ACT Accepted Calculators: The Ultimate 2026 Guide
ACT Calculator Eligibility Checker
Unsure if your calculator is permitted on test day? Use this tool to quickly check against the official ACT calculator policy. Enter your calculator’s model and check any features it has.
Entering the model name helps check against the explicitly prohibited list.
What are ACT Accepted Calculators?
ACT accepted calculators are the specific types and models of calculators that students are permitted to use during the mathematics portion of the ACT test. The ACT has a detailed policy designed to ensure fairness and test security. While many calculators are allowed, several types are explicitly prohibited, usually because they can perform tasks that would give a student an unfair advantage. Understanding the list of ACT accepted calculators is a critical part of test preparation.
This policy applies to anyone taking the ACT test. Failure to adhere to it can result in dismissal from the testing center and the voiding of your scores. A common misconception is that any graphing calculator is fine, but this is not true. Models with Computer Algebra Systems (CAS), for example, are strictly forbidden. Knowing the rules for ACT accepted calculators prevents a major headache on test day.
Understanding the Official ACT Calculator Policy
The core of the ACT’s policy is to allow most standard calculators while prohibiting those with advanced communication or symbolic manipulation features. The “formula” for whether a calculator is accepted is less of a mathematical equation and more of a checklist of rules. If your calculator violates any of the key prohibited features, it’s not allowed. The ACT organization provides a clear, though sometimes complex, set of guidelines for ACT accepted calculators.
Here is a step-by-step breakdown of the rules that determine the list of ACT accepted calculators. A device is generally prohibited if it can communicate wirelessly, has a QWERTY keyboard, or includes a Computer Algebra System (CAS).
| Rule/Feature | Meaning | Status on ACT | Typical Range of Application |
|---|---|---|---|
| Computer Algebra System (CAS) | Can solve algebraic equations symbolically. | Prohibited | Found in models like TI-89, TI-Nspire CAS, HP Prime. |
| QWERTY Keyboard | A lettered keyboard in the standard typewriter layout. | Prohibited | Looks like a computer keyboard. |
| Wireless Communication | Includes Wi-Fi, Bluetooth, or any infrared data port. | Prohibited | Some HP models have infrared ports that must be covered. |
| External Power | Requires being plugged into an electrical outlet. | Prohibited | Calculator must be battery-operated. |
| General Computing Devices | Laptops, tablets, cell phones, smartwatches. | Prohibited | Any device not designed solely as a calculator is banned. |
| Graphing Capability | Can plot equations on a coordinate plane. | Permitted (mostly) | Most TI-83, TI-84, and non-CAS TI-Nspire models are allowed. |
Practical Examples of ACT Accepted Calculators
Example 1: The Permitted Workhorse (TI-84 Plus CE)
A student has a Texas Instruments TI-84 Plus CE. They use our ACT Accepted Calculators checker.
- Inputs: Model name “TI-84 Plus CE”, no prohibited features checked.
- Calculation: The tool checks the model name against the prohibited list (it’s not on it) and confirms no prohibited features are selected.
- Output: The primary result is “PERMITTED”. The intermediate results explain that it’s a standard graphing calculator without CAS and is one of the most common ACT accepted calculators. This gives the student confidence for test day.
Example 2: The Prohibited Powerhouse (TI-89 Titanium)
Another student has a Texas Instruments TI-89 Titanium, a powerful calculator for college-level math.
- Inputs: Model name “TI-89” and checks the “Has a Computer Algebra System (CAS)” box.
- Calculation: The tool immediately flags the model name, as all TI-89 models are explicitly prohibited. The CAS checkbox also triggers a prohibited status.
- Output: The primary result is “PROHIBITED”. The intermediate results clearly state: “This calculator is prohibited because it contains a Computer Algebra System (CAS). All models starting with TI-89 are banned by the ACT.” This warning helps the student find an alternative from the list of ACT accepted calculators before it’s too late.
How to Use This ACT Accepted Calculators Checker
This tool is designed for simplicity and accuracy, helping you determine if your device is one of the many ACT accepted calculators.
- Enter Model Name: Start by typing your calculator’s model number into the first input field. This helps us check against the list of explicitly banned models.
- Select Features: Review the list of checkboxes. If your calculator has any of those features (like a QWERTY keyboard or CAS), check the corresponding box.
- Review the Instant Result: The result section will update in real-time. A green “PERMITTED” box means you are likely safe, while a red “PROHIBITED” box is a clear warning.
- Understand the ‘Why’: Read the intermediate results below the main status. They explain exactly why your calculator is or isn’t allowed, which is crucial for understanding the policy for ACT accepted calculators.
- Use the Dynamic Chart: The bar chart provides a visual representation of the rules, turning red for any prohibited feature you select, reinforcing your understanding.
Key Factors That Affect ACT Calculator Acceptance
Navigating the world of ACT accepted calculators requires understanding a few key factors that the ACT committee scrutinizes to maintain a level playing field.
1. Computer Algebra System (CAS)
This is the most significant factor. A CAS can perform symbolic algebra, such as factoring, solving for variables, and finding derivatives. Calculators with CAS (like the TI-89 or TI-Nspire CAS) are banned because they can solve many algebra problems without requiring the student to demonstrate the steps. This is a core rule for all ACT accepted calculators.
2. QWERTY Keyboards
Any calculator with a keyboard laid out like a computer (QWERTY format) is prohibited. This is to prevent the use of devices that could store text notes or have other computer-like functions. This is an easy-to-spot feature that disqualifies a calculator.
3. Communication and Connectivity
Any ability to communicate with other devices is forbidden. This includes Bluetooth, Wi-Fi, and even older infrared ports. If a calculator has an infrared port (like some older HP models), it must be completely covered with opaque tape to be considered one of the ACT accepted calculators.
4. Power Source
Calculators must be battery-powered. Devices that need to be plugged into an electrical outlet are not allowed in the testing room, primarily for logistical and safety reasons. Ensure your batteries are fresh!
5. Physical Prohibitions (Tape, Sound)
Calculators that can print to a paper tape must have the tape removed. Similarly, any feature that makes noise must be disabled. The testing environment must remain quiet and free of distractions. This is a minor but important part of the ACT accepted calculators policy.
6. Non-Calculator Devices
This is a catch-all rule that prohibits using a calculator app on a cell phone, tablet, smartwatch, or laptop. The device must be a standalone calculator. Forgetting this rule can lead to immediate dismissal from the test.
Frequently Asked Questions (FAQ)
It depends. The TI-Nspire CX (non-CAS) and TI-Nspire CX II (non-CAS) are permitted. However, the TI-Nspire CX CAS and TI-Nspire CX II CAS are strictly prohibited. You must check that “CAS” does not appear on your calculator’s screen or body.
If a proctor discovers you have a prohibited calculator, you will likely be dismissed from the test, and your scores will be invalidated. It is your responsibility to ensure you have one of the ACT accepted calculators.
Yes, any four-function calculator is allowed. While it’s not the best tool for the complex problems on the ACT Math test, it is permitted. However, using a scientific or graphing calculator from the list of ACT accepted calculators is highly recommended.
While the ACT policy focuses on prohibited functionalities, some proctors may ask you to clear your calculator’s memory to ensure no notes or formulas are stored. It’s a good practice to know how to do this quickly. Check out our guide to ACT math prep for more tips.
Yes, the TI-84 Plus (including the CE version) is one of the most popular and reliable ACT accepted calculators. It provides all the graphing and scientific functions you need without any prohibited features.
A scientific calculator can handle functions like trigonometry, logarithms, and exponents. A graphing calculator can do all that plus plot functions on a graph. Both types are on the list of ACT accepted calculators, but graphing calculators are more helpful for visualizing problems.
No. Sharing calculators is strictly prohibited during the test. You must bring your own, and it’s a good idea to bring a backup with fresh batteries just in case.
The official ACT website maintains the most current calculator policy. Our tool and article summarize these rules, but always double-check the official source if you’re in doubt about your specific model of calculator. Being informed about ACT accepted calculators is key.
Related Tools and Internal Resources
- ACT Score Calculator – After the test, use this tool to understand your composite and section scores.
- ACT Math Prep Guide – A deep dive into the topics and strategies needed to excel on the math section, a perfect companion for your study with one of the ACT accepted calculators.
- ACT vs. SAT Comparison – Trying to decide which test is right for you? This guide breaks down the key differences.
- Best Graphing Calculators for School – A review of top calculators that are effective for both high school and college-level coursework.
- College Admissions Guide – Learn how your ACT scores fit into your overall college application.
- Test Day Checklist – Make sure you have everything you need before you head out, including one of the approved ACT accepted calculators.