Can You Use a Graphing Calculator on the ACT? – Policy Checker


ACT Calculator Policy Checker

Can you use a graphing calculator on the ACT? Enter your model below to check its compliance with the official ACT calculator policy and ensure you’re ready for test day.

Is Your Calculator ACT-Approved?


Type the full model name of your calculator. The check is based on the official ACT prohibited list.
Please enter a calculator model.


What is the Policy on a Graphing Calculator on the ACT?

The policy regarding whether you can use a graphing calculator on the ACT is designed to ensure fairness and test security. In short, yes, you can use a graphing calculator, but with important restrictions. The ACT allows most graphing calculators as long as they are not on the official prohibited list and do not have certain banned features. The most critical prohibited feature is a Computer Algebra System (CAS). A CAS can solve algebraic equations symbolically, which goes beyond the numerical calculations the ACT intends to test. Therefore, any calculator with CAS functionality is strictly forbidden. Familiarity with your approved calculator is key to using it effectively on the test.

Students should understand that while a graphing calculator on the ACT can be a powerful tool, all math problems on the test can be solved without a calculator. The primary benefit is speed and accuracy on complex arithmetic, function graphing, and matrix operations. Common misconceptions include believing all graphing calculators are banned or that any calculator is allowed. The truth is in the middle: most are permitted, but students are responsible for ensuring their specific model is compliant before test day. Using a non-compliant calculator can lead to dismissal from the test.

Table 1: Examples of Permitted vs. Prohibited Calculators for the ACT
Permitted Models (Generally Allowed) Prohibited Models (Never Allowed)
Texas Instruments TI-84 Plus (all versions) Texas Instruments TI-89 and TI-92 series
Texas Instruments TI-83 Plus Texas Instruments TI-Nspire CAS
Texas Instruments TI-Nspire (non-CAS) HP Prime and HP 50G series
Casio fx-9750GII Casio ClassPad series (fx-CP400)
All scientific calculators (e.g., TI-30XS) Calculators with QWERTY keyboards
All basic 4-function calculators Calculators on phones, tablets, or laptops

The “Formula” Behind the ACT Calculator Policy

There isn’t a mathematical formula for ACT calculator approval, but rather a logical one based on a hierarchy of rules. The ACT’s goal is to prevent devices that give an unfair advantage. Understanding this logic is key for anyone wondering about their graphing calculator on the ACT. The decision process can be broken down into a series of checks against prohibited features.

The core principle is that the calculator should be a tool for computation, not for symbolic algebra or communication. This is why the presence of a Computer Algebra System (CAS) is an automatic disqualifier. For more information on test day rules, see the ACT test day checklist.

Factor (Variable) Meaning Status on ACT Typical Example
CAS Functionality Ability to solve algebra symbolically (e.g., solve x+2=4 for ‘x’). Prohibited TI-89, TI-Nspire CAS
QWERTY Keyboard A typewriter-style keyboard layout. Prohibited Older models with text-input features.
Wireless/IR Port Ability to communicate with other devices. Prohibited (or must be covered) HP 38G, HP 48GII
Graphing Ability Ability to plot functions (e.g., y = x^2). Permitted TI-84 Plus, TI-Nspire (non-CAS)
Scientific Functions Log, sin, cos, tan, exponents. Permitted TI-30XS, Casio fx-115ES
Chart 1: General ACT-Approval Rate by Calculator Type
ACT Approval Rate by Calculator Type A bar chart showing that 4-Function and Scientific calculators are 100% allowed, graphing calculators are mostly allowed (90%), and CAS calculators are 0% allowed. 100% 50% 0% 4-Function: 100% Approved Scientific: 100% Approved Graphing (Non-CAS): ~90% Approved With CAS: 0% Approved 4-Function Scientific Graphing (Non-CAS) With CAS

Practical Examples

Let’s look at two common scenarios students face when deciding on a graphing calculator on the ACT.

Example 1: The Standard Choice

  • Student: Maria
  • Calculator: Texas Instruments TI-84 Plus CE
  • Analysis: Maria enters “TI-84 Plus CE” into the checker. The calculator is not on the prohibited list and does not contain “CAS” in its name. The TI-84 series is one of the most common and widely accepted calculators.
  • Result: Permitted. Maria can confidently bring her calculator to the test.

Example 2: The High-End (and Prohibited) Model

  • Student: David
  • Calculator: HP Prime
  • Analysis: David enters “HP Prime” into the checker. The logic immediately flags this model because the HP Prime is on the ACT’s official list of prohibited calculators due to its built-in Computer Algebra System (CAS).
  • Result: Not Permitted. David must find an alternative calculator, like a TI-84 or a non-CAS TI-Nspire, for the test.

How to Use This ACT Calculator Policy Checker

Using this tool is straightforward and designed to give you a quick, reliable answer about your graphing calculator on the ACT.

  1. Enter Your Calculator Model: Type the model name and number into the input field at the top of the page. Be as specific as possible (e.g., “TI-Nspire CX” vs. “TI-Nspire CX CAS”).
  2. Review the Result: The tool will instantly provide one of three results:
    • Permitted ✅: Your calculator is not on the prohibited list and is very likely allowed.
    • Not Permitted ❌: Your calculator is explicitly banned by the ACT. You cannot use it.
    • Check Guidelines ⚠️: The model was not found, or has a feature that requires checking. This often occurs for very new or obscure models. You should consult the official ACT website to be certain.
  3. Read the Analysis: The “Analysis Details” section explains *why* the decision was made, usually by referencing the CAS rule or the prohibited list.

Making a decision based on the result is simple: if permitted, you’re set. If not, you’ll need to borrow or purchase a compliant model. You can find good options in our guide to the best calculator for ACT.

Key Factors That Affect ACT Calculator Approval

Several factors determine whether you can use a graphing calculator on the ACT. Understanding these will help you avoid issues on test day.

  • Computer Algebra System (CAS): This is the most important factor. If your calculator has CAS, it’s banned. A CAS can perform algebraic manipulations, which is considered an unfair advantage. If you want to understand this feature better, read our article what is a CAS calculator.
  • QWERTY Keyboard: Calculators with typewriter-style (QWERTY) keyboards are not allowed. This is to prevent devices that could store notes or be used for communication.
  • Communication Ability: Any calculator that can communicate wirelessly (Bluetooth, Wi-Fi) or through an infrared (IR) port is prohibited. If it has an IR port, it must be covered with opaque tape.
  • Power Source: Calculators needing an electrical outlet are not allowed. Your calculator must be battery-powered.
  • Noise and Printing: Calculators that make noise must be muted. Those with a paper tape feature must have the tape removed.
  • Programs and Apps: You must remove any programs or apps that provide CAS functionality. While many programs are allowed, those that perform symbolic algebra are not.

Frequently Asked Questions (FAQ)

Is the TI-84 Plus allowed on the ACT?

Yes, all versions of the TI-84 Plus, including the Plus C and Plus CE, are explicitly allowed on the ACT. It is one of the most recommended calculators for the exam.

Can I use a calculator with programs on the ACT?

Yes, you can have programs on your calculator, as long as they do not provide Computer Algebra System (CAS) functionality. For example, programs that find roots of a quadratic equation are fine, but programs that solve ‘x’ in terms of variables are not. Proctors may ask to clear your calculator’s RAM, so don’t rely on programs you can’t live without.

What happens if I bring a prohibited graphing calculator on the ACT?

If you are caught using a prohibited calculator, you will likely be dismissed from the testing room, and your test scores will be voided. It is your responsibility to check your calculator model beforehand.

Do I need a graphing calculator for the ACT?

No, it is not necessary. All problems on the ACT Math test can be solved without a calculator. However, a graphing calculator can save significant time on certain problems, especially those involving functions, graphs, and complex calculations, if you know how to use it efficiently. For help with this, see our ACT math section tips.

Is the TI-Nspire allowed on the ACT?

This is a common point of confusion. The standard TI-Nspire and TI-Nspire CX models are PERMITTED. However, the TI-Nspire CAS and TI-Nspire CX CAS models are PROHIBITED. The “CAS” in the name makes all the difference.

Can I share my calculator with another student?

No. Sharing calculators during the test is strictly prohibited under any circumstances.

What is the difference between the SAT and ACT calculator policy?

The ACT policy is generally stricter. The SAT allows some calculators with CAS functionality (like the TI-89), whereas the ACT bans all of them. Always check the policy for each specific test. Our SAT calculator policy checker can help with that.

Does the digital ACT have a built-in calculator?

Yes, the digital version of the ACT includes a built-in Desmos graphing calculator. Students can use this powerful tool or still choose to bring their own approved handheld calculator.

Continue your test prep with our other specialized tools and guides.

© 2026 Date Calculators Inc. All information is provided for guidance and is subject to change. Always check the official ACT.org website for the most current calculator policy.


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