Free Online Blood Alcohol Content Calculator

Use this calculator to determine your blood alcohol content, or BAC in short, and to determine if it is within the legal limits in various countries. Traffic police use a breathalyzer to determine the BAC and see if a person is legally drunk. This calculator is useful in case you don't have a breathalyzer.

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Free Online Blood Alcohol Content Calculator

Total Fluid Consumed:

12 oz. or 330 ml for a beer can, 4 oz. or 118ml for a wine glass, and 1.5 oz or 44 ml for one shot.

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Drink's Alcohol:

Beer is usually 4% to 5% alcohol, 15-20% for wine and 30-50% for hard liquor.

Hours Consuming Drink:

Blood alcohol content dissipates with time.

Body Weight:

Heavier person absorbs alcohol in blood faster.

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Results

Click 'Calculate' to see the results.

Progressive Effects of Alcohol

BAC (%)	Behavior	Impairment
0.01–0.029%	Average individual appears normal	Subtle effects that can be detected with special tests
0.03–0.059%	Mild euphoria Sense of well-being Relaxation Talkativeness Joyousli Decreased inhibition	Alertness Judgment Coordination Concentration
0.06–0.10%	Blunted Feelings Disinhibition Extroversion Impaired Sexual Pleasure	Reflexes Reasoning Depth Perception Distance Acuity Peripheral Vision Glare Recovery
0.11–0.20%	Over-Expression Emotional Swings Angry or Sad Boisterous	Reaction Time Gross Motor Control Staggering Slurred Speech
0.21–0.29%	Stupor Loss of Understanding Impaired Sensations	Severe Motor Impairment Loss of Consciousness Memory Blackout
0.30–0.39%	Severe Depression Unconsciousness Death Possible	Bladder Function Breathing Heart Rate
>0.40%	Unconsciousness Death	Breathing Heart Rate