What Calculator Can I Use on the ACT?
Ensure your device is test-day ready. Use our interactive checker to verify if your specific calculator brand and model comply with the official ACT calculator policy.
Has Computer Algebra System (CAS) functionality
Has a QWERTY (typewriter-style) keyboard
Has Bluetooth or Wireless capabilities
Uses paper tape or printing mechanism
Requires a power cord (not battery operated)
Forbidden Features Found: 0
Policy Compliance: 0%
Required Action: None
Formula: Permissibility = Model Compatibility – (CAS + Communication + Keyboard + External Power)
Device Compliance Distribution
Visual representation of the “what calculator can i use on the act” feature weightings.
■ Prohibited Features
What is what calculator can i use on the act?
Understanding what calculator can i use on the act is a critical first step for any high school student preparing for the college admissions process. The ACT, unlike some other standardized tests, maintains a very specific list of prohibited devices. This policy exists to ensure that students are tested on their mathematical reasoning and problem-solving abilities, rather than the raw processing power of their hardware.
The core of the what calculator can i use on the act question revolves around “CAS” or Computer Algebra Systems. Calculators equipped with CAS can solve algebraic equations symbolically, which the ACT organizers consider an unfair advantage. This is why models like the TI-89 and TI-Nspire CAS are strictly forbidden. Students from 10th to 12th grade should use this tool to verify their hardware well before the test date to avoid last-minute stress at the testing center.
what calculator can i use on the act Formula and Mathematical Explanation
While the ACT policy isn’t a math formula in the traditional sense, it follows a strict logical algorithm. We can represent the permissibility of a device as a binary logical evaluation:
Permissibility (P) = A ∩ ¬(C ∪ K ∪ W ∪ T ∪ E)
Where:
- A: Is a standard scientific or graphing calculator.
- C: Computer Algebra System (CAS).
- K: QWERTY Keyboard.
- W: Wireless Communication (Bluetooth/WiFi).
- T: Paper Tape/Printing mechanism.
- E: External Power requirement (Power Cords).
| Variable | Policy Meaning | Unit/Type | Typical Range |
|---|---|---|---|
| CAS Presence | Ability to solve equations symbolically | Boolean (Yes/No) | No (Required) |
| Keyboard Type | Character layout of the device | Non-QWERTY | Non-QWERTY |
| Communication | Ability to transmit data to other devices | Wireless/Wired | None allowed |
| Power Source | How the device stays turned on | Battery/Solar | Internal only |
Practical Examples (Real-World Use Cases)
Example 1: The Standard Graphing Choice
A student uses a TI-84 Plus CE. This model is a graphing calculator but does not have CAS. It uses a standard non-QWERTY layout and runs on battery.
Input: Brand: TI-84, CAS: No, QWERTY: No.
Output: Allowed. This is the most popular answer to what calculator can i use on the act.
Example 2: The Forbidden Advanced Model
A student brings a TI-89 Titanium. This model features a Computer Algebra System.
Input: Brand: TI-89, CAS: Yes.
Output: Prohibited. Even though it is a Texas Instruments model, the CAS functionality violates the fairness policy.
How to Use This what calculator can i use on the act Calculator
- Select Your Brand: Use the dropdown to find your calculator series. If it’s not listed, select “Other”.
- Feature Audit: Look at your physical device. Does it have a full keyboard like a laptop? Does it solve algebraic variables like “x”? Check the boxes accordingly.
- Read the Status: The green or red box will instantly update with your permissibility status.
- Check Required Actions: Some calculators, like the TI-Nspire (non-CAS), require the “Press-to-Test” mode or specific covers.
- Copy Results: Use the copy button to save your device status for your test-prep notes.
Key Factors That Affect what calculator can i use on the act Results
Determining what calculator can i use on the act depends on several technical factors that proctors check on test day:
- Symbolic Manipulation (CAS): This is the #1 reason for disqualification. If your calculator can factor polynomials or solve integrals with variables, it is likely banned.
- Physical Dimensions: Large displays or those that can be tilted up like a laptop may be scrutinized.
- Input Methods: Stylus-driven devices or those with touchscreens are generally allowed unless they have CAS, but QWERTY layouts are always banned.
- Sound and Noise: Calculators must be silent. Any device that “talks” or makes beep sounds must have those features disabled.
- Data Storage: While most graphing calculators store data, devices that act as cellular phones or tablets are strictly forbidden.
- Modified Software: Using custom OS or programs that emulate CAS on a non-CAS device is a violation of the ACT terms of service.
Frequently Asked Questions (FAQ)
Is the TI-Nspire CX II allowed on the ACT?
Yes, provided it is the non-CAS version. The TI-Nspire CX II CAS is prohibited, but the standard CX II is one of the most common answers to what calculator can i use on the act.
Can I bring two calculators to the ACT?
Yes, you may bring a backup calculator. However, both must be cleared by the proctor and only one can be on your desk at a time.
What happens if my calculator dies during the math section?
ACT proctors do not provide batteries or spare calculators. It is your responsibility to ensure your device is charged. This is why many students choose a simple scientific model as a backup.
Are scientific calculators better than graphing for the ACT?
Not necessarily. While scientific calculators are always allowed, graphing calculators help with visual problem solving in the math section.
Does the ACT provide an on-screen calculator?
For the computer-based ACT, an on-screen calculator is provided, but you are still permitted to bring your own approved physical device.
Is the Casio fx-9750GIII allowed?
Yes, this Casio model is fully compliant with the what calculator can i use on the act guidelines as it lacks a CAS system.
Can I use a calculator on the Science section?
No. Calculators are strictly prohibited on all sections of the ACT except for the Math section.
Are there any “banned” scientific calculators?
Generally, no. Most basic scientific calculators do not have the prohibited features like CAS or wireless communication.
Related Tools and Internal Resources
- how to prepare for the ACT – A comprehensive guide to study schedules and materials.
- ACT math section tips – Strategies to maximize your score using your approved calculator.
- best graphing calculators for students – Reviews of the top models permitted by the ACT.
- standardized testing tools – A list of essential items to bring on test day.
- ACT vs SAT calculator rules – Understanding the differences in device policies between the two major tests.
- calculating ACT scores – How to convert your raw scores into the 1-36 scale.