With the BAC Calculator, you can calculate your per-mille value, i.e., the blood alcohol concentration (BAC) after the consumption of alcoholic beverages, based on weight, body height and gender, as well as the consumed beverages.
Supplementary Information on the Blood Alcohol Calculator
- Calculation Logic
- Widmark Formula
- Input Aids for the Blood Alcohol Calculator
- Sample Calculation
Weight in lbs
Please state your weight in lbs. Blood alcohol content is a measure of the amount of alcohol in the blood. It is calculated as the ratio of the weight of alcohol to body weight, i.e., measured in the metric units g/kg (One gram is approximately equal to 0.56 drams, and one kilogram is 2.2 pounds.) Thus, one gram of alcohol per kilogram of body weight is equivalent to 1.0 g/kg or 1.0 per mille (1‰) of an alcohol content in the blood.
Height in feet and inches
Please state your height in feet and inches. The body weight in relation to the body height forms the basis for calculating the individual body fat percentage. Since alcohol is distributed primarily in the body water after ingestion, with little accumulation in the adipose tissue, body size is an important factor in calculating the blood alcohol content.
Weight in kg
Please enter your weight in kg. The blood alcohol content is a measure of the amount of alcohol in the blood. It is measured as the ratio of the weight of alcohol to the body weight, i.e., in g/kg. Thus, one gram of alcohol per kilogram of body weight corresponds to an alcohol content in the blood of 1.0 g/kg or 1.0 per mille (1‰).
Height in cm
Please enter your height in cm. The body weight in relation to the body height forms the basis for calculating the individual body fat percentage. Since alcohol is distributed primarily in the body water after ingestion and only a small amount accumulates in fatty tissue, the body height is an important factor in calculating the blood alcohol content.
Please indicate your gender. Women usually have a slightly higher individual body fat percentage than men. Since alcohol is distributed mainly in the body water after ingestion and only a small amount accumulates in the fatty tissue, gender is also an important factor in calculating the blood alcohol content, in addition to body height.
Duration of consumption
Please indicate how much time has elapsed since the first alcohol was consumed. Since the body not only absorbs alcohol during this time but also breaks it down again, this time period must be taken into account when calculating the blood alcohol content.
Here, you can select different drinks, record their alcohol content and record the amount consumed. The BAC Calculator adds up the alcohol content of all drinks and calculates your current alcohol level on the basis of the other individual entries. Please select a drink and enter the alcohol content in percent and the consumed amount . With the help of the "Add beverage" button, you can add more drinks. With the help of the “trash” button, you can delete drinks that have already been specified.
Intended drinks in the BAC Calculator
The following drinks and their effects can be determined using the BAC Calculator: beer, alcopops, wine, sparkling wine, liqueurs, schnapps, and vodka.
Once you have drunk a glass or a bottle of these drinks, you need to convert that amount into the unit of measurement liter (or fluid ounce) and enter it into the calculator. A bottle of beer, for example, is usually equal to 0.33 liters, or 12 fluid ounces .
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