George C. Creal Jr., P.C.,
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There are Three Legal Limits of Blood Alcohol Under Georgia DUI Law:

  1. 0.02 is the legal limit for persons under twenty-one years of age.
  2. 0.08 is the legal limit for adults over twenty-one years of age driving non-commercial vehicles.
  3. 0.04 is the legal limit for persons driving commercial vehicles or large trucks or buses.

Georgia DUI Law provides for legal inferences for blood alcohol under 0.08 grams. From 0.05 to just under 0.08 grams, there is no presumption of either impairment or sobriety. Under 0.05 grams, there is a presumption of sobriety.  

The Chart below provides the alcohol calculator taught to Georgia Law Enforcement Officer up until the 2006 revision of the Intoxilyzor 5000 operator training manual which recognizes the gender bias in blood alcohol measurement. This calculator estimates your blood alcohol content based on the number of 5% alcohol beers, one ounce liquor drinks, or 4oz glasses of wine you consume relative to your body weight.  

Blood/Breath-Alcohol Charts

The alcohol calculators below recognize the gender bias in blood/breath alcohol testing. 

MALE BLOOD/BREATH ALCOHOL 
APPROXIMATE BLOOD ALCOHOL PERCENTAGE
Num. BODY WEIGHT (LBS.) LEGAL PRESUMPTION
  100 120 140 160 180 200 220 240  
0 .00 .00 .00 .00 .00 .00 .00 .00 PRESUMPTION OF SOBRIETY
1 .04 .03 .03 .02 .02 .02 .02 .02 NO PRESUMPTION OF IMPAIRMENT OR SOBRIETY.
2 .08 .06 .05 .05 .04 .04 .03 .03
3 .11 .09 .08 .07 .06 .06 .05 .05 PRESUMPTION OF IMPAIRMENT.
** 0.08 IS GEORGIA PER SE LIMIT
4 .15 .12 .11 .09 .08 .08 .07 .06
5 .19 .16 .13 .12 .11 .09 .09 .08
6 .23 .19 .16 .14 .13 .11 .10 .09
7 .26 .22 .19 .16 .15 .13 .12 .11 LEGALLY INTOXICATED EVEN WITH O.02 VARIANCE.
*NOTICABLE IMPAIRMENT AT 0.15
8 .30 .25 .21 .19 .17 .15 .14 .13
9 .34 .28 .24 .21 .19 .17 .15 .14
10 .38 .31 .27 .23 .21 .19 .17 .16

Subtract .01% for each 40 minutes of drinking.
* One drink is equal to 1¼ oz. of 80-proof liquor, 12 oz. of beer, or 4 oz. of table wine.



FEMALE BLOOD/BREATH ALCOHOL 

APPROXIMATE BLOOD ALCOHOL PERCENTAGE
Drinks
Num.
BODY WEIGHT (LBS.) LEGAL PRESUMPTIONS
  90 100 120 140 160 180 200 220 240  
0 .00 .00 .00 .00 .00 .00 .00 .00 .00 PRESUMPTION OF SOBRIETY
1 .05 .05 .04 .03 .03 .03 .02 .02 .02 NO PRESUMPTION OF IMPAIRMENT OR SOBRIETY.
2 .10 .09 .08 .07 .06 .05 .05 .04 .04 PRESUMPTION OF IMPAIRMENT
*0.08 GEORGIA PER SE LIMIT
3 .15 .14 .11 .11 .09 .08 .07 .06 .06
4 .20 .18 .15 .13 .11 .10 .09 .08 .08
5 .25 .23 .19 .16 .14 .13 .11 .10 .09
6 .30 .27 .23 .19 .17 .15 .14 .12 .11 LEGALLY INTOXICATED EVEN WITH 0.02 VARIANCE.

*NOTICABLE IMPAIRMENT AT 0.15

7 .35 .32 .27 .23 .20 .18 .16 .14 .13
8 .40 .36 .30 .26 .23 .20 .18 .17 .15
9 .45 .41 .34 .29 .26 .23 .20 .19 .17
10 .51 .45 .38 .32 .28 .25 .23 .21 .19

Subtract .01% for each 40 minutes of drinking.
* One drink is equal to 1¼ oz. of 80-proof liquor, 12 oz. of beer, or 4 oz. of table wine.




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is a trial lawyer with 18 years of courtroom experience. He is one of only 6 Atlanta DUI lawyers with both an AV Preeminent rating from Martindale.com and a 10.0/10.0 Superb rating on Avvo.com. He has over 100 "not guilty" verdicts under his belt and has forged indispensable relationships with police, judges and prosecutors all over the State of Georgia in order to benefit his clients' defense.
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No legal advice should be obtained from the web site alone. George C. Creal, Jr., P.C. is Georgia Professional Corporation authorized to practice law in the State of Georgia only and all information contained in this web site is intended for use for DUI/DWIs occurring in the State of Georgia. Individuals with DUI/DWIs from outside the State of Georgia should contact a licensed attorney in the state of occurrence of their DUI. Copyright © 2010 George C. Creal, Jr. P.C.
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