ACT Calculator Policy Checker
Determine if your calculator is allowed on the ACT test with this easy-to-use tool. Get an instant analysis based on the latest official ACT calculator policy.
Is Your Calculator Permitted?
What is the ACT Calculator Policy?
The ACT Calculator Policy is a set of rules established by ACT, Inc. to ensure fairness and test security for all students taking the ACT test. These rules specify which calculators are permitted, which are prohibited, and which require modification. Calculators are only allowed during the 60-minute Mathematics section of the test; they are not permitted for the English, Reading, or Science sections. While a calculator can be a powerful tool, it’s important to remember that every question on the ACT Math test is designed to be solvable without one. The main purpose of the policy is to prevent any student from having an unfair advantage through devices with advanced communication features or symbolic manipulation capabilities (Computer Algebra Systems).
The ACT Calculator Policy Formula (Rule Logic)
There isn’t a mathematical formula for the ACT calculator policy, but rather a series of logical rules. The calculator checks your input against a database of prohibited models and features. The core logic can be summarized as:
Status = Check(Model Name)
Where the `Check` function performs the following steps:
- Normalization: The input model name is converted to a standard format (e.g., uppercase, spaces removed) for consistent matching.
- Prohibited Model Check: The normalized name is checked against a list of explicitly banned models (e.g., TI-89, HP Prime).
- Prohibited Feature Check: The name is checked for keywords indicating banned features, such as “CAS” (Computer Algebra System) or a QWERTY keyboard.
- General Device Check: The input is checked for terms like “phone,” “tablet,” or “laptop,” which are strictly forbidden.
- Permitted Status: If the model passes all checks, it is generally considered permitted.
| Variable / Rule | Meaning | Unit | Typical Action |
|---|---|---|---|
| CAS (Computer Algebra System) | The ability to solve algebraic equations symbolically. | Boolean (Present/Absent) | Prohibited |
| QWERTY Keyboard | A standard typewriter-style keyboard layout. | Boolean (Present/Absent) | Prohibited |
| Wireless/Internet | Any communication capability (Bluetooth, Wi-Fi, etc.). | Boolean (Present/Absent) | Prohibited |
| Paper Tape / Noise | Calculators that print or make sounds. | Conditional | Allowed only if tape/sound is disabled. |
| Programs / Documents | Ability to store programs or files. | Conditional | Allowed only if all programs and documents are removed. |
Practical Examples
Example 1: A Prohibited Calculator
- Input: TI-Nspire CX II CAS
- Logic: The model name contains “CAS,” which is a prohibited feature. This model is explicitly banned by the ACT.
- Result: Prohibited. Reason: Calculators with a Computer Algebra System (CAS) are not allowed.
Example 2: A Permitted Calculator
- Input: TI-84 Plus
- Logic: This model is not on the prohibited list and does not contain any banned features. It is a widely accepted graphing calculator.
- Result: Permitted. Reason: This model is a standard graphing calculator and is generally allowed. Students should ensure no prohibited programs are stored on it.
How to Use This ACT Calculator Policy Checker
Using this tool is straightforward. Follow these steps to ensure you are ready for test day:
- Enter Your Calculator Model: Type the model name of your calculator into the input field above. Be as specific as possible (e.g., include “Plus” or “CE”).
- Click “Check My Calculator”: The tool will instantly analyze your input based on the official ACT calculator policy.
- Review the Result: The result box will clearly state whether your calculator is “Permitted” or “Prohibited.”
- Read the Explanation: The tool provides a reason for the status, explaining which rule your calculator may violate or confirming its acceptability. For information on the ACT vs SAT, other resources are available.
Key Factors That Affect the ACT Calculator Policy
The ACT’s rules are designed to maintain a level playing field. Here are the key factors that determine if a calculator is allowed:
- Computer Algebra System (CAS): This is the most common reason for a calculator to be banned. CAS can perform symbolic algebra, which gives an unfair advantage. The best calculators for the ACT do not have this feature.
- QWERTY Keyboard: Any calculator with a letter keyboard in the QWERTY format is prohibited as it resembles a computer.
- Communication Capabilities: Devices that can communicate wirelessly (e.g., via infrared, Bluetooth, or Wi-Fi) are not allowed. This includes smartphones, tablets, and smartwatches.
- External Power/Connectivity: Calculators that need to be plugged into an electrical outlet or connect to a computer during the test are forbidden.
- Noise and Printing: Calculators that make noise or have a paper tape printer must be modified (sound off, tape removed) to be used.
- Programs and Data: While many graphing calculators can store programs, the ACT requires that you remove all programs and documents before the test. A proctor may check your calculator’s memory. For more details on what to expect, see our test day guide.
Frequently Asked Questions (FAQ)
Are graphing calculators allowed on the ACT?
Yes, most graphing calculators are allowed, as long as they are not on the prohibited list and do not have a Computer Algebra System (CAS). Popular models like the TI-84 Plus and Casio fx-9750GII are perfectly fine.
Is the TI-84 Plus CE allowed on the ACT?
Yes, the Texas Instruments TI-84 Plus CE is one of the most popular and widely approved calculators for the ACT. You can get great ACT math tips tailored for this model.
What calculators are specifically banned by the ACT?
The ACT explicitly bans models with CAS, such as the TI-89, TI-92, TI-Nspire CAS, HP Prime, and Casio ClassPad series.
Can I use my smartphone’s calculator?
No. All phones, smartwatches, laptops, and any other device capable of external communication are strictly prohibited. Using one will result in your dismissal from the test.
What happens if my calculator runs out of batteries?
Proctors will not provide replacement batteries or a backup calculator. You are responsible for ensuring your calculator is working. It is highly recommended to bring a backup calculator or at least a fresh set of batteries.
Do I need a calculator for the Science section?
No, calculators are only permitted on the Math section of the ACT. They are not allowed on the Reading, English, or Science sections.
Are there any programs I can have on my calculator?
No, the ACT requires that you remove all user-created programs and documents before the test. Proctors may inspect your calculator to ensure compliance.
Can I share my calculator with another student?
No, sharing calculators is not permitted under any circumstances during the test.
Related Tools and Internal Resources
Enhance your ACT preparation with our other resources. Explore these tools and guides to maximize your score.
- ACT Prep Courses: Explore our comprehensive prep courses to master every section of the test.
- Online ACT Practice Tests: Sharpen your skills with full-length practice tests that simulate the real exam experience.
- ACT Math Tips: Learn key strategies and calculator tricks to improve your speed and accuracy on the ACT Math section.
- Best Calculators for the ACT: A detailed review of the top permitted calculators to help you choose the right one.
- ACT vs. SAT Comparison: Understand the key differences between the two major college entrance exams.
- The Ultimate Test Day Guide: Everything you need to know to be prepared and confident on test day.