Act Calculators Allowed

An essential tool to check if your calculator is permitted for the ACT test.

What is the ACT Calculator Policy?

The ACT has a strict policy on which calculators are allowed during the math portion of the test. This policy ensures fairness and prevents any student from having an unfair advantage through the use of unapproved technology. While all math problems on the ACT can be solved without a calculator, using a familiar and permitted calculator can help you save time and reduce errors. This tool helps you determine if your device is one of the ACT calculators allowed, so you can avoid any surprises on test day. Generally, any 4-function, scientific, or graphing calculator is acceptable as long as it’s not on the prohibited list.

The “Formula” for an Allowed Calculator

There isn’t a single mathematical formula, but rather a set of rules or a logical checklist that determines if a calculator is permitted. The core principle is that the device must not provide an unfair advantage. Think of the “formula” as a series of logical checks:

• Is it on the Prohibited List? The ACT explicitly bans certain models, especially those with Computer Algebra Systems (CAS).
• Does it have a QWERTY keyboard? Calculators with typewriter-like keyboards are not allowed.
• Can it communicate wirelessly or connect to the internet? Devices with infrared ports or any communication capability are banned.
• Does it require an electrical outlet? Calculators that need to be plugged in are not permitted.

If a calculator passes all these checks, it is generally considered one of the ACT calculators allowed.

Key Factors in ACT Calculator Policy

Variable / Feature	Meaning	Unit / Type	Status
CAS Functionality	Computer Algebra System (solves algebraic equations)	Software Feature	Prohibited
QWERTY Keyboard	A standard typewriter-style lettered keyboard	Hardware Feature	Prohibited
Graphing Capability	Ability to plot function graphs	Software Feature	Permitted
Scientific Functions	Performs trigonometric, log, and exponential functions	Software Feature	Permitted
Infrared Port	Allows for wireless data transfer	Hardware Feature	Prohibited (unless covered)

Practical Examples

Example 1: A Permitted Calculator

• Input: TI-84 Plus
• Logic: This model is a standard graphing calculator. It is not on the prohibited list, does not have CAS, and has no QWERTY keyboard.
• Result: Allowed. This is a classic example of one of the most common ACT calculators allowed.

Example 2: A Prohibited Calculator

• Input: TI-89 Titanium
• Logic: This model is explicitly listed as prohibited because it contains a Computer Algebra System (CAS).
• Result: Prohibited. Calculators with CAS functionality are not allowed on the ACT.

How to Use This ACT Calculators Allowed Checker

Using this tool is straightforward. Follow these steps to ensure you’re ready for test day:

1. Find Your Calculator’s Model: Look on the face, back, or inside cover of your calculator for the specific model number (e.g., “TI-30XS”, “Casio fx-9750GII”).
2. Enter the Model: Type the full model name into the input field at the top of this page.
3. Check the Result: The tool will instantly provide a status: “Allowed,” “Prohibited,” or “Check Manually.”
   • Allowed: You’re good to go!
   • Prohibited: You must find a different calculator for the test.
   • Check Manually: The model isn’t in our database, but it might still be allowed. Review the detailed rules below to be sure.
4. Read the Details: The results area will provide a brief explanation for the status, which is especially helpful for prohibited models.

Key Factors That Affect Calculator Eligibility

Understanding why certain calculators are accepted or rejected is key. Here are the primary factors the ACT considers:

• Computer Algebra System (CAS): This is the most common reason for a calculator being banned. CAS can perform symbolic algebra, like factoring or solving equations, which is a skill being tested. Models like the TI-89, TI-92, and TI-Nspire CAS are prohibited for this reason.
• QWERTY Keyboards: Any device with a lettered keyboard in the standard typewriter (QWERTY) layout is forbidden.
• Communication Features: Calculators cannot have any way to communicate with other devices. This includes infrared ports, Bluetooth, and Wi-Fi. If a calculator has an IR port, it must be completely covered with opaque tape.
• Need for External Power: A calculator must be battery-operated. Models that require being plugged into an electrical outlet are not allowed.
• Noise and Tapes: If your calculator makes noise, the sound must be turned off. If it uses a paper tape, the tape must be removed before the test.
• Non-Calculator Devices: You cannot use a calculator app on a cell phone, tablet, or laptop. The device must be a dedicated, standalone calculator.

Frequently Asked Questions (FAQ)

1. Can I use a graphing calculator on the ACT?

Yes, most graphing calculators are allowed, including popular models like the TI-83, TI-84 Plus, and the non-CAS version of the TI-Nspire. The key is ensuring they do not have prohibited features like a CAS.

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

Testing staff will not permit you to use it. If you are caught using a prohibited device during the test, you could be dismissed, and your test scores may be invalidated.

3. Are all scientific calculators allowed on the ACT?

Yes, generally all scientific calculators are permitted. They provide necessary functions for trigonometry and logarithms without the advanced symbolic manipulation of CAS calculators.

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

The ACT requires that you remove any programs or documents that have computer algebra system functionality. It is best practice to clear any non-essential programs and data before the test.

5. What is a Computer Algebra System (CAS)?

A CAS is a sophisticated program that can manipulate mathematical expressions in a symbolic way, much like a human would. For example, it can solve for x in `3x + 9 = 21` or factor the expression `x^2 – 4`. This functionality is not allowed on the ACT.

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

It depends on the model. The standard TI-Nspire CX and CX II are allowed. However, the TI-Nspire CAS is explicitly prohibited. You must check your device carefully.

7. What if my calculator model is not found by this checker?

If our tool doesn’t recognize your model, it doesn’t automatically mean it’s banned. It may be a less common model. You should carefully review the official ACT calculator policy and the list of prohibited features mentioned on this page to make a final determination.

8. Can I share my calculator with another student?

No. Sharing calculators during the test is strictly prohibited. You should bring your own, along with a backup if you are concerned about battery failure.