Health Logo. Calculate BAC

Sobriety Calculator

IMPORTANT: If you feel in any way impaired please call a friend, a cab or use a mobile booking service like Lyft or Uber.

Fluid Ounces
Proof
Hours


About Our Calculator

This calculator will help you estimate your blood alchohol level. This tool only attempts to calculate rough estimates and many other factors can impact BAC and the influence of alchohol on a person's ability to drive.

  • A person with low tolerance may be adversely impacted by alchohol at a level significantly lower than the legal limit.
  • Some prescription drugs other circumstances may impact the ability of the liver to process alchohol. Even something as seemingly benign as a tonail fungus treatment may have a dire impact.
  • The above calculator presumes a constant rate of drinking, which rarely happens in relality. Many people start slowly and drink more quickly over time without realizing a change of pace. If you drink over a multi-hour period slowly and binge drink at some point near the end of the drinking period then your BAC will likely be significantly higher than a simplistic estimation tool may suggest.

Drunk Driving Stats

Do not use the above estimation tool or the precise legal limits to justify risky behavior. Please call a cab.

  • In 2014 9,967 people in the United States were killed in alchohol-impaired crashes. - source: CDC
  • Every day 28 people in the United States die from drunk driving. - source: CDC
  • Every 2 minutes a person is injured from drunk driving. - source: NHTSA
  • Drunk driving costs the United States more than $132 billion each year. - source: PIRE

Acronyms

Different states use different terms to describe drunk driving. Here are some of the common acronyms and what they mean.

DUI
Driving Under the Influence
DWI
Driving While Intoxicated
OUI
Operating Under the Influence
OWI
Operating While Intoxicated

State Legal Limits

Refusing to take a breath test may result in a license revocation and/or blood test. In addition to using different names for driving offenses, states also have enhanced penalty levels for higher levels of alchohol and zero tolerance levels for minors below the age of 21 and people on other court ordered restrictions. Visit your state department of transportation and official state government websites for more legal information and to keep up with the latest changes to your driving laws.

State PBAC Level Zero Tolerance Enhanced Penalty
Alabama 0.08 0.02 0.15
Alaska 0.08 0.00 0.15
Arizona 0.08 0.00 0.15
Arkansas 0.08 0.02 0.15
California 0.08 0.01 0.15
Colorado 0.08 0.02 0.17
Connecticut 0.08 0.02 0.16
Delaware 0.08 0.02 0.16
DC 0.08 0.00 0.20
Florida 0.08 0.02 0.20
Georgia 0.08 0.02 0.15
Hawaii 0.08 0.02 N/A
Idaho 0.08 0.02 0.20
Illinois 0.08 0.00 0.16
Indiana 0.08 0.02 0.15
Iowa 0.08 0.02 0.15
Kansas 0.08 0.02 0.15
Kentucky 0.08 0.02 0.18
Louisiana 0.08 0.02 0.15
Maine 0.08 0.00 0.15
Maryland 0.08 0.00 0.15
Massachusetts 0.08 0.02 0.20
Michigan 0.08 0.00 0.17
Minnesota 0.08 0.00 0.20
Mississippi 0.08 0.02 N/A
Missouri 0.08 0.02 0.15
Montana 0.08 0.02 0.16
Nebraska 0.08 0.02 0.18
Nevada 0.08 0.02 0.18
New Hampshire 0.08 0.02 0.16
New Jersey 0.08 0.01 0.15
New Mexico 0.08 0.02 0.16
New York 0.08 0.02 0.18
North Carolina 0.08 0.00 0.16
North Dakota 0.08 0.02 0.18
Ohio 0.08 0.02 0.17
Oklahoma 0.08 0.00 0.15
Oregon 0.08 0.00 0.15
Pennsylvania 0.08 0.00 0.16
Rhode Island 0.08 0.02 0.15
South Carolina 0.08 0.02 0.15
South Dakota 0.08 0.02 0.17
Tennessee 0.08 0.02 0.20
Texas 0.08 0.00 0.15
Utah 0.08 0.00 0.16
Vermont 0.08 0.02 0.16
Virginia 0.08 0.02 0.15
Washington 0.08 0.02 0.15
West Virginia 0.08 0.02 0.15
Wisconsin 0.08 0.00 0.17
Wyoming 0.08 0.02 0.15