ACT Calculator Policy Checker
Can you use your calculator in the ACT test? Enter your model below to find out instantly.
Check Your Calculator’s Eligibility
Enter the full model name as written on your calculator.
What is the ACT Calculator Policy?
The ACT has a specific policy regarding which calculators are permitted during the mathematics portion of the test. This policy is designed to ensure fairness for all test-takers and prevent any unfair advantages. While you can solve all ACT math problems without a calculator, using a familiar and permitted device can significantly improve your speed and accuracy. Generally, any four-function, scientific, or graphing calculator is allowed, as long as it’s not on the official prohibited list and doesn’t have certain banned features.
It’s crucial to understand that you are only allowed to use a calculator on the math section of the ACT. Using it on any other section, such as Reading or English, is a violation of the rules. For more information on test day rules, check out this guide on the ultimate ACT test day checklist.
How the Calculator Check Works (The “Formula”)
Our calculator doesn’t use a mathematical formula, but rather a logical one based on the official ACT guidelines. It checks the calculator model you enter against a database of rules and known prohibited models. Here’s a breakdown of the primary checks performed:
- Prohibited Model List: The tool first checks if your model number is on the list of explicitly banned calculators.
- Feature-Based Prohibition: It then scans the model name for keywords indicating prohibited features, most notably “CAS” (Computer Algebra System). Calculators with CAS are not allowed because they can solve algebraic equations symbolically.
- General Rule Application: Finally, it provides guidance on general rules, such as the prohibition of calculators with QWERTY keyboards or those that need an electrical outlet.
| Feature/Rule | Meaning | Unit/Type | Typical Range (Status) |
|---|---|---|---|
| Computer Algebra System (CAS) | Ability to manipulate symbolic expressions (e.g., solve for x). | Software Feature | Strictly Prohibited |
| QWERTY Keyboard | A keyboard with keys in the standard typewriter layout. | Hardware Feature | Strictly Prohibited |
| Wireless/Internet Capability | Cannot connect to the internet or other devices. | Hardware Feature | Strictly Prohibited |
| Needs External Power | Must be battery-operated. Cannot be plugged in during the test. | Power Source | Strictly Prohibited |
| Makes Noise or Prints | Features that can disturb other test-takers must be disabled. | Output Feature | Must be modified (turn off sound, remove paper tape). |
Practical Examples
Example 1: A Permitted Calculator
- Input: TI-84 Plus
- Analysis: The model is not on the prohibited list and does not contain “CAS” or a QWERTY keyboard.
- Result: PERMITTED. This is one of the most common and widely accepted calculators for the ACT.
Example 2: A Prohibited Calculator
- Input: TI-Nspire CAS
- Analysis: The model name explicitly contains “CAS”, which stands for Computer Algebra System.
- Result: PROHIBITED. Calculators with CAS functionality are banned. Note that the non-CAS version, the TI-Nspire, is allowed.
Deciding between tests? It might be helpful to compare the SAT vs ACT, as their calculator policies differ slightly.
How to Use This ACT Calculator Checker
- Locate Your Calculator’s Model Name: Look at the top of your calculator; the full model name is usually printed there (e.g., “TI-30XS MultiView”).
- Enter the Model Name: Type the full name into the input field above.
- Click “Check Status”: Our tool will instantly analyze the model based on ACT’s official rules.
- Review the Result: The result will be color-coded for clarity: Green (Permitted), Yellow (Permitted with Modification), or Red (Prohibited). The details section will explain why the decision was made.
Key Factors That Affect ACT Calculator Approval
- Computer Algebra System (CAS): This is the most common reason for a graphing calculator to be banned. Models like the TI-89, TI-Nspire CAS, and HP Prime are prohibited for this reason.
- QWERTY Keypads: Any device with a typewriter-style keyboard is not allowed.
- Programs and Documents: If your calculator can store programs or documents, you must remove any with CAS functionality before the test.
- Communication: Calculators with infrared data ports must have the port covered with opaque tape. Any form of wireless communication is forbidden.
- Noise and Paper: Calculators that make noise must be muted, and those with a paper tape must have the tape removed.
- Device Type: You cannot use the calculator on a phone, tablet, or laptop. It must be a dedicated handheld calculator. For students interested in the hardware, see our article on the best graphing calculators for college.
Frequently Asked Questions (FAQ)
Can I use a calculator on all sections of the ACT?
No, calculators are only permitted for the Mathematics section of the ACT. Use during any other section is a violation of testing rules.
What happens if my calculator is prohibited?
If a proctor determines your calculator is prohibited, you will not be allowed to use it. In some cases, you may be dismissed from the test. It’s essential to check your calculator’s eligibility before test day.
Is the TI-84 Plus allowed on the ACT?
Yes, all versions of the TI-84 Plus (including the Plus, C Silver Edition, and CE) are permitted on the ACT. They are a very popular choice for students.
What if my calculator model isn’t in your tool?
Our tool covers the most common cases. If your model is not found, you should refer to the official ACT calculator policy on their website or consult the general rules. As long as it doesn’t have a QWERTY keyboard, CAS, or wireless capabilities, it is likely permitted.
Do I have to clear the memory on my calculator?
You are required to remove any programs that have computer algebra system functionality. While it’s a good practice to clear your calculator’s RAM, it is not explicitly required to remove all programs unless they violate the CAS rule.
Can I share my calculator with a friend?
No, sharing calculators is strictly forbidden during the test. You should bring your own, and it’s a good idea to have a backup calculator or extra batteries.
What’s the difference between the TI-Nspire and the TI-Nspire CAS?
The standard TI-Nspire (non-CAS) is permitted. The TI-Nspire CAS has a Computer Algebra System, which is prohibited. The “CAS” in the name is the key differentiator.
Do I need a graphing calculator for the ACT?
No, all problems on the ACT can be solved without a calculator. However, a graphing or scientific calculator can be a very helpful tool to improve your speed. Check our guide to improving your ACT math score for more tips.
Related Tools and Internal Resources
Preparing for the ACT involves more than just picking the right calculator. Explore our other resources to get fully prepared:
- ACT Prep Courses: Comprehensive courses to boost your score across all sections.
- Free ACT Practice Tests: Test your skills with realistic practice exams.
- SAT vs. ACT Comparison: Not sure which test is right for you? We break it down.
- How to Improve Your ACT Math Score: Strategies and tips specifically for the math section.
- Best Graphing Calculators for College: A look at calculators that will serve you well on the ACT and beyond.
- The Ultimate ACT Test Day Checklist: Make sure you have everything you need for test day.