calculators that can be used on the act

Unsure if your calculator is approved for the big test? This tool helps you quickly check the rules for calculators that can be used on the act. Enter your calculator’s model name below to see if it’s likely permitted or prohibited based on the latest ACT calculator policy.

ACT Calculator Permissibility Checker

Input Model:

Key Prohibited Feature Check:

Official Policy Reference: ACT Official Policy

What is the ACT Calculator Policy?

The ACT calculator policy outlines which calculators that can be used on the act and which are forbidden. The policy is designed to ensure fairness and test security for all students. While you can solve all math problems on the ACT without a calculator, using a familiar and permitted device is highly encouraged. The main rule is that any four-function, scientific, or graphing calculator is allowed as long as it is not on the prohibited list. A common misconception is that all graphing calculators are banned, which is untrue; only specific models and those with certain features like a Computer Algebra System (CAS) are prohibited.

ACT Calculator Rules: The “Formula” Explained

There isn’t a mathematical formula for checking calculators that can be used on the act, but rather a set of clear rules. The permissibility of a calculator is determined by its features. The ACT explicitly prohibits calculators with functionalities that could provide an unfair advantage. Understanding these rules is crucial.

Key Features Determining Calculator Permissibility

Feature/Rule	Meaning	Permissibility	Typical Range/Examples
Computer Algebra System (CAS)	Can simplify or solve algebraic expressions symbolically.	Prohibited	TI-89, TI-Nspire CAS, HP Prime
QWERTY Keyboard	A computer-style keyboard.	Prohibited	TI-92
Wireless/Bluetooth	Can communicate with other devices.	Prohibited	Any device with Wi-Fi or Bluetooth
Needs Electrical Outlet	Requires external power to function.	Prohibited	Calculators with power cords
Standard Graphing	Can plot graphs from equations.	Permitted	TI-83, TI-84 Plus, Casio fx-9750GII
Scientific Functions	Performs logarithmic, trig, and exponential functions.	Permitted	TI-30X, Casio fx-115ES

Practical Examples of a calculators that can be used on the act

Let’s look at two real-world scenarios to understand the policy for calculators that can be used on the act.

Example 1: The Standard Graphing Calculator

• Calculator Model: Texas Instruments TI-84 Plus
• Analysis: The TI-84 Plus is a graphing calculator but does NOT have a built-in Computer Algebra System (CAS). It is not on the official prohibited list.
• Result: Allowed. This is one of the most common calculators that can be used on the act.

Example 2: The Advanced CAS Calculator

• Calculator Model: Texas Instruments TI-89 Titanium
• Analysis: The TI-89 model is explicitly on the ACT’s list of prohibited calculators because it contains a powerful Computer Algebra System (CAS).
• Result: Not Allowed. This calculator provides an unfair advantage by solving algebraic equations automatically, which is against the rules for calculators that can be used on the act.

How to Use This Calculator Checker

Using this tool to check for calculators that can be used on the act is straightforward:

1. Enter the Model: Type the full model name of your calculator (e.g., “TI-Nspire CX”) into the input field.
2. Check Status: Click the “Check Permissibility” button.
3. Review the Result: The tool will display one of three statuses:
   • Allowed: The model is not on the prohibited list and does not appear to have banned features.
   • Not Allowed: The model is on the ACT’s official prohibited list.
   • Check Manually: The model contains terms associated with both allowed and disallowed calculators (like TI-Nspire vs TI-Nspire CAS). You must verify which version you have. The non-CAS version is permitted.
4. Decision-Making: Always treat the official ACT policy as the final authority. This tool is an aid, not a guarantee.

Key Factors That Affect Permissibility

Several factors determine whether a device is among the calculators that can be used on the act. Understanding these will help you choose the right tool.

• Computer Algebra System (CAS): This is the most common reason for a calculator to be banned. A CAS can manipulate and solve variables, effectively doing the algebra for you. The ACT wants to test *your* algebra skills, not your calculator’s.
• QWERTY Keypad: Calculators with a typewriter-style (QWERTY) keyboard are prohibited as they resemble a computer and can make text entry easier.
• Communication Ability: Any device with Wi-Fi, Bluetooth, or an infrared port that isn’t covered is banned to prevent cheating.
• Power Source: Calculators that need to be plugged into an electrical outlet are not allowed. Your calculator must be battery-operated.
• Noise and Printing: Calculators that make noise must be muted, and those with a paper tape must have the tape removed. This is to prevent disruption in the testing room.
• Device Type: You cannot use a phone, tablet, smartwatch, or laptop as a calculator. This is a strict rule regarding the types of calculators that can be used on the act.

Frequently Asked Questions (FAQ)

1. Can I use a TI-89 calculator on the ACT?

No. All calculators with model numbers that begin with TI-89 or TI-92 are explicitly prohibited because they have Computer Algebra System (CAS) functionality. This is a critical rule for calculators that can be used on the act.

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

It depends. The standard TI-Nspire (non-CAS) is permitted. However, the TI-Nspire CAS is strictly prohibited. You must check your specific model.

3. What happens if I bring a banned calculator?

If you are caught using a prohibited calculator, you may be dismissed from the test, and your score will be voided. It is your responsibility to know the policy for calculators that can be used on the act.

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

The ACT requires that you remove any programs or documents that have CAS functionality. While proctors may not check every calculator, it’s best to clear any non-essential programs to be safe.

5. Is a basic four-function calculator okay?

Yes. Any four-function calculator is permitted and is sufficient to solve the problems, though a scientific or graphing calculator may be more helpful. It falls under the category of calculators that can be used on the act.

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

No. Sharing calculators during the test is not permitted under any circumstances.

7. What about the digital ACT?

For the digital ACT, a graphing calculator (Desmos) is built into the testing platform. However, you are still allowed to bring your own approved handheld calculator if you prefer.

8. My calculator has an infrared port. Is it allowed?

Calculators with an infrared data port (like some older HP models) are only allowed if you completely cover the port with opaque material like duct tape. This modification is required for it to be considered one of the calculators that can be used on the act.