Enter your weight, gender, number of drinks, and hours since first drink into the calculator to estimate your Blood Alcohol Content (BAC).

BAC Calculation Formula

The following formula estimates your BAC based on weight, gender, number of drinks, and hours since your first drink:

BAC = ((Number of Drinks * 5.14 / Weight * Gender Coefficient) - (0.015 * Hours))

Variables:

  • BAC is the estimated Blood Alcohol Content (%)
  • Weight is your body weight in pounds (lbs)
  • Number of Drinks is the quantity of alcoholic drinks consumed
  • Gender Coefficient varies by gender (0.73 for males, 0.66 for females)
  • Hours is the time in hours since your first drink

To calculate your BAC, input your weight, gender, number of drinks, and hours since your first drink into the calculator above.

What is BAC Calculation?

BAC calculation involves determining the estimated amount of alcohol in a person’s bloodstream based on various factors such as weight, gender, and the number of drinks consumed over a specific period. This calculation is crucial for understanding the effects of alcohol consumption on the body and for making informed decisions about safe alcohol consumption levels.

How to Use the BAC Calculator?

Follow these steps to use the BAC calculator effectively:

  1. Enter your weight in pounds (lbs).
  2. Select your gender (male or female).
  3. Specify the number of alcoholic drinks you’ve consumed.
  4. Input the time in hours since your first drink.
  5. Click on the “Calculate” button to get your estimated BAC.

Example Problem:

Use the following example to test your BAC calculation:

Weight = 160 lbs

Gender = Male

Number of Drinks = 3

Hours Since First Drink = 2

After inserting the variables into the calculator, check the estimated BAC value.

FAQ

1. What factors influence BAC?

BAC is influenced by factors such as weight, gender, the amount of alcohol consumed, and the time over which drinks are consumed.

2. Why is knowing your BAC important?

Knowing your BAC helps you understand the effects of alcohol on your body and aids in making responsible decisions regarding alcohol consumption and driving.

3. How accurate is the BAC calculator?

The BAC calculator provides an estimate based on standard formulas. Actual BAC levels may vary based on individual factors and metabolism.

4. Can BAC vary between individuals?

Yes, BAC can vary based on factors such as weight, gender, metabolism, and tolerance to alcohol.

5. When should I use the BAC calculator?

Use the BAC calculator before making decisions involving alcohol consumption and driving, or when understanding personal alcohol tolerance levels.