Using a blood alcohol chart - calculator.

Estimating your blood-alcohol content.

The charts below (blood alcohol calculator) provide a theoretical blood-alcohol content, based on your gender, body weight, the number of drinks you had and the time elapsed from your first drink. Your blood alcohol level will rise with each drink you take, and will lower over time as your body processes and eliminates alcohol. An impaired driving lawyer refers to this process as your rates of absorption and elimination of alcohol.

To use the chart, follow these steps:

1. On the appropriate chart below, find the number opposite your body weight and under the number of drinks you had.
2. Subtract the amount of alcohol "burned up" (eliminated by your metabolism) since your first drink. For a quick calculation use the figure of .015 percent per hour. Your actual rate of alcohol elimination could be different from this.

Example:

A 180-lb. man consumes six drinks in four hours.

.125 - (.015 x 4) = .065

IMPORTANT!

These calculations should only be used as a general guideline for estimating blood or breath alcohol levels. The predicted alcohol levels may not be valid for a given set of circumstances. Only a toxicologist should perform a calculation of blood alcohol concentration. Ask your lawyer to retain a toxicologist to provide an opinion of blood alcohol concentration based on what you actually had to drink, and what your actual elimination rate is. Do not under any circumstances use a blood alcohol calculator as a guide to whether or not it is safe to drink and drive. Impairment of ability to operate a motor vehicle can occur at low concentrations of alcohol and/or drugs.

Chart For Men

Chart for Women

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