Blood Alcohol Content BAC Calculator
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Online Breathalyzer And Blood Alcohol Content Calculator. Had a few drinks? Feeling a bit drunk? Not sure if you should drive and risk a drink driving charge? Try the R U Pissed online breathalyzer and blood alcohol content calculator.

BAC Calculator

The Effects Of Alcohol

Alcohol And The Body

Standard Drinks

Standard Drink Calculator

How Breathalysers Work

Drink Driving Penalties

Drink Driving BAC Limits

Hangover Intensity Scale

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5 Stages Of Drunkeness

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BAC Methodology


BAC Calculator Methodology And Assumptions

  • Alcohol Metabolism Rate:
    • 7.9 grams (10 ml) per hour (male and female)
    • Rate assumed constant over time
  • Specific Gravity Of Alcohol: 0.79 grams/milliltre
  • Water Content Of Blood: 81.57%
  • Body Water Volume Adjustment Factors:
    • Height: ~ +0.11/cm
    • Weight: ~ +0.34/kg (male) and ~ +0.25/kg (female)
    • Age: ~ -0.10/yr
  • No adjustments made for liver function or variations in gastric absorption levels
  • No adjustments made for body temperature or ambient temperature
  • Alcohol contents shown are % by volume (vol/vol)

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BAC Calculator : Effects : The Body : Standard Drinks : Standard Drink Calculator : Breathalysers : Drink Driving BAC : Hangover Intensity : Hangover Cures : Jokes : Contact

This web site does not endorse drink driving or the excessive consumption of alcohol. Blood alcohol calculations are to be used as a guide only.