Calculators You Can Use on the FE Exam
NCEES Approved Model Verification & Efficiency Analyzer
Only these specific brands and series are permitted by NCEES.
How comfortable are you with the advanced functions (matrices, vectors, solving)?
Total hours spent using this specific model for engineering problems.
Compliance Status
APPROVED
95%
High
5 More Hours
Device Utility vs. Proficiency Chart
The gap between these bars represents untapped calculator potential.
| Model Series | Matrix Size | Equation Solver | Solar Power | Price Est. |
|---|---|---|---|---|
| Casio fx-115/991 | 4×4 | Yes | Yes | $20 – $25 |
| TI-36X Pro | 3×3 | Yes | Yes | $22 – $28 |
| HP 35s | Varies | Yes | No | $100+ (Rare) |
| TI-30X Series | No | No | Varies | $15 – $20 |
What are Calculators You Can Use on the FE Exam?
The calculators you can use on the FE exam are restricted to a very specific list maintained by the National Council of Examiners for Engineering and Surveying (NCEES). This policy is strictly enforced to ensure exam integrity and fairness for all candidates. Using a non-approved device can lead to immediate disqualification and your exam results being nullified.
Engineering students and professionals should select a model from the approved list early in their study process. The goal is to become second-nature with the device’s specific key sequences for complex numbers, unit conversions, and statistical distributions. Common misconceptions include the belief that any non-programmable calculator is allowed; however, NCEES specifically names brands and series, excluding many popular scientific models from brands like Sharp or Canon.
Calculators You Can Use on the FE Exam Formula and Mathematical Explanation
While there isn’t a “formula” for compliance, we use an Exam Readiness Index (ERI) to help students understand their preparation level based on the device chosen. The index is calculated as follows:
ERI = (Feature Score × Familiarity Weight) + (Practice Time Adjustment)
| Variable | Meaning | Unit | Typical Range |
|---|---|---|---|
| Feature Score | The raw capability of the device (0-100) | Points | 60 – 95 |
| Familiarity Weight | User’s manual proficiency | Percentage | 0% – 100% |
| Practice Time | Hours spent training with the model | Hours | 10 – 50 hrs |
Practical Examples (Real-World Use Cases)
Example 1: The Casio Efficiency
A student uses the Casio fx-115ES PLUS (one of the top calculators you can use on the FE exam). They have 40 hours of practice and 90% familiarity. Their ERI would be high because the Casio handles 4×4 matrices and complex integration natively, saving approximately 3-5 minutes per relevant exam section compared to a basic TI-30X.
Example 2: The HP 35s RPN Advantage
A professional engineer prefers Reverse Polish Notation (RPN). They use the HP 35s. Despite its higher cost and lack of solar power, their familiarity with RPN allows them to calculate multi-step fluid dynamics equations 20% faster than standard algebraic entry models. This makes it one of the most powerful calculators you can use on the FE exam for those trained in RPN.
How to Use This Calculators You Can Use on the FE Exam Calculator
- Select Model: Choose your current or intended model from the dropdown.
- Assess Familiarity: Be honest about your ability to use “Shift” or “Mode” functions without looking at a manual.
- Input Practice Hours: Enter how many hours you have logged specifically using that device.
- Analyze Results: View your Compliance Status and Efficiency Score. If the status says “DISQUALIFIED,” you must purchase an approved model immediately.
Key Factors That Affect Calculators You Can Use on the FE Exam Results
- NCEES Brand Restriction: NCEES only allows Casio, HP, and Texas Instruments. Any other brand is strictly prohibited.
- Matrix Capabilities: Modern FE exams (especially Civil and Mechanical) require matrix math. Models like the TI-36X Pro handle 3×3 matrices, which is a major time-saver.
- Equation Solving: The ability to solve for ‘x’ in a complex algebraic expression is the primary reason why the calculators you can use on the FE exam are so limited.
- Solar vs. Battery: Many exam centers are brightly lit, making solar a reliable backup. However, battery-only models like the HP 35s require checking battery levels before the test.
- Button Tactility: In a high-stress environment, “mushy” buttons can lead to data entry errors. The TI-36X Pro is often cited for its superior tactile feedback.
- Display Layout: Multi-line displays allow you to see previous entries, which is crucial for verifying long calculations in the fe exam prep guide.
Frequently Asked Questions (FAQ)
No. Graphing calculators are strictly prohibited. You must use one of the approved calculators you can use on the FE exam list, such as the TI-36X Pro.
Most experts recommend the TI-36X Pro or the Casio fx-115ES PLUS due to their multi-line displays and robust equation solvers. Follow a how to pass the fe exam strategy to master these tools.
No. You must remove the cover/lid and store it in your locker or under the desk as per the ncees calculator policy.
Yes, NCEES generally allows you to bring a backup as long as both are on the calculators you can use on the FE exam list. Check with your specific testing center for local rules.
Yes, the fx-991 series is part of the approved Casio family. It is actually one of the fastest processors available for the FE exam.
Yes, the TI-30Xa is allowed, but it is not recommended because it lacks a multi-line display and many advanced engineering functions needed for fe exam study materials.
Testing centers do not provide calculators. This is why many candidates prefer solar-powered calculators you can use on the FE exam or bring a spare.
No, the list of calculators you can use on the FE exam is the same as the list for the PE exam. Mastering one device now will help you meet engineering license requirements later.
Related Tools and Internal Resources
- FE Exam Prep Guide: A comprehensive roadmap to passing your fundamentals exam on the first try.
- Pass the FE Exam Strategy: Tips and tricks for managing your time during the 5-hour test.
- NCEES Calculator Policy Update: Stay informed about the latest changes to the official approved list.
- FE Study Materials: Essential practice problems and reference manuals for all disciplines.
- PE License Requirements: Understanding the path from EIT to a Professional Engineer license.
- EIT Certification Steps: How to register your results and get your official certification.