What Calculator Is Allowed On The Act

Official Compliance Checker for Exam Day Success

What is what calculator is allowed on the act?

The term what calculator is allowed on the act refers to the official policy maintained by ACT, Inc. regarding the types of electronic calculating devices students can use during the Mathematics portion of the exam. Unlike the SAT, which allows almost all graphing calculators including those with CAS features, the ACT maintains a much stricter set of guidelines. Understanding what calculator is allowed on the act is critical for students to avoid disqualification on test day.

Any student planning to take the ACT should use this checker. It’s a common misconception that all “graphing calculators” are permitted. In reality, several high-end models used in AP Calculus or engineering classes are strictly prohibited. The core philosophy of the ACT policy is to ensure that the calculator helps with computation but doesn’t solve the math for the student using symbolic manipulation.

what calculator is allowed on the act Formula and Mathematical Explanation

The compliance of a calculator isn’t determined by a math formula, but by a logic-based “Prohibition Algorithm.” A device is permitted if and only if it satisfies the following logical conditions:

• CAS Condition: The device must NOT possess Computer Algebra System (CAS) functionality.
• Input Condition: The device must NOT have a QWERTY-style keyboard.
• Connectivity Condition: The device must NOT have active wireless, cellular, or Bluetooth capabilities.
• Hardware Condition: The device must NOT have a paper tape printer or require an external power outlet.

Variable	Meaning	Unit/Type	Typical Range
CAS	Symbolic Algebra capability	Boolean (Yes/No)	Must be No
Keyboard	Physical button layout	Layout Type	Numeric/Alpha-grid
Wireless	Data transmission hardware	Hardware Presence	Must be Disabled/Absent
Model ID	Manufacturer Series	String	TI-84, Casio fx, etc.

Practical Examples (Real-World Use Cases)

Example 1: The TI-84 Plus CE
A student brings a TI-84 Plus CE. This model is a graphing calculator but does NOT have CAS. It has a standard button layout and no wireless capability.
Result: ALLOWED. This is widely considered the best choice for the exam due to its color screen and speed.

Example 2: TI-Nspire CX II CAS
A student brings the “CAS” version of the Nspire. Because it can solve “x + y = 10” for x symbolically, it violates the CAS rule.
Result: PROHIBITED. The student would be asked to put the calculator away or potentially be dismissed from the testing center.

How to Use This what calculator is allowed on the act Calculator

Follow these steps to ensure your device is ready for test day:

1. Identify your model: Look at the top or back of your calculator for the specific model number (e.g., TI-84 Plus).
2. Select the Model: Choose the closest match from our dropdown menu.
3. Check for CAS: If your calculator has “CAS” printed on the front, select “Yes” in the CAS dropdown.
4. Verify Hardware: Ensure you haven’t modified the device with wireless adapters.
5. Review Results: The green “ALLOWED” badge means you are safe to use that device.

Key Factors That Affect what calculator is allowed on the act Results

1. CAS Functionality: This is the most common reason for a calculator being banned. If a device can factor polynomials or simplify radicals symbolically, it’s out.

2. Keyboard Layout: Devices with full QWERTY keyboards are viewed as potential cheating tools for storing large amounts of text. Standard alphabetic grids (where letters are in a straight line) are usually okay.

3. Sound and Power: If your calculator makes noise (and it can’t be turned off) or needs to be plugged into a wall, it is prohibited.

4. Exam Version: Some international versions of the ACT may have slightly different rules regarding digital vs. paper testing, though the core calculator list remains consistent.

5. Proctor Discretion: Even if a model is “allowed,” a proctor can prohibit it if they suspect it has been modified or contains prohibited programs.

6. Memory Clearing: On test day, you are expected to clear your calculator’s memory. Knowing how to do this is as important as having the right model.

Frequently Asked Questions (FAQ)

Can I use a TI-Nspire on the ACT?

Yes, but only if it is the non-CAS version. The TI-Nspire CAS and TI-Nspire CX CAS are strictly prohibited.

Are scientific calculators allowed?

Absolutely. Most scientific calculators (like the TI-30X IIS) are allowed and are often more reliable than graphing ones.

What happens if I bring a prohibited calculator?

The proctor will likely ask you to put it away. If you are caught using it during the test, your scores will be canceled and you may be asked to leave.

Is the TI-84 Plus CE allowed?

Yes, the TI-84 Plus CE is one of the most popular and fully allowed calculators for the ACT.

Can I bring two calculators?

Yes, you can bring a backup. However, you may only have one calculator on your desk at a time.

Are smartwatches allowed as calculators?

No. All wearable technology and devices with communication capabilities are strictly prohibited.

Do I need to clear my programs?

The ACT policy states that you should clear any programs that have more than 25 lines of code or perform forbidden functions. Proctors often require a full memory reset.

Can I use a calculator on the Science section?

No. Calculators are only permitted during the Mathematics portion of the ACT.

Related Tools and Internal Resources

• ACT Prep Guide: A complete strategy for the Math section.
• Best Graphing Calculators: Our review of the fastest allowed models.
• SAT vs ACT Calculators: Comparing the rules between the two major exams.
• Math Formulas to Memorize: Since your calculator can’t do everything, learn these.
• Time Management ACT: How to use your calculator efficiently.
• Standardized Testing Tools: Other equipment you need for test day.