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Blood Alcohol Level - Are You Legally Intoxicated?

One Drink is Considered:

  • 1 Beer
  • 1 Three Ounce Glass of Wine
  • 1 Shot or 1 Ounce of Hard Liquor

Drink and Weight Table

Weight Number of Drinks
1 2 3 4 5 6 7 8 9
100 0.032 0.065 0.097 .0129 .0162 0.194 0.226 0.258 0.291
120 0.027 0.054 0.081 0.108 0.135 0.161 0.188 0.215 0.242
140 0.023 0.046 0.069 0.092 0.115 0.138 0.161 0.184 0.207
160 0.020 0.040 0.060 0.080 0.101 0.121 0.141 0.161 0.181
180 0.018 0.036 0.054 0.072 0.090 0.108 0.126 0.144 0.162
200 0.016 0.032 0.048 0.064 0.080 0.097 0.113 0.129 0.145
220 0.015 0.029 0.044 0.058 0.073 0.088 0.102 0.117 0.131
240 0.014 0.027 0.040 0.053 0.067 0.081 0.095 0.108 0.121

People often ask, "How many drinks does it take to become legally drunk?"

That’s the wrong question to ask because it presupposes that there are a fixed number of drinks that are acceptable before you get behind the wheel. That’s not the case. For example, if you are taking medication, one drink could put you into the "DUI" category. For some people, it often takes very little alcohol to become legally drunk and certain physical characteristics such as weight, gender and body fat percentage can all be factors in the equation. Eating can also affect your outcome – you are more likely to fail a blood alcohol test if you do not eat. So, practically, if you’re wondering how many drinks you can have before driving, the best answer is ‘None.’ Legally, in all states you should not be operating a motor vehicle with a .08 percent blood alcohol concentration (BAC). In other words, whether or not you consider yourself "drunk," the law considers you to be an offender if your BAC is above .08%. This table is provided as a reference and it should not be relied upon to determine whether you are capable of operating a motor vehicle. Always keep in mind that there are a number of variables that can influence whether you are legally qualified to drive.