How long it takes to become a nurse depends on which type of nurse you want to be. The fastest entry point, a Certified Nursing Assistant, takes as little as four to six weeks. A Licensed Practical Nurse requires about 12 months. A Registered Nurse takes two to four years, and advanced practice roles like Nurse Practitioner or Nurse Anesthetist can add another three or more years on top of that.
Certified Nursing Assistant: 4 to 8 Weeks
If you want to start working in patient care as quickly as possible, a CNA certification is the fastest route. Programs require roughly 105 hours of combined classroom and clinical training, which most schools fit into four to eight weeks. You’ll learn basic skills like taking vital signs, assisting with bathing and mobility, and documenting patient information. After finishing the program, you take a state competency exam to earn your certification.
CNA roles are common in nursing homes, hospitals, and home health settings. The pay is lower than other nursing positions, but many people use CNA experience as a stepping stone. Working as a CNA while completing further education lets you build clinical comfort and confirm that nursing is the right fit before committing to a longer program.
Licensed Practical Nurse: 12 to 18 Months
Licensed Practical Nurses (called Licensed Vocational Nurses in Texas and California) complete a certificate program that typically runs 12 months full time. Evening and weekend formats stretch to about 18 months. These programs are offered at community colleges, vocational schools, and some hospitals. After graduating, you must pass the NCLEX-PN licensing exam.
LPNs perform a wider range of clinical tasks than CNAs, including administering medications, inserting catheters, and monitoring patients under the supervision of a registered nurse or physician. LPN programs don’t usually require prerequisite coursework beyond a high school diploma, which is one reason they’re a popular choice for people who want to enter nursing without spending years on prerequisites first.
Registered Nurse: 2 to 4 Years
Registered Nurses can enter the profession through two main degree paths, and the one you choose determines your timeline.
Associate Degree in Nursing (ADN)
An ADN is a five-semester program (roughly two to two and a half years) requiring about 72 credit hours. These programs are offered primarily at community colleges, making them more affordable than a four-year university. You’ll cover anatomy, pharmacology, and clinical rotations, and you graduate eligible to sit for the NCLEX-RN exam. Many hospitals hire ADN-prepared nurses, though some employers prefer or require a bachelor’s degree.
Bachelor of Science in Nursing (BSN)
A traditional BSN takes four years and about 120 credit hours. The first two years focus heavily on general education and science prerequisites like chemistry, microbiology, anatomy, and physiology. The final two years shift to nursing theory, clinical rotations, and specialty areas like pediatrics and mental health. BSN graduates also take the NCLEX-RN, and they earn the same RN license as ADN graduates, but the additional education opens doors to leadership roles, public health positions, and graduate school.
Accelerated BSN for Career Changers
If you already hold a bachelor’s degree in another field, you don’t need to start over. Accelerated BSN programs condense nursing coursework into 12 to 18 months of intense, full-time study. NYU’s program, for example, runs 15 months across four consecutive semesters. You’ll need to complete science prerequisites (anatomy, microbiology, chemistry, statistics) before starting, which can take one to two semesters depending on how many you can handle at once.
These programs are demanding. Expect packed schedules with little room for outside work. But for someone pivoting from another career, the total time from first prerequisite course to RN license is often around two years, compared to four for a traditional BSN.
Bridge Programs: LPN to RN
If you’re already a Licensed Practical Nurse, bridge programs let you earn an associate degree in nursing with advanced standing. Instead of repeating content you’ve already mastered, you enter partway through the ADN curriculum. At the Community College of Baltimore County, for instance, the LPN-to-RN track consists of about 25 credits of nursing coursework, plus any general education courses not covered in your LPN program. Most students complete a bridge program in two to three semesters, cutting roughly a year off the standard ADN timeline.
How Long Licensing Adds
Graduating from a nursing program doesn’t make you a nurse. You still need to pass the NCLEX exam and receive your state license, and this process adds weeks to your timeline. In California, one of the slower states for processing, the initial application evaluation takes up to 90 days, and license processing runs 10 to 12 weeks. NCLEX results themselves come back within two to three weeks.
Some states issue interim permits within 24 to 48 hours after your exam application is approved, allowing you to start working under supervision while your full license is processed. Other states are faster overall. Plan for anywhere from a few weeks to three months between graduation and the moment you can legally practice, depending on your state.
Nurse Practitioner: 6 to 8 Years Total
Becoming a Nurse Practitioner requires a master’s degree (MSN) or doctoral degree (DNP) in nursing, which you pursue after earning your BSN and gaining clinical experience as an RN. Most MSN programs take two to three years. DNP programs, which are becoming the preferred credential for many NP specialties, typically run about three years. UC Davis’s DNP Family Nurse Practitioner program, for example, is a 36-month commitment.
Add up the pieces and the total timeline looks like this: four years for a BSN, one to two years of RN experience (often recommended or required for graduate admission), and two to three years of graduate school. That puts most Nurse Practitioners at seven to nine years from their first college class to their advanced practice license.
Nurse Anesthetist: 8 to 10 Years Total
Certified Registered Nurse Anesthetists (CRNAs) follow one of the longest training paths in nursing, and it comes with some of the highest salaries in the profession. As of 2025, all new CRNAs must hold a Doctor of Nursing Practice degree. Before you can even apply to a nurse anesthesia program, you need a BSN, an active RN license, and a minimum of 18 months of critical care experience in an ICU setting. Most programs recommend at least two years of ICU work.
The doctoral program itself runs about three years. Adding it all up: four years for a BSN, two or more years of ICU experience, and three years of doctoral training brings the total to roughly nine to ten years from the start of your undergraduate education.
Prerequisites Can Add Time
One factor that often catches people off guard is prerequisite coursework. Nursing programs at every level require science courses that may not be part of your existing education. For ADN and BSN programs, expect to complete anatomy and physiology (usually a two-semester sequence), microbiology, chemistry, nutrition, developmental psychology, and statistics. If you haven’t taken these courses, you’ll need to complete them before you can even apply.
How long this takes varies widely. A student taking a full course load can finish most prerequisites in two to three semesters. Someone balancing prerequisites with a job might need a year and a half to two years. Some schools offer accelerated five-week or eight-week course formats that let you move through prerequisites faster. The key is to research your target nursing program’s requirements early, because prerequisite delays are one of the most common reasons students take longer than expected to start nursing school.