ACT Allowed Calculators Guide

Check Your Calculator’s ACT Approval Status

Enter your calculator’s model to see if it’s permitted on the ACT test. This tool checks against the official ACT calculator policy.

What Are ACT Allowed Calculators?

The term “ACT allowed calculators” refers to the specific set of calculators that students are permitted to use during the mathematics section of the ACT test. The ACT organization maintains a strict policy to ensure fairness and test security. While many calculators are allowed, including most graphing and scientific models, there are critical restrictions against devices with certain functionalities. Understanding this policy is crucial for test day success.

This policy is for any student planning to take the ACT exam. Using a prohibited device can lead to dismissal from the test center and cancellation of your scores. A common misconception is that all graphing calculators are banned, which is untrue. Many popular models, like the TI-84 series, are perfectly acceptable. The main prohibitions target calculators with Computer Algebra Systems (CAS), QWERTY keyboards, or external communication capabilities.

ACT Calculator Policy: Rules and Logic Explained

There isn’t a mathematical formula for determining if a calculator is allowed. Instead, the ACT calculator policy is a set of logical rules. The core principle is that the calculator should be a tool for calculation, not for storing information or solving problems algebraically. Any four-function, scientific, or graphing calculator is generally permitted unless it appears on the specific prohibited list or has a prohibited feature.

The logic can be broken down into these steps:

1. Check for Explicit Prohibition: Is the model number explicitly banned? (e.g., TI-89, TI-92, HP Prime).
2. Check for Prohibited Features: Does it have a QWERTY keyboard, require an electrical outlet, make noise, or have wireless/internet access?
3. Check for CAS: Does it have a Computer Algebra System (CAS)? This is the most common reason for a graphing calculator to be prohibited. CAS can solve algebra problems symbolically, which is not allowed.
4. Check for Required Modifications: Does it have features that need to be disabled or modified, like an infrared port or paper tape?

Feature Status Table

Feature / Category	Status	Details
Computer Algebra System (CAS)	Prohibited	Calculators cannot solve algebraic equations symbolically. (e.g., TI-Nspire CAS is banned, but the non-CAS version is allowed).
QWERTY Keyboard	Prohibited	Any calculator with a typewriter-style letter keypad is not allowed.
Graphing Capability	Allowed	Most graphing calculators are permitted (e.g., TI-83, TI-84).
Scientific & 4-Function	Allowed	All standard scientific and basic calculators are permitted.
Infrared Data Port	Modification Required	Must be completely covered with opaque tape (e.g., duct tape).
External Power Cord	Prohibited	Calculators must be battery-operated.
Cell Phone / Laptop / Tablet	Prohibited	No devices with communication capabilities are allowed.

A summary of key features and their status under the ACT calculator policy.

Practical Examples of ACT Allowed Calculators

Example 1: The Texas Instruments TI-84 Plus CE

• Model: TI-84 Plus CE
• Input: User enters “TI-84 Plus CE” into the checker.
• Analysis: The model does not start with TI-89 or TI-92. It does not have “CAS” in its name. It is a well-known, widely permitted graphing calculator.
• Output: ALLOWED. This is one of the most popular and recommended ACT allowed calculators.

Example 2: The Hewlett-Packard HP Prime

• Model: HP Prime
• Input: User enters “HP Prime” into the checker.
• Analysis: The HP Prime is explicitly listed as a prohibited model on the ACT’s official website because it includes a powerful Computer Algebra System (CAS).
• Output: PROHIBITED. This calculator cannot be used on the ACT under any circumstances.

How to Use This ACT Allowed Calculators Checker

Our ACT calculator checker is designed for simplicity and speed. Follow these steps to verify your device:

1. Enter Your Calculator Model: Type the model of your calculator into the input field. Be as specific as possible (e.g., “TI-Nspire CX II-T” instead of just “TI-Nspire”).
2. Check for Prohibited Features: Answer the simple yes/no question about a QWERTY keyboard.
3. Click “Check Status”: The tool will instantly analyze your input based on the official ACT calculator policy.
4. Review the Results: You will see a clear “Allowed,” “Prohibited,” or “Conditional” status. The results area will also provide a detailed explanation and reference the specific rule that applies to your calculator, guiding your decision on whether you need a different device for the test. Check out our ACT math prep guide for more tips.

Key Factors That Affect Calculator Approval

Several critical factors determine the status of ACT allowed calculators. Missing any of these details could result in an unpleasant surprise on test day.

1. Computer Algebra System (CAS)

This is the most important factor. Calculators with CAS can perform algebraic manipulations (like factoring, solving for variables), which gives an unfair advantage. The ACT requires you to demonstrate these skills yourself. Models with “CAS” in the name are almost always prohibited.

2. QWERTY Keyboards

Calculators with a typewriter-style keyboard are banned. This is to prevent the use of devices that could store notes or have other computer-like functions.

3. Communication Capability

Any device that can communicate wirelessly (Wi-Fi, Bluetooth, infrared) is strictly forbidden. This includes smartwatches, cell phones, and laptops. If your calculator has an infrared port, it must be covered.

4. Power Source

Calculators needing an electrical outlet are not allowed. Your device must be battery-powered. It’s a great idea to bring extra batteries or a backup calculator.

5. Noise and Printing

Devices that make noise or have a paper tape printer must have these features disabled or removed before the test to avoid distracting other students. For more on what to bring, see our ACT test day checklist.

6. Stored Programs and Documents

While you can have programs on your calculator (e.g., for the quadratic formula), programs that have CAS functionality must be removed. All documents and notes must be deleted from the calculator’s memory before the test.

Frequently Asked Questions (FAQ) about ACT Allowed Calculators

1. Can I use a TI-84 Plus on the ACT?

Yes, all versions of the TI-84 Plus (including the Plus CE) are perfectly fine and are among the most popular ACT allowed calculators.

2. Is the TI-Nspire allowed on the ACT?

It depends. The standard TI-Nspire (non-CAS) is allowed. However, the TI-Nspire CAS is explicitly prohibited. You must check your model carefully.

3. What happens if I bring a prohibited calculator?

Testing staff may confiscate the calculator, and you could be dismissed from the test, having your score voided. It is your responsibility to ensure you have one of the ACT allowed calculators.

4. Do I need a graphing calculator for the ACT?

No, it is not required. Every problem on the ACT Math test can be solved without a calculator. However, a familiar graphing or scientific calculator can be a powerful tool to save time and verify answers. Explore our online ACT courses to learn how to best use your calculator.

5. Can I share my calculator with a friend during the test?

No. Sharing calculators is strictly forbidden during the exam.

6. What’s the difference between a CAS and a non-CAS calculator?

A non-CAS calculator gives numerical answers (e.g., x = 2.5). A CAS calculator can give symbolic answers (e.g., x = 5/2) and perform algebraic operations like factoring ‘x^2-4’ into ‘(x-2)(x+2)’. This is why CAS is banned. Learn more with our ACT vs SAT comparison guide.

7. Are there any restrictions on programs for ACT allowed calculators?

Yes, you are not allowed to have programs that have computer algebra system functionality. Single-purpose programs (like a quadratic equation solver) are generally permitted.

8. Can I use the calculator on my phone?

Absolutely not. Cell phones, tablets, smartwatches, and laptops are prohibited from use during the test. Your calculator must be a separate, dedicated device.