Can You Use a Calculator in ACT? Policy Checker & Guide

Answering the critical question: is your calculator permitted on the ACT test? Use our simple tool to check your device against the official policy.

ACT Calculator Policy Checker

Answer the following questions about your calculator to see if it complies with the current ACT calculator policy.

What is the ACT Calculator Policy?

The ACT has a straightforward but strict calculator policy designed to ensure fairness and test security. While you can solve all math problems without a calculator, using a familiar, permitted device can save time and help you avoid simple errors. You are allowed to use a calculator only on the Mathematics section of the test. Generally, any 4-function, scientific, or graphing calculator is acceptable as long as it isn’t on the official prohibited list.

The main goal of the policy is to ban devices that can give a test-taker an unfair advantage, such as those with a Computer Algebra System (CAS), internet access, or communication capabilities. It is your responsibility to bring a working, permitted calculator with fresh batteries. For more great insights, read about some ACT math practice tests.

Prohibited Features Explained (The “Formula”)

Our checker’s logic is based on the features the ACT explicitly prohibits. Think of these as the variables in the “formula” for permissibility. If your calculator has any one of these forbidden characteristics, it is not allowed.

This table outlines the key prohibited features and why they are banned.

Variable (Feature)	Meaning	Reason for Prohibition	Typical Range (Example Models)
Computer Algebra System (CAS)	The ability to symbolically solve equations, factor, and expand expressions.	It automates the algebra skills the test is designed to measure.	TI-89, TI-Nspire CAS, HP Prime.
QWERTY Keyboard	A lettered keyboard in the standard typewriter layout.	These devices are considered computers and are not allowed.	TI-92, some older Casio models.
Wireless Communication	Any form of wireless data transfer like Wi-Fi, Bluetooth, or cellular.	Prevents cheating and communication during the exam.	Cell phones, smartwatches, tablets.
External Power	Requires an electrical cord to operate.	Test centers do not provide power outlets for calculators.	N/A (Calculators must be battery-powered)

Practical Examples

Example 1: The Permitted Calculator (TI-84 Plus)

A student brings a Texas Instruments TI-84 Plus.

• Inputs: The student checks “No” for all prohibited features. It does not have CAS, a QWERTY keyboard, or wireless capabilities.
• Result: The calculator is PERMITTED. It is one of the most common and recommended calculators for the ACT.

Example 2: The Prohibited Calculator (TI-89 Titanium)

Another student has a Texas Instruments TI-89 Titanium.

• Inputs: The student must check “Yes” for “Does it have a Computer Algebra System (CAS)?”.
• Result: The calculator is PROHIBITED. The TI-89 series is explicitly banned because of its powerful CAS functionality. Understanding this can be a key part of choosing between the SAT vs ACT comparison.

How to Use This ACT Calculator Policy Checker

Using this tool is simple and gives you an immediate answer based on the official rules.

1. Review Your Calculator: Examine your calculator’s features. Look for labels like “CAS,” check the keyboard layout, and determine if it has any communication functions.
2. Answer the Questions: For each question in the checker, mark the checkbox if your calculator has that specific feature. Be honest for an accurate result.
3. Check Permissibility: Click the “Check Permissibility” button.
4. Interpret the Results: The tool will display a clear “PERMITTED” or “PROHIBITED” message. If prohibited, it will explain which rule was violated. The chart provides a quick visual summary of your result. A good score often requires good tools, so learn about how to improve your ACT score.

Key Factors That Affect Permissibility

• Computer Algebra System (CAS): This is the most common reason a powerful graphing calculator is banned. Calculators like the TI-Nspire CAS are prohibited, but the non-CAS version is allowed.
• Communication Devices: Any device that can communicate is strictly forbidden. This means your phone, smartwatch, or tablet cannot be used as a calculator.
• Keyboard Style: Calculators with a QWERTY keyboard are banned.
• Modifications Required: Some older calculators with infrared data ports (like the HP 38G series) are only allowed if the port is completely covered with opaque tape.
• Noise and Printing: Calculators that make noise must be muted, and those with paper tape must have the tape removed before the test.
• Power Source: Your calculator must be battery-operated. Devices needing a power cord are not allowed. Knowing the best graphing calculators for college can help you invest wisely.

Frequently Asked Questions (FAQ)

1. Can I use a calculator on all sections of the ACT?

No, calculators are only permitted on the Mathematics test. You cannot use them on the English, Reading, or Science sections.

2. What happens if I bring a prohibited calculator?

The testing staff will not allow you to use it. You may be dismissed from the test, and your score could be voided.

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

It depends. The TI-Nspire (non-CAS) model is permitted, but the TI-Nspire CAS model is strictly prohibited. Always check for the “CAS” label on your device.

4. Does the ACT provide calculators?

No, you are responsible for bringing your own permitted calculator. Testing centers do not provide them.

5. What should I do if my calculator’s batteries die?

You should bring a backup calculator or at least a spare set of batteries. The test proctors will not supply them.

6. Can I share my calculator with another student?

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

7. Are there any exceptions for calculators with prohibited features?

Some modifications are allowed. For example, you must remove paper from a printing calculator or cover an infrared port with opaque tape. However, features like CAS cannot be “modified” and remain prohibited.

8. Where can I find the official ACT calculator policy?

The most current policy is always available on the official ACT website. Our checker is based on this policy, but it’s always wise to double-check the official source before test day. It’s also helpful to be aware of all ACT test dates well in advance.