Health

BAC Calculator

Blood Alcohol Content. Fast, accurate, and completely free.

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1 drink = 350ml beer (5%), 150ml wine (12%), or 45ml whiskey (40%)

Results
Estimated Blood Alcohol Content (BAC)
0.052%
Moderate Impairment

Impairment Profile

Time to Sober Up 3.5 Hours
Driving Safety Illegal in most places (≥0.05)

Mathematical Formula

\text{BAC} = \left( \frac{A \times 5.14}{W \times r} \right) - 0.015 \times H

A = Alcohol consumed in ounces.

W = Body weight in pounds.

r = Gender water constant (0.73 for men, 0.66 for women).

H = Hours since drinking began.

0.015 = Average rate of alcohol elimination per hour.

How to Use this Calculator

  1. Select your biological gender and enter your body weight in kilograms.

  2. Input the number of standard drinks you consumed.

  3. Enter the hours that have passed since you had your first drink.

  4. Review your estimated BAC percentage, impairment status, and safety warning.

What is Blood Alcohol Content (BAC)?

Blood Alcohol Content (BAC) is the concentration of alcohol in your bloodstream, expressed as a percentage. It represents the mass of alcohol per volume of blood. This calculator uses the Widmark Formula, the most widely accepted scientific model for estimating BAC.

Frequently Asked Questions (FAQ)

What is the legal limit for driving in India?

In India, the legal limit for driving is 0.03% (30mg of alcohol per 100ml of blood).

How can I sober up faster?

Only time can sober you up. Coffee, cold showers, or drinking water do not speed up the liver's metabolism of alcohol.

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