the drink, not your blood alcohol level.
Age: 30 · Height: 70.87 in · Food while drinking: No. Edit details.
The calculator converts each serving’s volume and strength into an amount of pure alcohol, then models absorption and elimination minute by minute. Weight, sex, age, height and food are included. It uses the Cheers model with standard hydration and one shared absorption rate for all servings online.
This is a mathematical model, not a breathalyzer measurement. Medicines, health, food and individual metabolism can change the actual result. Even 0.00 does not confirm sobriety. The estimate refers to the moment you press the button; entries and results are neither stored nor sent.
A single calculation is a starting point. Cheers lets you log drinks throughout the evening, set a target time, receive warnings and revisit your evenings. The alarm and full history are Premium features.
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