ACT® Calculator Policy Checker
Determine if your calculator is permitted for the ACT® exam. Enter your model and features below to check its status against the official policy.
Enter the full model name as written on your calculator.
Check any features your calculator has.
What is the ACT Calculator Policy?
The official ACT calculator policy is designed to ensure fairness and test security for all students. While you are encouraged to bring a calculator, not all devices are allowed. The core rule is that calculators may only be used on the Mathematics section of the test. You are not permitted to use a calculator on the English, Reading, or Science sections. The main restrictions target devices that can communicate wirelessly, have computer-like functionality (such as a QWERTY keyboard), or contain a Computer Algebra System (CAS), which can solve algebraic equations symbolically.
Essentially, any four-function, scientific, or graphing calculator is permitted as long as it is not on the specific list of prohibited models. Knowing whether you can use a calculator on the ACT and which one to bring is a key part of effective test preparation.
Permitted vs. Prohibited Calculators
There isn’t a simple “formula” for calculator approval, but rather a set of rules and lists managed by the ACT. The most significant factor is the presence of a Computer Algebra System (CAS). To help you understand, we’ve broken down the key features that determine a calculator’s status.
| Feature / “Variable” | Meaning | Status on ACT | Typical Range / Examples |
|---|---|---|---|
| Computer Algebra System (CAS) | Performs symbolic manipulation (e.g., solves for ‘x’). | Strictly Prohibited | TI-89, TI-Nspire CAS, HP Prime |
| Graphing Capability | Can plot equations on a coordinate plane. | Permitted (if non-CAS) | TI-84 Plus, Casio fx-9750GII |
| Scientific Functions | Handles trig, logs, exponents. | Permitted | TI-30XS, Casio fx-300ES Plus |
| QWERTY Keyboard | A typewriter-style keyboard. | Strictly Prohibited | Older organizer-style devices |
| Wireless/Internet | Can connect to other devices or networks. | Strictly Prohibited | Cell phones, tablets, smartwatches |
Practical Examples of Allowed and Banned Calculators
Example 1: A Permitted Calculator
- Input Model: TI-84 Plus CE
- Features: Graphing capability, no CAS.
- Result: Permitted. The TI-84 series is one of the most popular and widely accepted calculators for the ACT.
Example 2: A Prohibited Calculator
- Input Model: TI-89 Titanium
- Features: Contains a built-in Computer Algebra System (CAS).
- Result: Prohibited. All calculators beginning with TI-89 or TI-92 are banned because their CAS functionality can give an unfair advantage.
Example 3: A Conditionally Permitted Calculator
- Input Model: HP 48G
- Features: Has an infrared data port.
- Result: Permitted with Modification. You must cover the infrared port with opaque tape (like duct or electrical tape) to use this calculator.
How to Use This ACT Calculator Checker
Using this tool is straightforward and can save you from a major headache on test day. Follow these steps to determine if you can use a calculator on the ACT and if your specific model is compliant.
- Enter Your Calculator Model: Type the model name exactly as it appears on your device (e.g., “TI-36X Pro”) into the input field.
- Check for Prohibited Features: Review the list of checkboxes. If your calculator has any of these features, like a QWERTY keyboard or wireless capability, check the corresponding box.
- Check Status: Click the “Check Status” button.
- Interpret the Results: The tool will display one of three outcomes:
- Permitted: Your calculator is allowed.
- Prohibited: You cannot bring this calculator to the test.
- Permitted with Modification: Your calculator is allowed only if you make specific changes (e.g., removing paper tape).
Key Factors That Affect ACT Calculator Legality
Several key factors determine whether a calculator is allowed. Understanding these can help you choose the right tool for your ACT math prep.
- Computer Algebra System (CAS): This is the most common reason for a calculator to be banned. Devices like the TI-89 and HP Prime are prohibited for this reason.
- QWERTY Keyboards: Any calculator with a typewriter-style keyboard is not allowed.
- Communication Technology: Calculators with infrared, Bluetooth, or Wi-Fi capabilities are strictly forbidden. This includes all cell phones and smartwatches.
- Power Source: Calculators that need to be plugged into an electrical outlet are not permitted.
- Noise and Printing: Devices that make noise must be muted, and those with paper tape must have the tape removed before the test.
- Official Prohibited List: The ACT publishes a specific list of banned calculator models. Even if a calculator seems fine, it’s prohibited if it’s on this list. For more info, check our guide on the SAT vs ACT.
Frequently Asked Questions (FAQ)
1. Can I use a TI-89 or TI-92 on the ACT?
No. All models that begin with TI-89 or TI-92 are explicitly prohibited because they contain a Computer Algebra System (CAS).
2. Is the TI-Nspire allowed?
It depends. The standard TI-Nspire (non-CAS) is permitted. However, the TI-Nspire CAS is strictly prohibited. You must check your specific model.
3. What happens if I bring a banned calculator to the test?
If you are found with a prohibited calculator during the exam, you may be dismissed from the testing center, and your score will be voided.
4. Do I have to use a calculator on the ACT Math test?
No, a calculator is not required. Every question on the ACT Math test can be solved without one. However, using a familiar calculator wisely can help you save a significant amount of time.
5. Can I use a calculator on the Science section?
No. Calculators are only permitted during the mathematics section of the ACT. They are not allowed on the English, Reading, or Science sections.
6. Are all scientific calculators allowed?
Yes, generally all four-function and scientific calculators are allowed, as they do not have the advanced prohibited features like CAS or graphing keyboards. A great place to start is our list of best ACT prep books.
7. Can I share my calculator with another student?
No. Sharing calculators is not permitted under any circumstances during the test. It’s recommended to bring a backup calculator with fresh batteries.
8. What about the digital ACT?
For the digital version of the ACT, students can either bring their own approved calculator or use the graphing calculator built into the testing platform (Desmos). Be sure to check the ACT test dates for digital options.