Wondering how long you’ll be sitting in that test center chair for the PE exam?
It’s not just about the hours; it’s about how the exam day unfolds, what’s included, and how to manage your time effectively.
There are over 20 different PE exams, but most follow the same format and length. On average, about 65% of first-time test takers pass, so understanding the structure can give you a real edge.
In this guide, I’ll break down the exam length, what to expect on test day, how many questions you’ll face, and time management tips to help you walk in confident and walk out a step closer to your PE license.
Key Takeaways
- PE Exam Length: Most PE exams last multiple hours, with a morning and afternoon session.
- Computer-Based Format: All exams are CBT, offered year-round at Pearson VUE test centers.
- Question Count: Expect 80–85 multiple-choice questions, depending on your discipline.
- Breaks Included: You’ll get a 50-minute scheduled break around the midpoint.
- Discipline Variations: Most exams are 8 hours, but the Structural Engineering exam takes two days.
The Basics: How Long Is the PE Exam?
The PE exam is typically 8 hours long, made to test the principles and practice of engineering in your specific discipline. It’s divided into a morning session, a scheduled 50-minute break, and an afternoon session.
For first-time test takers, this can feel like a marathon. But once you understand the flow of exam day, the structure becomes much more manageable..
An Inside Look: PE Exam Format
The PE exam is now a computer-based test. That means no paper booklets or heavy binders; you’ll be sitting at a Pearson VUE testing station with all the NCEES-approved reference materials available on screen.
- 80–85 multiple-choice questions
- Split across morning and afternoon sessions
- Computer-based exam with searchable references
The exam specifications vary by particular engineering discipline. The specs outline exactly what exam topics are covered and how the questions are weighted.
What Exam Day Looks Like
Plan for about 9–10 hours total at the test center. The exam takes 8 hours, but check-in, security screening, and instructions add extra time
Here’s a snapshot of what the day feels like:
- Check in with ID at the test center
- Security procedures before you sit down
- Morning session (about 4 hours)
- 50-minute scheduled break
- Afternoon session (another 4 hours)
- Final review and submitting answers
💡 Pro Tip: Don’t use your break to review problems; use it to reset. Eat something light, hydrate, and step away from the screen. A clear head going into the afternoon session makes a huge difference.

Variations Across Engineering Disciplines
Most PE exams last eight hours, but there are differences depending on your discipline:
- Civil PE Exam: Standard 8-hour format with morning and afternoon sessions.
- PE Electrical Exam: Same length, covering areas like power, electronics, and computer engineering.
- Power Exam: 8 hours with heavy focus on power systems, protection, and analysis.
- Communications Exam: Same structure, but topics focus on electrical and computer communications.
- Structural Engineering (SE) Exam: Exception, this one is 16 hours, taken over two exam days.
So while most PE exams stick to the eight-hour format, some specialties dig much deeper.
PE Exam Specifications
| PE Exam (Grouped) | Testing Time | Break | Questions |
|---|---|---|---|
| Civil, Mechanical, Chemical, Power, Environmental | 8 hours | 50 min | 80 |
| Petroleum, Nuclear, Fire Protection, Industrial & Systems, Agricultural & Biological, Architectural, Computer, Electronics/Controls/Comm, Mining, Naval | 8.5 hours | 50 min | 85 |
| Structural (2-Days) | 8 hrs/day (16 total) | ~50 min/day | 55/day (110 total) |
What About Other PE Exams?
NCEES offers over 20 PE exams across disciplines. Most share the same structure, but the content is tailored; for example, electrical exams focus on circuits and systems, while civil exams emphasize design standards and structural loads.
Most PE exams are available year-round, with registration through the NCEES website. For CBT exams, results are usually released within 7–10 days.
PE Exam Timing & Study Tips
With 8 hours on the clock, pacing is critical. You’ll have about 6 minutes per question, which means some problems will need to be solved quickly so you don’t get stuck on tougher ones.
The best way to prepare is to train under exam-like conditions:
- Solve practice problems with a timer to build speed
- Take full-length mock exams to build endurance
- Simulate exam day with a morning and afternoon study block
- Get familiar with the on-screen reference materials and tools you’ll use at Pearson VUE
- Focus on your weaker topics so you don’t burn time during the exam
Examinees who study this way for months find the real test day much more manageable.
Final Thoughts: PE Exam Recap
The PE exam isn’t just a test of knowledge; it’s a test of stamina. You’ll spend hours answering multiple-choice questions, with a scheduled break in the middle. The exam day feels long, but it’s structured and predictable.
Whether you’re a first-time test taker or coming back as a repeat test taker, practicing with time limits and using your own study materials is what will carry you across the finish line. Passing means more than a score; it’s the step that takes you from engineer to licensed professional engineer.
Choose your path, make your study plan, and let the PE license be the move that takes you there.
FAQs
Yes. All PE exams are now computer-based and administered at Pearson VUE test centers. You’ll use on-screen, NCEES-approved reference materials; personal books or notes aren’t allowed.
Most PE exams are 8 hours long, with 80–85 multiple-choice questions split between a morning and afternoon session. The Structural Engineering exam is the main exception, taking place over two days.
Most PE exams are offered year-round, but a few, like Fire Protection or Petroleum, are only available once per year. Check your specific discipline’s schedule on the NCEES website.
Registration is done through the NCEES website. Once your state licensing board confirms you’re eligible, you can pick your exam date and select a Pearson VUE test center.
You won’t be allowed to bring any physical materials. Instead, all reference documents are provided digitally on the computer, and you’ll have access to them throughout the exam.

