ACT Approved Calculators Guide
Check Your Calculator’s ACT Approval Status
Select your calculator model from the list below to instantly check if it’s one of the ACT approved calculators for test day.
Choose a popular model to see its status. This list is not exhaustive.
| Model | Type | Status |
|---|---|---|
| TI-84 Plus / TI-84 Plus CE | Graphing | Approved |
| TI-Nspire CX (non-CAS) | Graphing | Approved |
| TI-30XS MultiView | Scientific | Approved |
| Casio fx-9750GII | Graphing | Approved |
| TI-89 Titanium | Graphing (CAS) | Prohibited |
| TI-Nspire CX CAS | Graphing (CAS) | Prohibited |
| HP Prime | Graphing (CAS) | Prohibited |
What Are ACT Approved Calculators?
ACT approved calculators are specific electronic devices that students are permitted to use during the mathematics section of the ACT test. The ACT has a detailed policy designed to ensure fairness for all test-takers and prevent any student from having an unfair advantage. While all math problems on the ACT can be solved without a calculator, using a familiar and permitted device can help you manage your time effectively and reduce simple calculation errors. Understanding the list of ACT approved calculators is a critical part of test preparation.
The policy distinguishes between four-function, scientific, and graphing calculators, most of which are allowed. The primary restriction is against calculators with Computer Algebra System (CAS) functionality. CAS can perform algebraic manipulations, such as solving equations or factoring polynomials, which would undermine the skills the test is designed to assess. Other prohibited devices include cell phones, laptops, tablets, and any calculator with a QWERTY-style keyboard.
ACT Calculator Policy Explained
There isn’t a mathematical formula for determining if a calculator is approved. Instead, the ACT provides a set of rules based on a calculator’s features. A device’s status as one of the ACT approved calculators depends entirely on its built-in capabilities. The core principle is simple: the calculator should be a tool for computation, not for solving problems algebraically or storing information.
The determination process can be broken down into a series of checks:
- Check for Computer Algebra System (CAS): Does the calculator have CAS? Models like the TI-89, TI-92, and TI-Nspire CAS are explicitly prohibited for this reason.
- Check Keyboard Layout: Does it have a QWERTY keyboard (like a computer)? These are not allowed.
- Check for Communication Features: Does it have an infrared port or other wireless capabilities? If so, the port must be completely covered with opaque tape.
- Check for External Power: Can the calculator be plugged into an outlet? If so, the power cord must be removed.
- Check for Noise/Printing: Calculators that make noise must be muted, and those with paper tape must have the tape removed.
| Feature | Meaning | ACT Policy Status | Example Models Affected |
|---|---|---|---|
| CAS Functionality | Performs symbolic algebra (e.g., solve, factor). | Prohibited | TI-89, HP Prime, Casio ClassPad |
| QWERTY Keyboard | A-Z letter keys in standard keyboard layout. | Prohibited | (Rare on modern calculators) |
| Infrared Port | Allows wireless data transfer. | Modification Required | HP 38G/39G/48G series |
| External Power Cord | Plugs into a wall outlet for power. | Modification Required | (Some older printing models) |
| Standard Graphing | Plots functions and analyzes data (non-CAS). | Approved | TI-84 Plus, Casio fx-9750GII |
Practical Examples: Which Calculators are Allowed?
Navigating the list of ACT approved calculators can be confusing. Here are two real-world examples to clarify the rules.
Example 1: The Everyday Champion (TI-84 Plus CE)
- Calculator: Texas Instruments TI-84 Plus CE
- Analysis: This is one of the most popular graphing calculators. It does NOT have a Computer Algebra System (CAS). It has a standard numeric keypad with math functions, but no QWERTY keyboard. It is battery-powered and has no prohibited communication ports.
- Conclusion: The TI-84 Plus CE is fully approved for the ACT exam. No modifications are needed. It’s a reliable choice for test day.
Example 2: The Powerful But Prohibited (TI-89 Titanium)
- Calculator: Texas Instruments TI-89 Titanium
- Analysis: This calculator is explicitly listed by the ACT as prohibited. The reason is its built-in Computer Algebra System (CAS), which allows it to perform symbolic algebraic operations. This capability provides an unfair advantage according to ACT policies.
- Conclusion: The TI-89 Titanium is prohibited. Bringing this calculator to the test will result in it being confiscated, and you may be dismissed from the exam. This highlights the importance of checking your model against the list of ACT approved calculators.
How to Use This ACT Approved Calculators Checker
This tool simplifies the process of verifying your calculator against the official ACT policy. Follow these steps to ensure you’re prepared for test day.
- Select Your Model: Click the dropdown menu labeled “Calculator Model.”
- Find Your Calculator: Scroll through the list of common models and select the one you own or plan to use.
- Review the Results: The tool will instantly display the status: “Approved,” “Prohibited,” or “Modification Required.”
- Read the Details: The results section provides the specific reason for the status based on the ACT’s rules (e.g., “Prohibited due to Computer Algebra System (CAS)”). It will also state if any action, like covering a port, is needed.
- Reset if Needed: Click the “Reset” button to clear the selection and check another model.
By using this checker, you can avoid a stressful situation on test day. Knowing your device is one of the ACT approved calculators provides peace of mind.
Key Factors That Affect Calculator Approval
Several key features determine whether a calculator is permitted. Understanding these factors is crucial for selecting from the wide array of ACT approved calculators.
- Computer Algebra System (CAS): This is the most significant factor. If a calculator can perform symbolic math, it is banned.
- QWERTY Keyboards: Any device with a typewriter-like keyboard is prohibited to prevent storing notes.
- Communication Technology: Calculators cannot have any form of wireless communication. Infrared ports are a specific example that must be physically blocked.
- External Power Sources: Devices must be battery-operated. Power cords are not allowed during the test.
- Programs and Documents: Even on an approved model like a TI-84, proctors may require you to clear all programs and applications before the test begins to ensure no unfair formulas or notes are stored.
- Noise and Printing: Any feature that could distract other test-takers, like audible beeps or a paper tape printer, must be disabled.
Frequently Asked Questions (FAQ)
1. Can I use a calculator on all sections of the ACT?
No. Calculators are only permitted during the Mathematics section of the ACT. You cannot use a calculator on the English, Reading, or Science sections.
2. What happens if I bring a prohibited calculator?
Testing staff will confiscate the prohibited calculator. You may be dismissed from the test, and your score could be voided. It’s essential to verify you have one of the ACT approved calculators before test day.
3. Is the TI-Nspire allowed on the ACT?
It depends on the model. The TI-Nspire (non-CAS) version is permitted. However, the TI-Nspire CAS version is strictly prohibited because of its computer algebra system.
4. Do I need to clear the memory on my calculator?
Yes, it’s a very good idea. Test proctors may inspect your calculator and require you to clear any stored programs or applications to ensure you don’t have stored notes or formulas. It’s best to do this beforehand.
5. What if my calculator runs out of batteries?
You are responsible for ensuring your calculator is in working order. It is highly recommended to install fresh batteries before the test and bring a backup set of batteries or even a second, pre-approved backup calculator.
6. Are all scientific calculators ACT approved calculators?
Almost all standard scientific calculators (like the TI-30X series) are approved because they do not have prohibited features like CAS or graphing capabilities.
7. Can I share a calculator with a friend?
No. Sharing calculators during the test is not permitted under any circumstances.
8. Do I really need a calculator for the ACT?
While all problems can technically be solved without one, you are at a disadvantage if you don’t use one. A calculator helps save significant time on complex arithmetic, allowing you to focus on the problem-solving logic. Using one of the ACT approved calculators is highly recommended.