Approximate Blood Alcohol Percentage

Alcohol affects individuals differently. Your blood alcohol level may be affected by your age, gender, physical condition, amount of food consumed and any drugs or medication. In addition, different drinks may contain different amounts of alcohol, so it's important to know how much and the concentration of alcohol you consume.

For purposes of this guide, "one drink" is equal to 1.25 oz. of 80 proof liquor, 12 oz. of regular beer, or 5 oz. of table wine.

A woman drinking an equal amount of alcohol in the same period of time as a man of an equivalent weight may have a higher blood alcohol level than that man. Therefore, women should refer to the female "Know Your Limits" chart.

Some states have set .08% Blood Alcohol Concentration (BAC) as the legal limit for Driving Under the Influence. For commercial drivers, a BAC of .04% can result in a DUI conviction nationwide.

IMPAIRMENT BEGINS WITH YOUR FIRST DRINK.

FOR SAFETY'S SAKE, NEVER DRIVE AFTER DRINKING!

Men

 

Approximate Blood Alcohol Percentage

Drinks

Body Weight in Pounds

 

 

100

120

140

160

180

200

220

240

 

0

.00

.00

.00

.00

.00

.00

.00

.00

Only Safe
Driving Limit

1

.04

.03

.03

.02

.02

.02

.02

.02

Impairment
Begins

2

.08

.06

.05

.05

.04

.04

.03

.03

Driving
Skills
Significantly
Affected


Possible
Criminal
Penalties

3

.11

.09

.08

.07

.06

.06

.05

.05

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


Criminal
Penalties

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 1.25 oz. of 80 proof liquor, 12 oz. of beer, or 5 oz. of table wine.

Never Drink and Drive!

Women

 

Approximate Blood Alcohol Percentage

Drinks

Body Weight in Pounds

 

 

90

100

120

140

160

180

200

220

240

 

0

.00

.00

.00

.00

.00

.00

.00

.00

.00

Only Safe
Driving Limit

1

.05

.05

.04

.03

.03

.03

.02

.02

.02

Impairment
Begins

2

.10

.09

.08

.07

.06

.05

.05

.04

.04

Driving Skills
Significantly
Affected


Possible
Criminal
Penalties

3

.15

.14

.11

.10

.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


Criminal
Penalties

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 1.25 oz. of 80 proof liquor, 12 oz. of beer, or 5 oz. of table wine.

Never Drink and Drive!