ACT® Calculator Policy & Checker
Is Your Calculator Allowed on the ACT?
Enter your calculator’s model name and check its features to see if it complies with the official ACT calculator policy. This tool helps you find out if you can use your calculator on the ACT math test.
Deep Dive: Can a Calculator Be Used on the ACT?
Navigating the rules for test day can be stressful. One of the most common questions students ask is: can a calculator be used on the ACT? The short answer is yes, but only on the Mathematics Test, and only if your calculator meets the ACT’s strict guidelines. This policy exists to ensure fairness and prevent any student from having an unfair advantage. Understanding these rules is crucial, as bringing a prohibited device can lead to dismissal from the test.
What is the ACT Calculator Policy?
The ACT calculator policy outlines which calculators are permitted, which are prohibited, and which require modification before being used during the math portion of the exam. You can generally use a four-function, scientific, or graphing calculator. However, the core rule is that devices with features that provide an unfair advantage, such as Computer Algebra Systems (CAS), are strictly forbidden. All problems on the ACT can be solved without a calculator, but using a familiar and approved device can significantly improve your speed and accuracy.
Common Misconceptions
- “Graphing calculators are banned”: This is false. Most graphing calculators, like the popular TI-84 Plus series, are perfectly acceptable. The ban applies to specific models with advanced functionality.
- “You need the most expensive calculator”: Not true. Familiarity is more important than features. A scientific calculator you know well is better than an advanced graphing calculator you’ve never used.
- “All calculators of a certain brand are okay”: This is a dangerous assumption. For example, the TI-Nspire (non-CAS) is permitted, but the TI-Nspire CAS is banned. You must check your specific model.
ACT Calculator Rule Breakdown
Instead of a single formula, the ACT’s policy is a set of rules. The easiest way to understand whether a calculator can be used on the ACT is to check its features against the prohibited list. Any calculator with the features below is not allowed.
| Feature / Rule | Status | Official ACT Rationale |
|---|---|---|
| Computer Algebra System (CAS) | Prohibited | Performs symbolic algebra (e.g., simplifies expressions, solves for variables), giving an unfair advantage. |
| QWERTY-style Keyboard | Prohibited | Resembles a computer keyboard, posing a risk for storing text notes. |
| Wi-Fi, Bluetooth, or Internet Access | Prohibited | Allows for external communication, which is a major security risk. |
| Cell Phones, Tablets, Laptops | Prohibited | These are not dedicated calculators and have countless prohibited features. |
| Makes Noise or Prints | Requires Modification | Sound must be muted, and paper tape must be removed to avoid distracting other test-takers. |
| Infrared Data Port | Requires Modification | Port must be completely covered with opaque tape (e.g., duct tape). |
Practical Examples (Real-World Use Cases)
Let’s see how the policy applies to common calculators.
Example 1: Student with a Texas Instruments TI-84 Plus CE
- Input to Checker: Model “TI-84 Plus CE”, no prohibited features checked.
- Result: PERMITTED.
- Financial Interpretation: This is a standard, widely-used graphing calculator and is one of the most popular choices for the ACT. It does not have a CAS. Students can confidently bring this calculator to the test. This demonstrates how a student can verify their device meets the requirements for a tool that can be used on the ACT.
Example 2: Student with a Texas Instruments TI-89 Titanium
- Input to Checker: Model “TI-89 Titanium”.
- Result: PROHIBITED.
- Financial Interpretation: The TI-89 series is explicitly banned by the ACT because it contains a Computer Algebra System (CAS). Even if the student is very familiar with it, they must acquire a different, approved calculator for test day. This is a clear case where a specific model of calculator cannot be used on the ACT.
How to Use This ACT Calculator Permissibility Checker
Using this tool is a straightforward way to check if your calculator model is likely to be allowed.
- Enter Model Name: Type the model of your calculator (e.g., “Casio fx-9750GII”) into the input field. Our tool has a list of known prohibited models.
- Check for Banned Features: If you know your calculator has a CAS, a QWERTY keyboard, or wireless capabilities, check the corresponding boxes. This will immediately flag it as prohibited.
- Review the Result: The tool will provide one of three outputs:
- PERMITTED: Your calculator is not on the prohibited list and does not have explicitly banned features.
- PROHIBITED: Your calculator model is on the official banned list or has a feature that is not allowed.
- CHECK MANUALLY: The model is not on our prohibited list, but it’s not a common model. You MUST double-check its features against the official ACT policy.
- Decision-Making Guidance: If your calculator is prohibited, you need to get a new one for the test. See our related resources for suggestions on approved models.
Key Factors That Affect ACT Calculator Legality
Understanding these factors is the key to determining if a calculator can be used on the ACT.
- Computer Algebra System (CAS): This is the most common reason for a calculator to be banned. A CAS can solve equations algebraically, simplify expressions, and perform calculus functions symbolically. Models like the TI-89, TI-92, HP Prime, and Casio ClassPad are banned for this reason.
- QWERTY Keyboard: Any calculator with a keyboard laid out like a computer (QWERTY) is prohibited. This prevents students from storing and accessing notes.
- Communication Technology: Any device that can communicate wirelessly (Infrared, Bluetooth, Wi-Fi) is banned. Infrared ports on older models must be covered with opaque tape.
- Power and Noise: Calculators needing an electrical outlet are not allowed. Any device that makes sounds must be muted.
- Programs and Documents: You must remove any programs that have CAS functionality and delete all documents from your calculator’s memory before the test. Test proctors may inspect your device.
- Physical Form: The device must be a dedicated, handheld calculator. Phones, tablets, laptops, or electronic writing pads are not permitted, even if you are only using their calculator app. For insights on practice, check our guide to ACT practice tests.
Frequently Asked Questions (FAQ)
1. Is the TI-84 Plus CE allowed on the ACT?
Yes, the TI-84 Plus CE is one of the most popular and fully approved calculators for the ACT. It does not have a CAS and is a great choice for the exam. Thinking about whether a graphing calculator can be used on the ACT often leads to this model.
2. Can I use the calculator on all sections of the ACT?
No. Calculator use is permitted ONLY on the Mathematics Test section. You cannot use it on the English, Reading, or Science sections.
3. What is a Computer Algebra System (CAS) and why is it banned?
A CAS is a sophisticated program that can manipulate mathematical expressions in a symbolic way, much like a human would. For example, it can solve `2x + 5 = 15` for `x`. This is considered an unfair advantage, so any calculator with CAS is prohibited.
4. What happens if I bring a prohibited calculator to the test?
If you are found with a prohibited calculator, it will be confiscated, and you may be dismissed from the test center, and your score will be voided. It is your responsibility to know if your calculator is permitted.
5. Do I need to clear my calculator’s memory?
Yes, it is highly recommended and sometimes required. You must remove all programs with CAS functionality and any stored documents. Proctors have the right to inspect your calculator’s memory. Check our ACT test day checklist for more tips.
6. Is a scientific calculator good enough for the ACT?
Absolutely. All math problems on the ACT can be solved without a calculator at all. A good scientific calculator like the TI-30XS MultiView is often faster for many calculations than a graphing calculator and is a great option. The question of whether a specific calculator can be used on the ACT is often more about features than type.
7. Are there any approved calculator lists?
The ACT provides a list of explicitly PROHIBITED calculators but not a comprehensive “approved” list because too many models exist. The rule is: your calculator is allowed unless it’s on the prohibited list or has prohibited features. Brands like Texas Instruments list their approved models. Our list of best ACT prep books might also help.
8. Can I use my phone as a calculator if it’s in airplane mode?
No, absolutely not. Cell phones and any other communication devices are strictly prohibited from being used as calculators under any circumstances.
Related Tools and Internal Resources
Preparing for the ACT involves more than just knowing if your calculator can be used on the ACT. Explore these resources to help you prepare.
- College GPA Calculator: A tool to calculate your grade point average.
- Digital SAT vs. ACT: An article comparing the two major college entrance exams.
- ACT Scoring Guide: Understand how the ACT is scored and what your target score should be.
- Final Grade Calculator: Figure out what you need on your final exam to get the grade you want.