ACT Calculator Eligibility Checker
Find out what type of calculator you can use on the ACT before test day.
Is Your Calculator Allowed?
Answer the following questions about your calculator to determine if it meets the official ACT calculator policy. This tool helps you figure out what type of calculator can you use on the ACT.
What is the ACT Calculator Policy?
The ACT calculator policy defines the rules for which calculators are permitted and prohibited during the ACT test. Its purpose is to ensure fairness for all test-takers by preventing anyone from gaining an unfair advantage through advanced computational tools. While all ACT math problems can be solved without a calculator, using a familiar and approved device is a key strategy for managing time effectively. Understanding what type of calculator you can use on the ACT is a critical part of test preparation. Failing to follow the policy can result in being dismissed from the test.
In general, the ACT permits any 4-function, scientific, or graphing calculator, provided it is not on the prohibited list. The most significant restriction is on calculators with a Computer Algebra System (CAS). CAS functionality allows a device to solve algebraic equations symbolically, which goes against the test’s goal of assessing your mathematical reasoning skills. Other prohibited features include QWERTY keyboards, wireless communication capabilities, and the need for an external power source.
The Rule-Based Logic for ACT Calculator Approval
Determining what type of calculator can you use on the ACT isn’t based on a mathematical formula, but a set of logical rules. The “calculation” is a checklist of features. If your device has any single prohibited feature, it is not allowed. Some features may require modification for the calculator to be permitted. Our checker automates this logical process.
| Feature (Variable) | Meaning | Typical Status | Reasoning |
|---|---|---|---|
| Computer Algebra System (CAS) | Ability to solve/simplify algebraic expressions symbolically. | Prohibited | Automates algebra that the test is designed to measure. |
| QWERTY Keyboard | A typewriter-style keyboard. | Prohibited | Could be used to store notes or for communication. |
| Phone/Tablet/Laptop | Any general-purpose computing device. | Prohibited | Access to internet, apps, and communication is not allowed. |
| External Power Requirement | Needs to be plugged into an outlet to function. | Prohibited | Testing centers are not equipped to provide power to all students. |
| Programmable Functions | Ability to store programs or documents. | Permitted with Conditions | Allowed, but must be cleared of all programs containing CAS functionality and any stored documents before the test. |
Practical Examples of the ACT Calculator Policy
Example 1: The Standard Graphing Calculator (TI-84 Plus)
A student wants to know if their Texas Instruments TI-84 Plus is an approved ACT math calculator. They use the checker:
- Has CAS? No.
- Has QWERTY? No.
- Is it a device? No.
- Needs Power Cord? No.
- Is it Programmable? Yes.
Result: Permitted (with conditions). The checker would indicate the calculator is allowed but advise the student to ensure no prohibited programs (like those with CAS features) or documents are stored on it. This is a classic example of what type of calculator you can use on the ACT. For more information on test strategies, see our guide on ACT Math Strategies.
Example 2: The Prohibited CAS Calculator (TI-89)
Another student has a Texas Instruments TI-89 Titanium and wants to check its eligibility.
- Has CAS? Yes.
Result: Prohibited. The moment the student selects “Yes” for the CAS feature, the tool immediately identifies the calculator as prohibited. The TI-89 series is explicitly banned by the ACT calculator policy because its powerful symbolic algebra engine provides an unfair advantage. This highlights the most important rule when deciding what type of calculator can you use on the ACT.
How to Use This ACT Calculator Eligibility Checker
Using this tool is straightforward and provides instant clarity on the often-confusing ACT calculator policy. Follow these steps to determine if your device is test-day ready.
- Answer the Questions: Go through each dropdown menu and select ‘Yes’ or ‘No’ based on the features of your specific calculator model.
- Review the Primary Result: The large box at the bottom will instantly update with one of three statuses: “Permitted,” “Prohibited,” or “Permitted with Conditions.”
- Check the Intermediate Results: Below the main status, a breakdown shows which specific rules your calculator passed or failed. This helps you understand *why* a decision was made.
- Analyze the Chart: The dynamic bar chart provides a visual representation of compliance, showing the balance of permitted versus prohibited features.
- Reset if Needed: Use the ‘Reset’ button to clear the form and start over with a different calculator model. This is helpful if you are comparing two different calculators.
By using this checker, you can confidently know what type of calculator can you use on the ACT and avoid any surprises on test day. If you’re deciding between tests, you might also want to review our SAT vs. ACT Guide.
Key Factors That Affect ACT Calculator Approval
Several factors determine what type of calculator can you use on the ACT. Understanding these will help you choose the right tool.
- Computer Algebra System (CAS): This is the most critical factor. Calculators with CAS, like the TI-Nspire CAS or HP Prime, are strictly forbidden because they can perform symbolic manipulation, undermining the test’s purpose.
- QWERTY Keyboards: Any calculator with a typewriter-style keyboard is banned. This rule prevents the use of devices that could store text notes or facilitate communication.
- Communication Capabilities: Devices with infrared, Bluetooth, or Wi-Fi are not allowed. This is to maintain test security and prevent cheating. Some older models with infrared ports may be used if the port is completely covered with opaque tape.
- Device Type: The policy explicitly prohibits using calculator apps on phones, tablets, smartwatches, or laptops. You must bring a standalone, handheld calculator.
- Noise and Power: Your calculator must not make any noise. If it has a sound feature, it must be turned off. It also cannot require an external power cord to operate.
- Prohibited Models List: The ACT maintains a specific list of banned models. This includes the TI-89 and TI-92 series, and many Casio and HP models with advanced features. Always check the official list if you are unsure. Knowing about free ACT practice tests can help you prepare.
Frequently Asked Questions (FAQ)
Yes, the TI-84 Plus (including the CE version) is one of the most popular and recommended calculators for the ACT. It is a powerful graphing calculator without a CAS, making it fully compliant with the ACT calculator policy. However, you should clear any stored programs or documents before the test.
It depends on the model. The standard TI-Nspire (non-CAS) is permitted. The TI-Nspire CAS is strictly prohibited. You must be certain about which version you have when determining what type of calculator can you use on the ACT.
ACT policy states that you may have to clear the memory of programmable calculators. While games themselves are not explicitly banned, a proctor may ask you to clear your calculator’s memory to ensure no prohibited programs (like those with CAS functionality) are present. It’s safest to remove all non-essential programs before the test.
No. A scientific calculator is sufficient for all math on the ACT. Many students prefer a graphing calculator for its ability to visualize functions, but it is not a requirement. Even a simple 4-function calculator is allowed, though not recommended. Using a calculator you’re familiar with is more important than its advanced features.
No, you are responsible for bringing your own approved calculator. It is also wise to bring a backup calculator or at least extra batteries, just in case.
The policies are very similar. Both prohibit calculators with CAS functionality. A key difference is that the digital SAT includes an embedded Desmos graphing calculator that students can use, while the ACT has historically required students to bring their own for all test formats, though an on-screen calculator may be available for computer-based testing. Considering professional college admissions consulting can help navigate these differences.
No. Sharing calculators during the test is strictly prohibited and can lead to dismissal.
If you’re unsure, it’s best to be cautious. The core rules of the ACT calculator policy (no CAS, no QWERTY, etc.) are the best guide. If your calculator has a questionable feature, it’s safer to bring a different, clearly permitted calculator. When in doubt, a standard scientific calculator like a TI-30X is always a safe bet.