ACT® Calculator Policy Guide
What Calculator Can You Use on the ACT?
Enter your calculator model below to instantly check if it’s permitted for use on the ACT test. Our tool cross-references your model with the official ACT calculator policy to give you immediate results, ensuring you arrive on test day with an approved device. Understanding what calculator you can use on the ACT is a critical step in your preparation.
Status Details
What is the ACT Calculator Policy?
The ACT calculator policy is a set of rules designed to ensure fairness and test security for all students. The core principle is that while calculators are permitted and encouraged for the Mathematics Test, they cannot provide an unfair advantage. All questions on the ACT Math section can be solved without a calculator, but using a familiar and approved device can significantly improve your speed and accuracy. Knowing what calculator you can use on the ACT is essential; bringing a prohibited device can lead to dismissal from the test.
In general, you may use any 4-function, scientific, or graphing calculator, provided it is not on the official prohibited list. The main restrictions target calculators with Computer Algebra Systems (CAS), QWERTY keyboards, or wireless communication capabilities. For the digital ACT, an on-screen calculator (Desmos) is provided, but you can still bring your own handheld device. Check out our SAT Score Calculator for more test prep resources.
Common Misconceptions
A common myth is that you need the most expensive graphing calculator. In reality, a mid-range scientific calculator that you are comfortable with is often more effective. Another misconception is that all graphing calculators are banned. This is untrue; only specific models with prohibited features (like CAS) are disallowed. For instance, the TI-Nspire is permitted, but the TI-Nspire CAS is not. This guide on what calculator you can use on the act aims to clarify these points.
Understanding the ACT’s Rules: A Breakdown
The ACT’s calculator rules are not arbitrary. They are based on preventing access to functions that solve complex algebraic equations automatically or allow for communication. The policy for determining what calculator you can use on the act focuses on a few key technological features.
| Feature / Rule | Status | Explanation & Typical Range |
|---|---|---|
| Computer Algebra System (CAS) | Prohibited | Performs symbolic manipulation (e.g., solves for x, simplifies expressions). Found in models like TI-89, HP Prime. |
| Graphing | Permitted | Plots functions and analyzes graphs. Found in models like TI-84 Plus. |
| QWERTY Keyboard | Prohibited | A typewriter-style keyboard. Non-QWERTY letter keys are allowed. |
| Infrared Port | Permitted with Modification | Must be completely covered with opaque tape (e.g., duct tape). |
| Programs/Documents | Permitted with Modification | All programs with CAS functionality and all documents must be removed. |
| Internet/Bluetooth Access | Prohibited | Any device that can communicate wirelessly is banned. This includes phones, tablets, and smartwatches. |
Chart 1: Primary Reasons for Calculator Prohibition on the ACT
Practical Examples (Real-World Use Cases)
Example 1: The Standard Approved Calculator
- Model: Texas Instruments TI-84 Plus CE
- Inputs for Check: User enters “TI-84 Plus CE” into the calculator.
- Output: PERMITTED
- Financial Interpretation (Student Perspective): This calculator is a workhorse for the ACT. It offers powerful graphing capabilities without having a prohibited CAS. It is a safe and highly recommended choice. Investing time to learn its functions via a study planner is wise. Students can confidently purchase and practice with this model, knowing it’s a reliable tool for test day. The question of what calculator you can use on the act is easily answered with this model.
Example 2: The Prohibited High-End Calculator
- Model: Texas Instruments TI-89 Titanium
- Inputs for Check: User enters “TI-89” into the calculator.
- Output: PROHIBITED
- Financial Interpretation (Student Perspective): While the TI-89 is a powerful calculator for advanced college-level math, its built-in Computer Algebra System (CAS) makes it illegal for the ACT. Students who own this should not bring it to the test. They must acquire a different, approved calculator, which could mean an additional expense. It’s crucial to check the policy before test day to avoid this stressful situation. This is a clear case of a calculator you cannot use on the ACT.
How to Use This ACT Calculator Eligibility Calculator
Our tool simplifies the process of figuring out what calculator you can use on the ACT. Follow these simple steps:
- Find Your Model Number: Look at the top of your physical calculator. You will see a model name and number, such as “TI-30XS MultiView” or “HP 35s”.
- Enter the Model: Type the model name into the input field above. Try to be as accurate as possible.
- Check Eligibility: Click the “Check Eligibility” button.
- Read the Results: The tool will instantly display one of three statuses:
- PERMITTED: Your calculator is allowed.
- PROHIBITED: Your calculator is banned and cannot be used.
- PERMITTED WITH MODIFICATION: Your calculator is allowed, but you must make specific changes (like covering an infrared port).
- Review the Details: The results section will also provide a clear reason for the status, helping you understand the specific rule that applies to your device. This is a key part of knowing what calculator you can use on the ACT.
Key Factors That Affect ACT Calculator Eligibility
Several factors determine whether a calculator is approved. Understanding these will help you choose the right tool and avoid surprises. A good GPA calculator can help with college applications, but the right ACT calculator helps you get the score you need first.
1. Computer Algebra System (CAS)
This is the most significant factor. A CAS can solve equations symbolically, which the ACT considers cheating. Calculators like the TI-89, TI-Nspire CAS, and HP Prime are banned for this reason. Always double-check that your model does not have “CAS” in its name.
2. QWERTY Keypads
Calculators with typewriter-style (QWERTY) keyboards are prohibited as they could potentially be used to store notes. This is a strict rule with no exceptions.
3. Communication Capabilities
Any device that can communicate with other devices is banned. This includes calculators with Wi-Fi, Bluetooth, or infrared ports (unless the port is covered). Phones, tablets, and smartwatches are also explicitly forbidden.
4. Power Cords and Noise
Your calculator must be battery-operated. If it has a power cord, it must be removed. If it makes noise, the sound feature must be turned off. The test environment must remain quiet and free of disturbances.
5. Paper Tape
If your calculator has a feature to print to a paper tape, the tape must be removed before you enter the test center.
6. Familiarity and Practice
While not a policy rule, your familiarity with the calculator is a key factor in your success. Don’t buy a powerful new calculator the week before the test. Use a device you have practiced with, as all problems can be solved without one. Knowing what calculator you can use on the act is only half the battle; knowing how to use it is the other half.
Frequently Asked Questions (FAQ)
1. Can I use a TI-84 Plus on the ACT?
Yes, all versions of the Texas Instruments TI-84 Plus, including the Plus C Silver Edition and the CE, are permitted on the ACT. They are one of the most popular choices for students.
2. Is the TI-Nspire allowed on the ACT?
It depends. The standard TI-Nspire (non-CAS) is allowed. However, the TI-Nspire CAS model is explicitly prohibited. You must check your specific model to be sure.
3. What happens if I bring a prohibited calculator?
The testing staff will check calculators. If you are found with a prohibited device, you will not be allowed to use it. In some cases, you may be dismissed from the test and your score voided.
4. Does the ACT provide a calculator?
For paper-based tests, you must bring your own. For computer-based tests, an on-screen calculator (Desmos) is provided, but you are still allowed to bring your own approved handheld calculator.
5. Can I share my calculator with a friend during the test?
No. Sharing calculators during the test is strictly forbidden and can result in dismissal for both students.
6. Are all scientific calculators allowed on the ACT?
Generally, yes. Standard scientific calculators (like the TI-30X series) are almost universally accepted as they do not have the advanced features that are prohibited. They are a safe bet if you are unsure what calculator you can use on the ACT.
7. Do I have to clear the memory on my calculator?
You must remove any programs that have computer algebra system functionality and any stored documents. It is a good practice to clear the memory before the test to be safe. Explore our college cost calculator to plan your finances after the test.
8. What is the best calculator for the ACT?
The “best” calculator is one that is permitted, you are comfortable using, and has all the functions you need (like graphing and scientific functions). For many, the TI-84 Plus series is the ideal balance of power and compliance. However, the most important factor is your own familiarity with the device.