What a Professional Engineer License Is and Why You Need One
A Professional Engineer (PE) license is a credential that allows you to offer engineering services directly to the public and sign off on engineering work. If you work as an engineer in most U.S. states, you do not need a PE license to do your job — you need it only when you want to practice engineering independently, stamp drawings with your seal, or take legal responsibility for a project's engineering. Many engineers work their entire careers without one. But if you want to start your own firm, consult on public projects, or sign engineering documents, a PE license is required by law.
The path to licensure takes years and involves passing two exams, documenting your work experience, and meeting your state's specific rules. Each state sets its own requirements, so the timeline and cost vary. This guide walks you through the general process and what to expect at each stage.
Key Takeaways
- You must complete an ABET-accredited engineering degree, pass the Fundamentals of Engineering (FE) exam, work under a licensed engineer for a set number of years (usually four), and then pass the Professional Engineer (PE) exam.
- The FE exam can be taken right after your degree; the PE exam requires documented work experience, which typically takes four years to accumulate.
- Each state has its own licensing board and slightly different rules about education, experience, and exam timing, so you must check your state's specific requirements before starting.
- The total cost ranges from a few hundred dollars for exam fees to several thousand if you take review courses, and the timeline is typically five to seven years from degree to PE license.
- You register with your state's engineering board, not a federal agency, and you renew your license every one to three years depending on your state.
Step 1: Earn an ABET-Accredited Engineering Degree
Your first requirement is a bachelor's degree in engineering from a program accredited by ABET (Accreditation Board for Engineering and Technology). This is not optional — most states will not let you sit for the FE exam without it. The degree must be in an engineering discipline: civil, mechanical, electrical, chemical, software, structural, or one of several others. A degree in engineering technology or a related field may not may have access to, depending on your state.
If you already have a degree from an ABET-accredited program, you can move forward. If your degree is from a non-accredited program or from outside the United States, you may still be able to proceed, but your state's board will review it separately and may require additional documentation or exams. Check your state's engineering board website to see whether your specific degree meets their standard.
Step 2: Pass the Fundamentals of Engineering (FE) Exam
The FE exam is a computer-based test offered year-round at testing centers nationwide. You can sit for it as soon as you graduate or even before, depending on your state. The exam covers basic engineering principles across all disciplines and takes about five and a half hours. You register through NCEES (National Council of Examiners for Engineering and Surveying), which administers the exam, not through your state board.
The exam costs around $175 to $225, depending on your state. Most people study for four to eight weeks using review books, online courses, or exam prep classes. Once you pass, you become an Engineer in Training (EIT) or Engineer Intern (EI) — the title varies by state. This credential does not let you practice independently, but it documents that you have passed the first hurdle and are on track to licensure.
If you do not pass on your first attempt, you can retake the exam. There is no limit to how many times you can sit for it, though some states require you to wait a certain number of months between attempts.
Step 3: Document Four Years of Work Experience Under a Licensed Engineer
After you pass the FE exam, you must work in engineering under the direct supervision or review of a licensed PE. The exact requirement is usually four years of full-time experience, though some states allow you to count part-time work or graduate study toward this total. The work must be in a field related to your engineering discipline and must involve tasks that a PE would reasonably oversee — design, analysis, project management, or technical review.
You do not need to work for the same employer the entire time, and you do not need to be in the same state. What matters is that you can document the work and show that a licensed engineer supervised or reviewed your output. Keep records of your job titles, dates, projects, and the names of any PEs who supervised you. You will need these details when you explore for the PE exam.
Some states allow you to count graduate study in engineering toward part of this requirement — typically one year of a master's degree counts as one year of experience. Check your state's rules before you enroll in graduate school if you are counting on this credit.
Step 4: Pass the Professional Engineer (PE) Exam
Once you have four years of documented experience, you can sit for the PE exam. Like the FE exam, it is computer-based and offered year-round through NCEES. The exam is discipline-specific — you take the civil PE exam, the mechanical PE exam, the electrical PE exam, and so on. It is longer than the FE exam, running about eight hours, and covers advanced topics in your field.
The exam costs between $300 and $400, depending on your state. Most people study for eight to twelve weeks, and many take a review course or use study materials specific to their discipline. The pass rate varies by discipline and by exam sitting, but typically ranges from 40 to 60 percent, so preparation is serious.
You register for the PE exam through NCEES, but you must also submit your process to your state's engineering board at the same time or shortly before. Your state board will verify your education and experience before you are allowed to sit for the exam. This verification can take several weeks, so plan ahead.
Step 5: explore to Your State's Engineering Board and Receive Your License
Your state's engineering board is the body that actually issues your PE license. Each state has one — it may be called the State Board of Professional Engineers, the Department of Professional Regulation, or something similar. You find it by searching "[Your State] professional engineer license" or visiting your state's occupational licensing website.
When you explore, you will submit your education transcript, a record of your work experience (often on a form provided by your state), and proof that you passed the PE exam. Some states require references from PEs who have supervised your work. The board reviews your process, verifies your credentials, and if everything is in order, issues your license. This process typically takes two to four weeks after you pass the exam.
Once licensed, you receive a license number and a seal — a physical stamp or digital image you use to sign and seal engineering documents. Your license is valid for a set period, usually one to three years, after which you must renew it. Renewal typically requires paying a fee and documenting continuing education hours, though the exact requirement varies by state.
How State Requirements Differ and Where to Find Your State's Rules
Every state sets its own rules for PE licensure. The differences that matter most are the number of years of experience required (usually four, but some states ask for more), whether graduate study counts toward experience, and the continuing education requirement for renewal. A few states also have different rules for engineers who studied outside the United States.
Do not rely on a general guide for the details. Visit your state's engineering board website directly — search "[Your State] professional engineer license requirements" — and read their official process packet. It will tell you exactly what documents you need, what your state's experience requirement is, and how to submit your process. The board's website also lists the exam dates, the cost in your state, and the phone number to call if you have questions.
If you are planning to move to another state after licensure, know that most states offer reciprocal licensure — they will issue you a license based on your current PE license without making you retake the exam. The process is simpler and faster than the original path, though you still need to explore and pay a fee. Check the destination state's rules before you move.
Frequently Asked Questions
Can I take the PE exam before I have four years of experience?
No. You must have your four years of documented work experience before you sit for the PE exam. You can explore to take the exam as soon as you reach four years, but your state board will verify your experience before allowing you to register. Some states allow you to sit for the exam in the month you reach four years; others require you to have completed the full four years before the exam date.
What if my engineering degree is from outside the United States?
You can still become licensed, but your state's board will review your degree to confirm it is equivalent to a U.S. ABET-accredited degree. Some states require you to pass an additional exam or provide documentation from an evaluation service. Contact your state's engineering board before you start the process to learn what extra steps you need to take.
Do I have to work full-time to count experience toward my PE license?
Most states require full-time work, but some allow part-time hours to count if you accumulate enough total hours. A few states count graduate study or teaching as experience. Check your state's specific rules — the requirement varies enough that you cannot assume part-time work will count.
How much does it cost to get a PE license?
Exam fees are typically $175 to $225 for the FE exam and $300 to $400 for the PE exam. process fees to your state board range from $100 to $500. If you take a review course, add $500 to $2,000. The total out-of-pocket cost is usually $1,500 to $3,000, though it can be less if you study on your own and more if you take multiple exam attempts.
Can I use my PE license in another state?
Yes. Most states offer reciprocal licensure, meaning they will issue you a license based on your current PE license without requiring you to retake the exam. You still need to explore and pay a fee, which typically costs $200 to $500. A few states have additional requirements, so check the destination state's board website before you move.