Calculate Your BAC

Personal Information

Beverage Selection


Consumed Beverages

Drinking Period

Enter the start and end time of drinking (leave end time blank for current time). Periods crossing midnight are automatically considered.

The Easiest Blood Alcohol Calculator

THE Blood Alcohol Calculator for a quick and straightforward calculation of your blood alcohol content. Learn here how the Blood Alcohol Calculator determines the value and why our Alcohol Elimination Calculator is the easiest and most reliable.


How Do I Use the Blood Alcohol Calculator?

  1. Select Gender:

    Select your gender from the available options (male or female). This is important because alcohol elimination in the body differs by gender.

  2. Enter Body Weight:

    Enter your body weight in kilograms (kg). Your body weight affects how quickly alcohol is distributed in your body.

  3. Select Beverages:

    Select the type of beverages consumed from the list. Our calculator supports a variety of drinks, including:

    • Beer (0.33 L, 5%)
    • Wine (0.2 L, 12%)
    • Champagne (0.1 L, 11%)
    • Spirits (0.04 L, 40%)
    • Cocktails (0.2 L, variable)
  4. Specify Number of Drinks:

    Enter the number of drinks consumed. You can add multiple drinks of the same type for a more accurate calculation.

  5. Set Drinking Period:

    Select the period during which you consumed the beverages (e.g., in the last 2 hours). The calculator accounts for alcohol elimination over time to estimate your current blood alcohol content.

  6. Start Calculation:

    Click the "Calculate" button to determine your blood alcohol content in BAC. The result is displayed immediately.

Have more questions? Feel free to take a look at our Frequently Asked Questions.
Blood Alcohol Calculator as App

Install Blood Alcohol Calculator as an App

Make accessing your blood alcohol calculator even easier by adding it as an app on your smartphone. This way, you have the calculator readily available at any time!

How to Install the App

How Does the Blood Alcohol Calculator Work?

Our Blood Alcohol Calculator is based on the proven Widmark Formula, which is used to estimate blood alcohol content. The calculation takes into account the following factors:

  1. Amount of Alcohol Consumed in Grams:
    • Calculation: Alcohol in Grams=Beverage Volume (ml)×(Alcohol Content (%)100)×0,8\text{Alcohol in Grams} = \text{Beverage Volume (ml)} \times \left( \frac{\text{Alcohol Content (\%)}}{100} \right) \times 0{,}8
    • Explanation:
      The volume of the consumed beverage is multiplied by the alcohol content and the density of alcohol (0.8 g/cm³).
  2. Distribution Factor (Widmark Factor):
    • Values:
      • Men: 0.7
      • Women: 0.6
    • Explanation:
      The distribution factor accounts for gender-specific differences in body water percentage.
  3. Calculation of Blood Alcohol Content (in BAC):
    • Formula: BAC=Alcohol in GramsBody Weight (kg)×Distribution Factor\text{BAC} = \frac{\text{Alcohol in Grams}}{\text{Body Weight (kg)} \times \text{Distribution Factor}}
    • Explanation:
      This formula provides an estimate of the current blood alcohol content.
  4. Calculation of Blood Alcohol Content (in BAC):
    • Formula: BAC=Alcohol in GramsBody Weight (kg)×Distribution Factor\text{BAC} = \frac{\text{Alcohol in Grams}}{\text{Body Weight (kg)} \times \text{Distribution Factor}}
    • Explanation:
      This formula provides an estimate of the current blood alcohol content.
  5. Consideration of Alcohol Elimination:
    • Elimination Rate:
      On average, the body eliminates 0.1 to 0.15 BAC per hour.
    • Explanation:
      Our Alcohol Elimination Calculator takes into account the time since the first drink in the calculation.

BAC Limits and Their Legal Implications

It is important to be aware of the legal BAC limits to participate responsibly in road traffic and avoid legal consequences. In Germany, the following BAC limits apply:

  1. 0.0 BAC: Applies to novice drivers in the probationary period and drivers under 21 years old. Any alcohol consumption while driving is prohibited. Violations result in a fine of 250 Euros, one point in Flensburg, and an extension of the probationary period.
  2. 0.3 BAC: At this level, impaired driving behavior (e.g., swerving, causing an accident) may indicate relative driving impairment. Criminal consequences such as fines or license suspension may apply.
  3. 0.5 BAC: Absolute BAC limit for all drivers. Exceeding this limit is treated as an administrative offense, regardless of driving behavior. Possible consequences include a fine of 500 Euros, two points in Flensburg, and a one-month driving ban.
  4. 1.1 BAC: At this level, you are considered absolutely unfit to drive. Criminal consequences such as fines, license revocation, and imprisonment may apply.
  5. 1.6 BAC: At this level, an additional medical-psychological examination (MPU) is required before the driving license can be reinstated.

By the way: These limits also apply to cycling. If you are caught cycling with more than 0.5 BAC or causing an accident with 0.3 BAC on a bicycle, you risk losing your driver's license, if you have one. Additionally, fines and points in Flensburg may be imposed. It is important to always participate in road traffic sober and attentive to ensure your own safety and that of other road users.

Find more information about BAC limits here.

Note: These limits may vary by country. It is therefore important to be informed about the applicable regulations in each respective country.

Legal Implications at a Glance:

  • Fines and Points: Even from 0.5 BAC, significant fines and points in Flensburg may apply.
  • Driving Bans and License Revocation: At higher BAC levels or repeated violations, driving bans or complete revocation of the driver's license may apply.
  • Criminal Consequences: Accidents under the influence of alcohol can lead to criminal proceedings, compensation claims, and even imprisonment.
  • Insurance Consequences: In the event of accidents under the influence of alcohol, insurance coverage may be voided, and recovery claims may be imposed.
Driving Under the Influence of Alcohol? Not a Good Idea.

Responsible handling of alcohol is crucial for your own safety and that of other road users. Our Blood Alcohol Calculator helps you estimate your blood alcohol content, but it does not replace official measurements. Never exceed legal BAC limits and avoid driving under the influence of alcohol.


Why Is Our Blood Alcohol Calculator the Easiest?

  • User-Friendliness:
    Our Blood Alcohol Calculator features an intuitive interface that operates without complicated settings.
  • Extensive Beverage Database:
    Choose from the 30 Most Popular Drinks from bars and clubs – from beer and wine to cocktails and shots.
  • Customizable Options:
    Add your own beverages or customize existing ones for a precise calculation.
  • Fast Calculation:
    Receive instant results without waiting times.
  • Mobile Optimized:
    The best Blood Alcohol Calculator is optimized for smartphones and tablets, allowing you to use it anytime and anywhere.

Responsible Partying with Our Alcohol Elimination Calculator

With our Alcohol Elimination Calculator, you can keep track of your BAC and make informed decisions. However, please note that the calculation is only an estimate. Individual factors such as health, diet, and personal metabolism can influence the actual blood alcohol content.


Conclusion

Use blood-alcohol-calculator.com to access the best Blood Alcohol Calculator to intuitively determine your blood alcohol content quickly and easily. Our user-friendly application helps you celebrate responsibly and get home safely.


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