Becoming a Nutritionist
How to Become a Nutritionist: Degrees and Credentials
By Taylor Rupe, Founder & Editor · Updated October 9, 2026
To become a nutritionist, you choose between three routes: a nutrition degree and the unprotected title, the Certified Nutrition Specialist (CNS) credential, or the Registered Dietitian Nutritionist (RDN) credential. Your state’s rule for the title and the kind of work you want decide which one fits.
Most people who search this question are not told that the word is unprotected in most states. That is good news for access and a reason to be careful, because the credential behind the word is what employers and clients actually check.
Three routes
What Are the Ways to Become a Nutritionist?
Widest door
A Nutrition Degree and the Word Itself
In most states nobody licenses the word nutritionist, so a bachelor’s degree in nutrition science is the common starting point for wellness, community, food industry and education roles. It opens work. It does not open clinical care.
Graduate credential
The Certified Nutrition Specialist
The CNS comes from the Board for Certification of Nutrition Specialists. It asks for a qualifying graduate degree, supervised practice, and a pass on the board’s exam. It is the most direct way to carry a credential behind the word.
Clinical route
The Registered Dietitian Nutritionist
The RDN is the credential hospitals and clinics ask for by name. It runs through an ACEND-accredited program, a graduate degree and the registration exam. Every RDN may call themselves a nutritionist, which is why many people take this road.
| Compared on | Degree and the Title | CNS | RDN |
|---|---|---|---|
| Who issues it | No single body in most states | Board for Certification of Nutrition Specialists | Commission on Dietetic Registration |
| Degree | Usually a bachelor’s in nutrition or a related field, if the employer asks | Qualifying master’s or doctorate with specified coursework | Graduate degree plus ACEND-accredited coursework |
| Supervised practice | None required by the word | 1,000 hours on the nutritionist route | Through an ACEND-accredited pathway |
| Exam | None | BCNS certification exam | CDR registration exam for dietitians |
| Best fit | Wellness, education, community, industry | Advanced nutrition practice built on a graduate science degree | Hospitals, clinics, long-term care, public health |
The full requirements live on the credential pages: CNS certification requirements and RDN certification requirements. For the legal difference between the titles, read dietitian versus nutritionist.
Step by step
What Steps Do You Take to Become a Nutritionist?
Decide Which Kind of Work You Want
Coaching, community programs, food companies and writing do not need the same paperwork as treating patients with a medical condition. Decide this first, because it picks the credential for you and saves a degree you did not need.
Check Your State’s Rule for the Title
Some states license dietitians and nutritionists, some protect only the dietitian title, and some regulate very little. Ask the state board that covers dietetics and nutrition before you enroll, and again if you plan to move.
Earn the Degree That Fits the Route
A bachelor’s degree in nutrition science fits the first route. The CNS and the RDN both expect a graduate degree. If your bachelor’s is in another field, a master’s built for career changers is the usual way in.
Complete Supervised Practice If Your Route Needs It
The CNS and the RDN each require supervised practice with an approved supervisor. The first route does not. Ask every program who finds the placement, because that answer changes what the degree really costs you.
Pass the Exam and Keep the Credential Current
Both credentials end in an exam and then recertification with continuing education. Confirm the current rules with the issuing body, since they revise their requirements and fees on their own schedule.
Degrees
Which Degree Do You Need to Be a Nutritionist?
A bachelor’s degree in nutrition science is the common first step. It teaches food science, biochemistry, physiology and the research behind dietary advice, and it keeps every route open. Compare the 11 online programs in the nutrition science ranking on cost and completion.
If you already hold a bachelor’s in another field, a graduate program is the faster way to change direction. The master’s for non-nutrition majors list is built for that reader, and the full master’s ranking covers all 45 online master’s programs we index. Plan on the RDN route? Use the dietetics ranking, and check each program in ACEND’s directory before you pay a deposit.
Pay
How Much Do Nutritionists Earn?
Federal wage reporting counts dietitians and nutritionists together as SOC 29-1031. The national median is $76,400 across 77,570 jobs in the May 2025 release, and the middle half earns between $63,080 and $89,340.
Dietitian pay by state shows where the median moves most. Read it as a midpoint for the occupation, since a nutrition degree on its own and a clinical credential lead to different jobs.
Questions About Becoming a Nutritionist
How Many Years Does It Take to Become a Nutritionist?
It depends on the route. A bachelor’s degree in nutrition science usually takes four years of full-time study and can be enough for wellness, community and industry roles. The CNS and the RDN both require a graduate degree and supervised practice on top of that, so those routes run several years longer.
Can You Become a Nutritionist Online?
Much of the coursework can be completed online, including bachelor’s and master’s degrees in nutrition. Supervised practice is different. The CNS board permits in-person, remote or combined supervision, while dietetics rotations happen in person at approved sites. Check the exact program before you enroll.
Do You Need a Degree to Call Yourself a Nutritionist?
In most states the word is not protected, so the law does not set a degree requirement for using it. Employers, clients and insurers still look for training, and some states do regulate the title. Ask your state board what applies where you plan to work.
Is It Hard to Become a Nutritionist?
The first route is the most open, and the CNS and RDN routes are demanding because they combine a graduate degree, supervised practice and an exam. Most of the difficulty is planning: choosing the credential before the degree, and finding supervised practice if the route needs it.
What Is the Difference Between a Nutritionist and a Registered Dietitian?
Registered dietitian nutritionist is a credential from the Commission on Dietetic Registration. Nutritionist is a general word that most states leave unprotected. Our guide to dietitian versus nutritionist sets out what each means for education, scope of practice and titles.
How Much Do Nutritionists Make?
The Bureau of Labor Statistics counts dietitians and nutritionists as one occupation, SOC 29-1031. Its May 2025 release reports a national median of $76,400. The figure is a midpoint across the whole occupation, not an offer for any one route.
Sources
- IPEDS, U.S. Department of Education Program counts, award levels, published tuition, graduation and admission rates, and degrees conferred.
- BLS Occupational Employment and Wage Statistics Median and percentile wages and employment counts for dietitians and nutritionists, SOC 29-1031.
- Accreditation Council for Education in Nutrition and Dietetics The body that accredits the education pathways leading to the dietetics credentialing exams.
- Commission on Dietetic Registration Issues the RDN and NDTR credentials and sets the eligibility requirements and exams.
- Board for Certification of Nutrition Specialists Issues the Certified Nutrition Specialist credential, which is separate from the RDN.