Act Permitted Calculators

Determine if your device is one of the ACT permitted calculators with our expert tool. This guide covers the official policy to ensure you’re prepared for test day.

Is Your Calculator ACT-Approved?

Prohibited Feature Risk Analysis

What are ACT Permitted Calculators?

ACT permitted calculators are devices that meet the specific rules and regulations set by the ACT for use during the mathematics portion of the test. While all math problems on the ACT can be solved without a calculator, using one is highly encouraged to save time and handle complex calculations efficiently. The policy is designed to ensure fairness and test security. Generally, any 4-function, scientific, or graphing calculator is allowed as long as it does not have features that are on the ACT’s prohibited list. Understanding which devices qualify as ACT permitted calculators is a critical part of test preparation.

A common misconception is that all graphing calculators are allowed. This is false. High-end graphing calculators with a built-in Computer Algebra System (CAS) are strictly forbidden. Students must verify their device is not on the prohibited list to avoid having it confiscated on test day. The goal of the ACT permitted calculators policy is to allow a helpful tool, not a device that solves problems for the test-taker.

ACT Permitted Calculators: Rules and Guidelines

Instead of a single mathematical formula, the policy for ACT permitted calculators is a set of rules and restrictions. The core principle is that the calculator should be a tool for computation, not for symbolic manipulation or communication. We can break down the evaluation into a checklist.

The step-by-step process to determine if you have one of the ACT permitted calculators involves checking for specific hardware and software features. Any feature that allows for algebraic manipulation (like solving for x), wireless communication, or has a computer-style keyboard is grounds for disqualification.

Prohibited Features Checklist

Feature/Rule	Meaning	Status if Present	Typical Models Affected
Computer Algebra System (CAS)	System that can solve algebraic equations symbolically.	Prohibited	TI-89, TI-Nspire CAS, HP Prime
QWERTY Keyboard	A typewriter-style keyboard.	Prohibited	Older models with keyboard attachments
Stylus/Pen Input	Device requires a pen or stylus to operate.	Prohibited	Casio ClassPad series
Wireless/Internet	Any form of communication (Bluetooth, Wi-Fi, cellular).	Prohibited	Phones, tablets, smartwatches
Power Cord	Must be operable without being plugged into a wall.	Prohibited	Printing calculators or very old models

Practical Examples of ACT Permitted Calculators

Example 1: A Permitted Calculator

• Model: Texas Instruments TI-84 Plus CE
• Features: Graphing capability, no CAS, no QWERTY keyboard, no wireless.
• Analysis: This model is one of the most common and recommended ACT permitted calculators. It has powerful graphing features but does not have a CAS. It fully complies with the ACT policy.
• Result: PERMITTED

Example 2: A Prohibited Calculator

• Model: Texas Instruments TI-89 Titanium
• Features: Graphing capability, built-in Computer Algebra System (CAS).
• Analysis: Although it is a graphing calculator, the TI-89 is explicitly banned because its CAS can perform symbolic algebra, which gives an unfair advantage. This is a classic case where a powerful calculator is not one of the ACT permitted calculators.
• Result: NOT PERMITTED

How to Use This ACT Permitted Calculators Checker

This tool simplifies the process of checking your device against the official ACT policy. Follow these steps to ensure you have one of the valid ACT permitted calculators for your test day.

1. Enter Model Name: Type your calculator’s model name into the first input field. Our logic checks it against a list of specifically banned models like the TI-89, TI-92, and HP 50G.
2. Check for Prohibited Features: Use the checkboxes to indicate if your calculator has any of the listed red-flag features. Does it have a CAS? A QWERTY keyboard? Be honest.
3. Review the Result: The tool will instantly provide a “PERMITTED” or “NOT PERMITTED” status. This primary result is your main takeaway.
4. Read the Reasoning: The “Assessment Details” section explains *why* your calculator was given its status. This helps you understand the specific rule that applies, making you more knowledgeable about the ACT permitted calculators policy.
5. Analyze the Chart: The chart provides a visual breakdown of the risk factors. It helps you see which specific feature is causing a “NOT PERMITTED” result.

Key Factors That Affect ACT Permitted Calculators

Several factors determine if a device is on the approved list of ACT permitted calculators. Navigating these rules is essential for a smooth test-day experience.

• Computer Algebra System (CAS): This is the most common reason for a calculator to be banned. A CAS can solve equations algebraically, find derivatives, and perform other tasks that go beyond numerical calculation. The ACT prohibits any calculator with CAS functionality.
• QWERTY Keypads: Calculators with a typewriter-style (QWERTY) keyboard are not allowed. This is to prevent the use of devices that resemble a computer.
• Communication Capabilities: Any device that can communicate wirelessly (e.g., Bluetooth, infrared, Wi-Fi) is strictly prohibited. This includes phones, tablets, and smartwatches.
• Stylus or Pen-Based Input: Calculators that require a stylus for operation, such as the Casio ClassPad series, are banned.
• External Power Requirement: Your calculator must be battery-operated. Models that require an electrical outlet are not permitted.
• Prohibited List: The ACT maintains a specific list of banned calculators. Even if you think your calculator is fine, you must check it against this list. Checking this list is a vital part of preparing your ACT permitted calculators.

Frequently Asked Questions (FAQ)

1. Can I use the TI-Nspire on the ACT?

It depends. The standard TI-Nspire and TI-Nspire CX models are permitted. However, the TI-Nspire CAS model is explicitly prohibited due to its Computer Algebra System. You must ensure your model does not say “CAS” on it.

2. Is a scientific calculator good enough for the ACT?

Yes, absolutely. All problems on the ACT are solvable without a calculator, so a good scientific calculator (like a TI-30XS) is more than sufficient. For many students, it’s a better choice than an unfamiliar graphing calculator.

3. What happens if I bring a banned calculator?

Testing staff will confiscate the calculator, and you may be dismissed from the test. It is your responsibility to ensure you have one of the ACT permitted calculators.

4. Can I use a calculator app on my phone or watch?

No. Phones, smartwatches, and any other communication devices are strictly forbidden for use as a calculator.

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

The ACT policy states that you must remove any programs that have CAS functionality. While proctors rarely check memory, it is best practice to clear any programs or documents that might violate the policy.

6. Is the TI-84 Plus allowed?

Yes, all versions of the TI-84 Plus (including the Plus, CE, and Silver Edition) are on the list of ACT permitted calculators and are a very popular choice for students.

7. What if my calculator has an infrared port?

For older models with an infrared data port (like some HP calculators), you must cover the port completely with opaque material like duct tape or electrical tape.

8. Can I share my calculator with someone else?

No. Sharing calculators during the test is not permitted under any circumstances. It is recommended to bring a backup calculator in case your primary one fails.