How To Calculate Your Estimated Blood Alcohol Content
(BAC)
Showing estimated percent of
alcohol in the blood by number of drinks in relation to
body weight. This percent can be estimated by:
1. Count your drinks (1 drink
equals 1 ounce of 100-proof liquor, one five ounce
glass of table wine or one 12-ounce bottle of regular
beer).
2. Use the chart below and
under number of "drinks" and opposite "body weight" find
the percent of blood alcohol listed.
3. Subtract from this number
the percent of alcohol "burned up" during the time elapsed
since your first drink. This figure is .015% per hour.
(Example: 180 lb.
man - 8 drinks in 4 hours / .167% minus (.015x4) = .107
%
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