How to use the DUI license suspension checker
Enter a BAC reading and the driver category to see which per se limit applies and where the reading falls against it. Because suspension lengths are set state by state, the suspension figure is an input you control rather than a number this tool invents.
Legal basis — Drunk driving is state law. Every state has a per se limit of 0.08% for drivers aged 21 and over except Utah, which uses 0.05%. Commercial drivers are held to 0.04% under 49 C.F.R. 383.51, and all states apply a zero tolerance rule of roughly 0.00% to 0.02% for drivers under 21, a condition tied to federal highway funding under 23 U.S.C. 161. Implied consent statutes in every state attach an administrative suspension to refusing a chemical test, and many states treat a reading of 0.15% or higher as aggravated. Figures reflect law as of September 2026.
A reading below the per se limit does not close the matter, because impairment-based charges do not depend on a specific number. Equally, being over the limit is a statutory threshold, not a verdict; the license outcome is decided by the state licensing agency and the court handling the case.
This checker is for reference only and is not legal advice. Consult a licensed attorney in the state where the stop occurred, and confirm license status with the state licensing agency.
Frequently Asked Questions
It is the per se limit for drivers 21 and over in almost every state, with Utah at 0.05% as the notable exception. Commercial drivers are held to 0.04% under 49 C.F.R. 383.51, and every state applies a zero tolerance rule of roughly 0.00% to 0.02% for drivers under 21.
Every state has an implied consent law, so refusing a chemical test usually triggers an administrative license suspension on its own, often longer than the suspension for failing the test. Some states also allow the refusal to be used as evidence at trial.