ACT Calculator Policy Checker
Can I use my calculator on the ACT? Use our checker to see if your model is permitted.
Check Your Calculator’s Status
Enter the model number exactly as it appears on your calculator.
What is the ACT Calculator Policy?
The ACT calculator policy is designed to ensure fairness and test security. While you are allowed to use a calculator on the Math Test, not all calculators are permitted. The policy outlines which types of calculators are allowed, which are explicitly prohibited, and which require specific modifications. All questions on the ACT Math Test can be solved without a calculator, but using a familiar and approved one can help you save time and improve accuracy. It is your responsibility to bring an approved calculator; test centers will not provide them.
Permitted vs. Prohibited Calculators
The ACT has clear rules about what makes a calculator acceptable. Generally, you can use any four-function, scientific, or graphing calculator, as long as it’s not on the prohibited list. The main restrictions target devices that could provide an unfair advantage, such as those with advanced communication features or computer algebra systems (CAS).
Prohibited Features
You cannot use any device that:
- Has a Computer Algebra System (CAS). These systems can solve algebraic equations, which is against the rules.
- Has a QWERTY keyboard, like a computer.
- Can access the internet, store text, or communicate wirelessly. This includes cell phones, tablets, and smartwatches.
- Needs to be plugged into an electrical outlet.
- Makes noise (unless the sound is disabled).
| Brand | Prohibited Models / Series |
|---|---|
| Texas Instruments | Models starting with TI-89 or TI-92, TI-Nspire CAS |
| Hewlett-Packard (HP) | HP Prime, HP 48GII, models starting with HP 40G, HP 49G, HP 50G |
| Casio | fx-CP400, ClassPad 300/330, Algebra fx 2.0, models starting with CFX-9970G |
For more details, check out this guide on approved calculators for the ACT.
Practical Examples
Understanding the rules can be easier with examples. Here are a few common scenarios:
- TI-84 Plus CE: This calculator is Permitted. It’s a graphing calculator without a CAS, making it one of the most popular choices for the ACT.
- TI-89 Titanium: This calculator is Prohibited. It contains a built-in Computer Algebra System (CAS), which is explicitly banned.
- TI-Nspire (non-CAS): This model is Permitted. However, the CAS version (TI-Nspire CAS) is prohibited, so it’s crucial to know which one you have.
- Casio fx-9750GII: This graphing calculator is Permitted and is another excellent choice for the test.
How to Use This ACT Calculator Checker
Using our tool is simple and will help you determine if you can use your calculator on the ACT.
- Select Brand: Choose your calculator’s brand from the dropdown list.
- Enter Model: Type the model number into the text field. Be as precise as possible.
- Check Status: Click the “Check Eligibility” button.
- Review Result: The tool will display one of three statuses: Permitted, Prohibited, or Conditional (meaning modifications are required). The result is based on the official ACT calculator policy.
Key Factors That Affect Calculator Legality
- Computer Algebra System (CAS): This is the most common reason a calculator is banned. CAS can perform symbolic algebra, like simplifying or solving equations with variables.
- QWERTY Keyboard: Any calculator with a keyboard layout like a computer’s is prohibited.
- Connectivity: Devices that can connect to the internet, use Bluetooth, or have infrared data ports are not allowed (though some with infrared can be used if the port is covered).
- Power Source: Calculators needing an external power source are banned. Your calculator must be battery-operated.
- Noise and Printing: Calculators that make noise must be muted. Those with a paper tape must have the tape removed.
- Stored Programs/Documents: You must clear any documents or programs that have CAS functionality from your calculator’s memory before the test.
Learn more about what calculators are allowed on the ACT.
Frequently Asked Questions (FAQ)
Can I use my TI-84 Plus on the ACT?
Yes, the entire TI-84 Plus series, including the TI-84 Plus and TI-84 Plus CE, are permitted on the ACT. They are popular choices among students.
Are all scientific calculators allowed?
Yes, virtually all scientific calculators are allowed, as they do not typically have prohibited features like CAS or QWERTY keyboards.
What happens if I bring a prohibited calculator?
If a test proctor determines your calculator is prohibited, it will be confiscated, and you may be dismissed from the test center and have your score voided.
Can I use a calculator on my phone?
No, you cannot use a cell phone, tablet, or laptop as a calculator under any circumstances.
What does “CAS” mean?
CAS stands for Computer Algebra System. It’s a sophisticated program that can manipulate mathematical expressions in a symbolic form, much like you would on paper. This functionality is banned by the ACT.
Do I have to clear the memory on my calculator?
You are required to remove any programs or documents that have CAS functionality. It’s a good practice to clear any non-essential programs to avoid issues.
Can I share a calculator with a friend?
No, sharing calculators is not permitted during the test.
What if my calculator runs out of battery?
You are responsible for ensuring your calculator works. It’s highly recommended to bring a backup calculator or at least a spare set of batteries.