Fe Exam Approved Calculators

Optimize your FE Exam strategy by calculating time-efficiency and score projections based on NCEES-approved calculator models.

Comparison of Top NCEES FE Exam Approved Calculators

Model Name	Power Source	Key Feature	Display Type
TI-36X Pro	Solar & Battery	MultiView™ Display	4-line LCD
Casio FX-115ES Plus	Solar & Battery	Natural Textbook Display	Dot Matrix
HP 35s	Battery Only	RPN Logic Entry	2-line LCD
Casio FX-991EX	Solar & Battery	High Resolution LCD	192 x 63 pixels

What is fe exam approved calculators?

When preparing for the Fundamentals of Engineering (FE) exam, understanding fe exam approved calculators is the most critical logistical step a candidate can take. NCEES (National Council of Examiners for Engineering and Surveying) maintains a very strict policy regarding which devices are permitted in the testing center. Using a non-approved device can lead to immediate disqualification and forfeiture of exam fees.

The primary purpose of the fe exam approved calculators policy is to ensure exam integrity. Modern graphing calculators have extensive memory and communication capabilities that could be used to store formulas or transmit exam content. The approved list focuses on scientific calculators that provide powerful engineering functions—such as matrix math, complex numbers, and integration—without the risk of programmable cheating features.

Who should use these tools? Any engineering graduate or student pursuing their professional engineer licensing should familiarize themselves with these models early in their study process. A common misconception is that all scientific calculators are allowed; in reality, only specific series from Casio, HP, and Texas Instruments are permitted.

FE Exam Approved Calculators Formula and Mathematical Explanation

Success on the FE exam isn’t just about what you know; it’s about how fast you can recall and calculate. The “Time-Efficiency Formula” for the FE exam can be expressed as follows:

Efficiency Score (E) = (Q_total × T_avg) / T_limit

Where your choice of fe exam approved calculators impacts T_avg (the average time per problem). A calculator with a “Natural Display” allows you to enter equations exactly as they appear in the NCEES Reference Handbook, reducing the time spent on formatting and syntax errors.

Variable	Meaning	Unit	Typical Range
Qtotal	Total Exam Questions	Count	110
Tavg	Time Per Question	Seconds	120 – 240
Tlimit	Total Exam Duration	Minutes	320 (5.33 hours)
Arate	Accuracy Rate	Percentage	60% – 90%

Practical Examples (Real-World Use Cases)

Example 1: The TI-36X Pro Speed Test

A student using the TI-36X Pro (one of the most popular fe exam approved calculators) spends an average of 150 seconds per question. With 110 questions, their total active calculation time is 16,500 seconds, or 275 minutes. This leaves them with a 45-minute buffer to review flagged questions within the 320-minute limit. If their accuracy is 70%, they project a raw score of 77 correct answers.

Example 2: The HP 35s RPN Efficiency

An engineer skilled in Reverse Polish Notation (RPN) using the HP 35s might reduce their keystrokes by 20%. If they average 140 seconds per question, they complete the exam in roughly 256 minutes. This high efficiency provides a massive 64-minute cushion, allowing for deeper focus on difficult “Alternative Item Type” (AIT) questions common in the FE Civil study plan.

How to Use This FE Exam Approved Calculators Calculator

Optimizing your performance requires realistic data. Follow these steps to use the calculator above:

1. Select your model: Choose from the dropdown list of fe exam approved calculators. Each model has a slight efficiency multiplier based on its display and function capabilities.
2. Enter your speed: Input your average time per problem in seconds. You can determine this by timing yourself during a practice session from a best FE exam prep course.
3. Estimate accuracy: Be honest about your current practice exam scores. Most candidates need roughly 60-70% correct to pass, though NCEES uses a scaled scoring system.
4. Review the Chart: The “Time Utilization” bar shows how much of your 5 hour and 20 minute window you are consuming. If the bar turns red, you are at risk of not finishing.
5. Analyze Results: Use the “Efficiency Rating” to decide if you need to switch to a more capable calculator or improve your typing speed.

Key Factors That Affect FE Exam Approved Calculators Results

• Input Logic: Most fe exam approved calculators use Algebraic notation, but the HP 35s offers RPN, which can be faster for complex chained calculations if mastered.
• Display Type: Multi-line displays (like on the TI-36X Pro) allow you to see previous entries, making it easier to check for errors without re-typing everything.
• Function Access: Look for calculators that have dedicated buttons for common FE tasks like standard deviation, vector dot products, and unit conversions.
• Power Reliability: Dual-power (solar + battery) models are highly recommended. If your calculator dies during the exam, testing centers will not provide a replacement.
• Button Feel: During a high-stress 6-hour exam, the tactile response of the buttons can prevent double-entry errors.
• Memory Clear Policy: You must know how to reset your fe exam approved calculators quickly, as proctors will often require a memory clear before the session starts.

Frequently Asked Questions (FAQ)

Can I bring two FE exam approved calculators?

Yes, NCEES allows you to bring multiple approved calculators into the testing room, though they must all be on the official list.

Is the TI-84 an FE exam approved calculator?

No. Graphing calculators like the TI-84, TI-89, and Inspire series are strictly prohibited due to their memory and graphing capabilities.

What is the best fe exam approved calculator for Civil Engineering?

The TI-36X Pro is widely considered the best due to its ease of use with the NCEES handbook and its ability to solve 3×3 matrices and definite integrals quickly.

Do I need to show my calculator to the proctor?

Yes, proctors will inspect your fe exam approved calculators during the check-in process to verify the model number.

How does calculator choice affect the FE Mechanical exam?

For the FE exam requirements in Mechanical, thermodynamics and fluid problems often require solving for variables. A calculator with a robust “Solver” function is a major advantage.

Can I use a Casio FX-991EX?

Yes, the Casio FX-991 series is part of the fe exam approved calculators list and is favored for its high-resolution screen.

What happens if my calculator is not on the list?

The proctor will confiscate it before you enter the testing room. You will have to take the exam using the “on-screen” scientific calculator provided by the Pearson VUE software, which is much slower to use.

Is score calculation affected by the calculator model?

While the calculator doesn’t change how NCEES calculates your scaled score, it significantly affects your ability to answer more questions correctly within the time limit. Learn more at FE exam scoring explained.