Know Your BAC Level
What is the equivalent of one drink?
- 12 oz of beer = 1 drink
- 6 oz of wine = 1 drink
- 1.5 oz of liquor = 1 drink
WHAT IS “BLOOD ALCOHOL LEVEL” AND WHY DO I NEED TO KNOW ABOUT IT?
Blood Alcohol Level (BAL) is the amount of alcohol present in your blood as you drink. It's calculated by determining how many milligrams of alcohol are present in 100 milliliters of blood. But you Don't need a Breathalyzer, a calculator, or a measurement conversion chart to figure out what BAL you had last night. Use the Table of Blood Alcohol Levels below. This is a generalized chart based on a person who is metabolizing (or breaking down) one drink an hour. For example if you are a 120 lb. female drinking seven drinks in one hour, your BAL is a .30%.
Blood Alcohol Levels for Women:
(Weight in lbs)
| # of Drinks in 1 Hour | 100 lbs | 120 lbs | 140 lbs | 160 lbs | 180 lbs | 200 lbs | 220 lbs | 240 lbs |
|---|---|---|---|---|---|---|---|---|
| 1 | .05 | .04 | .04 | .03 | .03 | .03 | .02 | .02 |
| 2 | .10 | .08 | .07 | .06 | .06 | .05 | .05 | .04 |
| 3 | .15 | .13 | .11 | .10 | .08 | .08 | .07 | .06 |
| 4 | .20 | .17 | .15 | .13 | .11 | .10 | .09 | .09 |
| 5 | .25 | .21 | .18 | .16 | .14 | .13 | .12 | .11 |
| 6 | .30 | .26 | .22 | .19 | .17 | .15 | .14 | .13 |
| 7 | .36 | .30 | .26 | .22 | .20 | .18 | .16 | .15 |
| 8 | .41 | .33 | .29 | .26 | .23 | .20 | .19 | .17 |
| 9 | .46 | .38 | .33 | .29 | .26 | .23 | .21 | .19 |
| 10 | .51 | .42 | .36 | .32 | .28 | .25 | .23 | .21 |
| 11 | .56 | .46 | .40 | .35 | .31 | .27 | .25 | .23 |
| 12 | .61 | .50 | .43 | .37 | .33 | .30 | .28 | .25 |
| 13 | .66 | .55 | .47 | .40 | .36 | .32 | .30 | .27 |
| 14 | .71 | .59 | .51 | .43 | .39 | .35 | .32 | .29 |
| 15 | .76 | .63 | .55 | .46 | .42 | .37 | .35 | .32 |
Blood Alcohol Levels for Men:
| # of Drinks in 1 Hour | 100 lbs | 120 lbs | 140 lbs | 160 lbs | 180 lbs | 200 lbs | 220 lbs | 240 lbs |
|---|---|---|---|---|---|---|---|---|
| 1 | .04 | .04 | .03 | .03 | .02 | .02 | .02 | .02 |
| 2 | .9 | .07 | .06 | .05 | .05 | .04 | .04 | .043 |
| 3 | .13 | .11 | .09 | .08 | .07 | .07 | .06 | .05 |
| 4 | .17 | .15 | .13 | .11 | .10 | .9 | .08 | .07 |
| 5 | .22 | .18 | .16 | .14 | .12 | .11 | .10 | .09 |
| 6 | .26 | .22 | .19 | .16 | .15 | .13 | .12 | .11 |
| 7 | .30 | .25 | .22 | .19 | .17 | .15 | .14 | .13 |
| 8 | .35 | .29 | .25 | .22 | .19 | .17 | .16 | .14 |
| 9 | .37 | .32 | .26 | .24 | .20 | .19 | .17 | .15 |
| 10 | .39 | .35 | .28 | .25 | .22 | .20 | .18 | .16 |
| 11 | .48 | .40 | .34 | .30 | .26 | .24 | .22 | .20 |
| 12 | .53 | .43 | .37 | .32 | .29 | .26 | .24 | .21 |
| 13 | .57 | .47 | .40 | .35 | .31 | .29 | .26 | .23 |
| 14 | .62 | .50 | .43 | .37 | .34 | .31 | .28 | .25 |
| 15 | .66 | .54 | .47 | .40 | .36 | .34 | .30 | .27 |
(Weight in lbs)
REMEMBER: While this chart is a good general guideline, every individual reacts differently to alcohol. The chart doesn't take into account your individual body composition, your use of medication, your mood changes, or your personal metabolism rate. Therefore, your blood alcohol level may in fact be slightly higher or slightly lower than the chart indicates for the number of drinks you consume. Just keep in mind that your body processes alcohol at a constant rate of .5 oz. per hour, regardless of how many ounces you consume.
Therefore, the faster you drink, the higher your blood alcohol level will be.
Did you know...
.08 - .10 blood alcohol level is considered legally drunk.
most states practice zero-tolerance laws, meaning if you are under 21 any alcohol in your system is against the law.
Contact Information:
The Office of Health Services offers confidential medical care to all full-time Stonehill students. Its staff includes nurse practitioners, physician assistants and a part-time physician.