Becoming a registered nurse takes two to four years, depending on which degree path you choose. The two main routes are an Associate Degree in Nursing (ADN), which takes about two years, and a Bachelor of Science in Nursing (BSN), which takes four. Both qualify you to sit for the licensing exam and work as an RN.
Associate Degree: 2 Years
The fastest traditional path to becoming an RN is an Associate Degree in Nursing. These programs run about two years of full-time study and focus heavily on clinical skills and core nursing courses. You’ll spend less time on general education compared to a four-year degree, which is why the timeline is shorter.
If you’ve already completed prerequisite courses like anatomy, physiology, microbiology, or English composition at another school, you may be able to transfer those credits in and lighten your course load. Many ADN and BSN programs accept up to 37 hours of prerequisite coursework from accredited institutions, which can make a real difference in how much you need to complete.
Bachelor’s Degree: 4 Years
A traditional BSN program requires four years of full-time study and roughly 120 credit hours. Beyond the clinical training you’d get in an ADN, a BSN covers leadership, public health, critical care, and research concepts. Part-time students typically take five to six years to finish.
The BSN is increasingly becoming the expected standard. New York State now requires RNs who don’t meet certain exemption conditions to earn a bachelor’s degree or higher in nursing within 10 years of becoming licensed. Other states and many hospitals have moved in a similar direction, with large health systems preferring or requiring BSN-prepared nurses for hiring and promotion.
Accelerated Programs for Career Changers
If you already hold a bachelor’s degree in another field, an Accelerated BSN (ABSN) program lets you earn a nursing degree in as little as 15 months. Oregon Health & Science University’s program, for example, covers the same material as a traditional BSN but compresses it into that shorter window. These programs are full-time and intensive, with little room for outside work, but they’re the quickest route to a BSN for someone who already has college behind them.
Bridge Programs: 1 to 2 Years
Licensed Practical Nurses (LPNs) who want to upgrade to RN status can enroll in an LPN-to-RN bridge program. These typically take one to two years because they build on the education and clinical experience you already have. You’ll come out with either an ADN or BSN depending on the specific program, and you’ll be eligible to take the RN licensing exam.
The Licensing Exam Adds Extra Time
Finishing your degree doesn’t make you an RN. You still need to pass the NCLEX-RN, the national licensing exam. After graduation, your nursing school submits your information to your state’s nursing regulatory body, which then has to approve your registration before you receive an Authorization to Test. Processing times vary by state, so there’s often a gap of several weeks between graduation and actually sitting for the exam.
The exam itself is computerized and adaptive, meaning it adjusts to your performance as you go. Most candidates find out their results within a few business days. Once you pass, your state issues your RN license and you can begin working.
Which Path Takes the Least Total Time
Here’s how the options compare at a glance:
- ADN (no prior degree): About 2 years
- Traditional BSN (no prior degree): About 4 years
- Accelerated BSN (prior bachelor’s degree): 15 to 18 months
- LPN-to-RN bridge: 1 to 2 years
The right choice depends on where you’re starting from. If you have no college credits, an ADN is the quickest way to start working as a nurse, though many ADN-prepared RNs go on to complete an RN-to-BSN program later while working. If you already have a non-nursing bachelor’s degree, an accelerated program gets you there fastest. And if you’re currently working as an LPN, a bridge program builds directly on what you already know.