ACT Calculator Policy Checker
Instantly determine if your calculator is permitted for use on the ACT test.
Is Your Calculator ACT-Approved?
What is the ACT Calculator Policy?
The ACT calculator policy outlines the rules for using a calculator on the math portion of the ACT test. The policy is designed to ensure fairness for all test-takers and prevent any unfair advantages. While every math problem on the ACT can be solved without a calculator, using an approved device can significantly improve your speed and accuracy. This calculator helps you quickly determine if your specific device meets the ACT’s strict requirements, so you know exactly when can you use a calculator on test day.
ACT Calculator Rules and Prohibitions
The core rule is that any four-function, scientific, or graphing calculator is permitted as long as it is NOT on the prohibited list. The calculator on this page simplifies these rules into a few key questions. Answering them will help you understand your calculator’s status.
| Prohibited Feature | Meaning | Typical Models | Status |
|---|---|---|---|
| Computer Algebra System (CAS) | Can symbolically solve equations (e.g., solve for x). | TI-89, TI-92, TI-Nspire CAS, HP 50G | Prohibited |
| QWERTY Keyboard | A lettered keyboard like a computer. | Any device with a full text keyboard. | Prohibited |
| Communication Device | Part of a phone, tablet, or laptop. | iPhone, Android, Laptops | Prohibited |
| Needs External Power | Must be plugged into an outlet to work. | Calculators with power cords. | Prohibited |
Practical Examples
Example 1: The Ideal Calculator
A student has a TI-84 Plus CE. Let’s run it through the calculator:
- Prohibited Model? No
- CAS? No
- QWERTY Keyboard? No
- Communication Device? No
- Needs Power Cord? No
Result: PERMITTED. The TI-84 Plus series is one of the most popular and best calculators for the ACT.
Example 2: A Prohibited Calculator
Another student has a TI-89 Titanium. Let’s check its status:
- Prohibited Model? Yes (The TI-89 series is explicitly banned).
- CAS? Yes
Result: PROHIBITED. This calculator is not allowed because it has a Computer Algebra System (CAS). Check out our guide on ACT vs SAT to see how policies differ.
How to Use This ACT Calculator Checker
Using this tool to see when can you use a calculator is straightforward. Follow these steps:
- Answer Each Question: Go through each dropdown and select “Yes” or “No” based on your calculator’s features.
- Check the Result: Click the “Check My Calculator” button. The result box will immediately tell you if your calculator is “PERMITTED” or “PROHIBITED”.
- Review Explanations: The intermediate results section will explain which specific rule led to the outcome, giving you a clear understanding of the policy.
- Reset if Needed: If you want to check another calculator, simply press the “Reset” button to clear the form. Understanding your ACT score is important, and so is having the right tools.
Key Factors That Affect Calculator Approval
- Computer Algebra System (CAS): This is the most common reason a powerful graphing calculator is banned. CAS can perform algebraic manipulations that are considered an unfair advantage.
- Model Number: The ACT explicitly prohibits certain models. Always check if your model number is on the banned list, such as the TI-89 or HP 49G/50G series.
- Connectivity: Any calculator that can communicate wirelessly (Infrared, Bluetooth, Wi-Fi) or is part of a device like a phone or tablet is strictly forbidden.
- Keyboard Layout: Calculators with QWERTY keyboards are not allowed as they could be used to store notes.
- Power Source: A calculator must be battery-operated. Devices requiring a power cord are not permitted in the testing room.
- Modifications: Some older calculators with features like infrared ports must have them covered with opaque tape. Sound features must be turned off. Knowing these rules is a key part of any good ACT study plan.
Frequently Asked Questions (FAQ)
Can I use a TI-84 Plus on the ACT?
Yes, all versions of the TI-84 Plus, including the CE, are permitted on the ACT as they do not have CAS functionality.
Is the TI-Nspire allowed on the ACT?
The standard TI-Nspire (non-CAS) is allowed. However, the TI-Nspire CAS model is explicitly prohibited.
What happens if I bring a prohibited calculator?
The testing staff will not allow you to use it. You may be dismissed from the test, and your score could be voided.
Do I have to clear my calculator’s memory?
It is highly recommended. You should clear any programs or documents stored on your calculator to avoid any issues with proctors. This is an important step when you are preparing for the ACT.
Can I use my phone’s calculator?
No. All cell phones and other communication devices are strictly prohibited during the test.
Are four-function calculators allowed?
Yes, simple four-function calculators are perfectly acceptable for the ACT.
Can I share my calculator with someone else?
No, sharing calculators is not permitted during the test.
Can I use a calculator on all sections of the ACT?
No, calculators are only permitted for the Mathematics section of the ACT.
Related Tools and Internal Resources
After checking your calculator, explore our other resources to get fully prepared for test day.
- What Is a Good ACT Score? – Understand the score you should be aiming for.
- ACT Test Dates – Find the next available test date to register.
- ACT Science Practice – Hone your skills for the science section.
- Free ACT Practice Test – Take a full-length practice test to gauge your readiness.