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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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