Utah Blood Alcohol Limit: 0.05% BAC
Calculate your estimated blood alcohol concentration against official Utah statutory thresholds and zero-tolerance limits.
Alcohol Logged
Add a drink to see your estimate.
Select a quick preset above or tap "+ Add Drink" to estimate blood alcohol concentration, legal limit forecast, and clearance timeline.
Enter drinks above to calculate estimated blood alcohol content.
Impairment persists below the legal limit.
Conservative estimate based on slow elimination metabolism.
Clearance varies by liver enzyme efficiency. Conservative projection accounts for slower metabolic elimination.
View tabular timeline data (Accessible Table Alternative)
| Time | Typical BAC | Low Est. | High Est. |
|---|
At baseline levels, no cognitive or motor impairment is observed.
How the Utah BAC Calculator Operates
Our calculator models your blood alcohol content using established pharmacokinetic distribution principles tailored to Utah statutory rules. By evaluating pure ethanol mass ingested (14 grams per standard drink), gastric absorption, and continuous hepatic elimination (0.015% per hour median), our tool displays when your concentration is projected to fall below the state's 0.05% statutory per se threshold.
The official utah bac limit of 0.05% was enacted by the state legislature, establishing the strictest per se blood alcohol threshold for non-commercial adult motorists in the United States. Commercial operators are regulated by federal standard 49 CFR § 382.201 (0.04% BAC), and underage drivers face zero-tolerance provisions under state statute.
Utah Statutory Impairment Thresholds
Official legal thresholds codified under state statutes and federal transportation regulations:
| Driver Classification | Statutory Threshold | Codified Citation & Official Source |
|---|---|---|
| Standard Non-Commercial Adult (21+) | 0.05% BAC | Utah Code Ann. § 41-6a-502Official State Statute |
| Commercial Driver License (CDL) | 0.04% BAC | Federal FMCSA Regulation (49 CFR § 382.201) |
| Underage Motorist (Under 21) | 0.00% BAC | Utah Code Ann. § 41-6a-530 (Criminal) / § 53-3-231 (Admin) |
Utah Statutory Framework
Utah enforces a per se blood alcohol concentration limit of 0.05% for adult non-commercial drivers under Utah Code Ann. § 41-6a-502, enacted via House Bill 155. Drivers under 21 years of age are prohibited from driving with any measurable alcohol concentration under criminal statute Utah Code Ann. § 41-6a-530 (Class B misdemeanor) and administrative "Not-a-Drop" statute § 53-3-231 (mandatory license suspension). Commercial motor vehicle operators are subject to 0.04% under federal regulations (49 CFR § 382.201).
Official State Resource Repository
To read the codified statute directly from state authorities, access the official state portal below:
Frequently Asked Questions: Utah BAC Limits
What is the legal blood alcohol limit in Utah?
In Utah, the statutory per se threshold is 0.05% BAC under Utah Code Ann. § 41-6a-502. Commercial motor vehicle operators are held to 0.04% BAC nationwide under 49 CFR § 382.201. Motorists under age 21 are subject to a zero-tolerance standard of 0.00% BAC under Utah Code Ann. § 41-6a-530 (Criminal) / § 53-3-231 (Admin).
Can a driver be cited for impaired driving below 0.05% in Utah?
Yes. Under Utah law (Utah Code Ann. § 41-6a-502), operating a motor vehicle while impaired by alcohol to a degree that renders the person incapable of safely driving is prohibited, regardless of whether blood alcohol reaches 0.05%. Never drive after drinking.
Where is the official Utah statutory standard codified?
The official statutory text is codified under Utah Code Ann. § 41-6a-502 and published directly in the official state legislative code repository.
Statutory & Regulatory Citations
Statutory standards referenced from Utah Code § 41-6a-502 (Utah Code Ann. § 41-6a-502), commercial driver rules from 49 CFR § 382.201, and NHTSA Highway Safety Guidelines. Pharmacokinetic clearance models reference Watson, Watson & Batt (1980; 1981), Widmark (1932), and Jones AW (2010).