SuperCalX

Alcohol Calculator (BAC)

Estimate your Blood Alcohol Content (BAC).
Calculator
Enter your values
Analysis
Interpretation of the current calculator output

Enter values to see detailed analysis and insights.

How to Use

Step-by-step instructions
  1. 1Enter your weight (lbs).
  2. 2Select your gender.
  3. 3Enter the number of standard drinks (12oz beer, 5oz wine, 1.5oz spirits).
  4. 4Enter the time elapsed since first drink.
  5. 5The calculator will estimate your BAC.

Widmark Formula

Estimates BAC based on alcohol mass, body weight, gender-specific distribution ratio (r), and metabolic rate over time.
BAC = (Alcohol / (Weight x r)) x 100 - (0.015 x Hours)

Variables:

r0.68 (Men), 0.55 (Women)
0.015Average elimination rate per hour

Example

2 Drinks in 1 Hour

Inputs:

Weight:160 lbs
Gender:Male
Drinks:2
Time:1 hr

Steps:

  1. 1.Alcohol = 28g
  2. 2.Weight = 72574g
  3. 3.BAC = (28 / (72574 * 0.68)) * 100 - 0.015
  4. 4.BAC = 0.057 - 0.015 = 0.042%
Result:
0.042%

Frequently Asked Questions

Is this legal advice?

NO. This is a rough estimate only. Real BAC depends on food intake, genetics, medications, and individual metabolism. Never drink and drive.