Act Approved Calculator

Enter your calculator’s details to check if it’s likely permitted on the ACT exam. This tool is based on the official ACT calculator policy but always double-check with the official ACT website for the latest rules.

ACT Calculator Policy Summary

Feature Type	Status on ACT Exam	Examples
Basic, Scientific, Graphing	Allowed	TI-84 Plus, Casio fx-9750GII, standard 4-function
Computer Algebra System (CAS)	Prohibited	TI-89, TI-Nspire CAS, HP Prime
QWERTY Keyboard	Prohibited	Any calculator with a typewriter-style keyboard
Wireless/Internet	Prohibited	Calculators on phones, tablets, or laptops
Noisy or Paper Tape	Modification Required	Must turn off sound or remove paper tape

A summary of calculator types and whether they are allowed on the ACT.

Understanding the ACT Approved Calculator Policy

What is an ACT Approved Calculator?

An “ACT Approved Calculator” is any calculator that meets the specific requirements set by the ACT organization for use during the mathematics portion of the test. The policy exists to ensure fairness for all test-takers and prevent any student from having an unfair advantage through technology. While most scientific and graphing calculators are permitted, certain models and features are explicitly banned. This ACT approved calculator tool helps you quickly identify if your device falls into the allowed category. It’s crucial for students to verify their calculator’s compliance before test day to avoid having it confiscated.

This policy applies to everyone taking the ACT, and understanding it is part of being prepared. The rules primarily target devices with advanced communication features or those that can store complex text and formulas, such as those with a Computer Algebra System (CAS). Our ACT approved calculator checker is your first line of defense in making sure you are ready for test day.

ACT Approved Calculator Formula and Mathematical Explanation

The “formula” for determining if a calculator is an ACT approved calculator is not mathematical but a series of logical checks based on the official policy. The core principle is to exclude devices that can perform symbolic algebra, communicate wirelessly, or function like a computer. This calculator automates that logic.

The decision process is as follows:

1. Check for Explicitly Prohibited Models: The calculator checks the model name against a known list of banned calculators (e.g., TI-89, HP Prime).
2. Check for Prohibited Hardware Features: It then checks for features you’ve selected, like a QWERTY keyboard or wireless capability.
3. Check for Modifiable Issues: Some calculators with features like noise or paper tape are allowed if modified. Our tool notes these as warnings.
4. Determine Final Status: If no prohibited models or features are found, the calculator is deemed “Likely Approved.”

Variables Table

Variable / Feature	Meaning	Status	Typical Range
Model Name	The specific model of the calculator.	Allowed or Prohibited	e.g., TI-84, TI-89, HP 50g
CAS	Computer Algebra System functionality.	Prohibited	Present / Not Present
QWERTY Keyboard	A typewriter-style keyboard.	Prohibited	Present / Not Present
Wireless Capability	Bluetooth, Wi-Fi, or other communication.	Prohibited	Present / Not Present
Familiarity	How well the user knows the calculator. For more, see our ACT math tips.	User Dependent	Beginner to Expert

Practical Examples (Real-World Use Cases)

Example 1: Checking a Common Graphing Calculator

• Input: Model Name = “TI-84 Plus CE”
• Feature Checks: All boxes are unchecked.
• Logic: The model is not on the prohibited list. It does not have a QWERTY keyboard, stylus, or wireless features.
• Output Status: APPROVED
• Interpretation: The Texas Instruments TI-84 Plus CE is a standard ACT approved calculator and is perfectly acceptable for the test.

Example 2: Checking a Prohibited Calculator

• Input: Model Name = “TI-89 Titanium”
• Feature Checks: All boxes are unchecked.
• Logic: The model name “TI-89” is on the explicitly prohibited list because it contains a Computer Algebra System (CAS). The ACT approved calculator tool immediately flags it.
• Output Status: PROHIBITED
• Interpretation: The TI-89 is not allowed on the ACT under any circumstances due to its CAS capabilities. You would need to bring a different calculator.

How to Use This ACT Approved Calculator

Using this tool is a simple, three-step process to ensure you’re prepared for test day. Following these steps can prevent last-minute surprises. A proper check is a key part of your ACT test day checklist.

Step	Action	Details
1	Enter Model Name	Type the model name exactly as it appears on your calculator. This is the most important factor for the ACT approved calculator check.
2	Check for Features	Review the checklist of prohibited features. If your calculator has any of them (like a QWERTY keyboard), check the corresponding box.
3	Review the Results	The tool will instantly provide a status: Approved, Prohibited, or Warning. Read the “Basis for Status” and “Required Action” for a full explanation.

Key Factors That Affect ACT Approved Calculator Status

Several key factors determine whether a calculator is considered an ACT approved calculator. Understanding these will help you choose the right tool for the exam.

• Computer Algebra System (CAS): This is the most significant factor. Calculators with CAS, which can solve algebra equations symbolically, are strictly forbidden.
• QWERTY Keyboards: Any calculator with a keyboard laid out like a computer (QWERTY) is prohibited. This prevents students from typing and storing notes.
• Communication Technology: Devices with infrared, Bluetooth, or Wi-Fi capabilities are banned to prevent cheating.
• Stylus or Pen-Input: Calculators that use a stylus are generally prohibited as they are considered pen-input devices or small computers.
• Official Prohibited List: The ACT explicitly lists certain models as banned. Our ACT approved calculator uses this list for its primary check. Models like the TI-89, TI-92, and many HP Prime and Casio ClassPad models are on it.
• Power Cords: A calculator must be able to operate on its own batteries. You cannot have it plugged into an outlet during the test. For more on test prep, see our ACT prep courses.

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 CE and Python editions, are permitted and are a great choice. They are a popular and effective ACT approved calculator.

2. What happens if I bring a prohibited calculator to the test?

The test proctor will not allow you to use it. You will either have to take the math test without a calculator or, in some cases, you may be dismissed from the test.

3. Are graphing calculators allowed on the ACT?

Yes, graphing calculators are allowed as long as they are not on the prohibited list and do not have a CAS. Using one can be beneficial for certain problems, but check the ACT calculator rules first.

4. Is the TI-Nspire allowed?

It depends. The TI-Nspire CX (non-CAS version) is allowed. However, the TI-Nspire CAS is strictly prohibited. You must ensure you have the non-CAS model.

5. Do I need to clear my calculator’s memory?

While the ACT policy focuses on prohibiting programs with CAS functionality, it’s a good practice to clear any non-essential programs or data. Proctors may inspect your calculator’s memory.

6. Can I use the calculator on the ACT Science section?

No, calculators are only permitted on the Mathematics test. They are not allowed on the Science, Reading, or English sections.

7. What if my calculator makes noise?

You must turn the sound off before the test begins. A noisy calculator can cause a disturbance and is not allowed.

8. Should I bring a backup calculator?

Yes, the ACT organization recommends bringing a backup calculator that you are familiar with in case your primary one fails. This ensures you always have an ACT approved calculator ready.