DISCLAIMER: The blood alcohol concentration (BAC) calculator is designed as a reference tool ONLY - it is not approved or accepted for use by the Oklahoma Board of Tests for Alcohol and Drug Influence and its results should not be relied upon to determine whether or not a person's blood alcohol concentration is above the legal limit or to determine if a person is actually impaired. Other factors must also be considered, such as the type and quantity of alcohol consumed, the effects of medication, or health and physiological conditions. Refusal to submit to a test for the purpose of determining blood alcohol concentration will result in a revocation of driving privileges.