ACT Calculator Allowed Checker
Instantly determine if your calculator is permitted for use on the ACT® test. Answer a few simple questions about your calculator’s features to see your result.
CAS can perform symbolic algebra, like solving for variables. Examples include TI-89, TI-Nspire CAS, and HP Prime.
This means a keyboard arranged like a computer or typewriter.
Devices that can communicate wirelessly (e.g., Bluetooth, Wi-Fi) are prohibited.
Your calculator must be battery-operated.
Features that cause a disturbance must be disabled.
Prohibited Feature Analysis
What Does “ACT Calculator Allowed” Mean?
The phrase “act calculator allowed” refers to the official policy set by ACT, Inc. that dictates which calculators are permitted for use during the mathematics section of the ACT test. While test-takers are encouraged to use a calculator, not all devices are acceptable. The policy is designed to ensure fairness, prevent academic dishonesty, and avoid disruptions in the testing environment. Generally, any four-function, scientific, or graphing calculator is allowed as long as it isn’t on the prohibited list and doesn’t have specific forbidden features. Understanding this policy is crucial for test day success.
The ACT Calculator Policy “Formula”
There is no mathematical formula, but rather a set of rules that determine if a calculator is allowed. You can think of it as a decision-making checklist. This calculator automates that checklist for you. The core principle is that any feature that provides an unfair advantage, such as solving algebraic equations symbolically or communicating with other devices, is forbidden.
| Variable (Feature) | Meaning | Unit (Status) | Typical Range |
|---|---|---|---|
| CAS | Computer Algebra System | Boolean (Yes/No) | Prohibited if ‘Yes’ |
| QWERTY Keyboard | Typewriter-style letter keys | Boolean (Yes/No) | Prohibited if ‘Yes’ |
| Communication Capability | Wi-Fi, Bluetooth, Infrared | Boolean (Yes/No) | Prohibited if ‘Yes’ |
| External Power | Requires an AC power cord | Boolean (Yes/No) | Prohibited if ‘Yes’ |
| Disturbing Features | Makes noise or prints paper tape | Conditional | Allowed only if feature is disabled/removed |
Practical Examples
Example 1: Texas Instruments TI-84 Plus
- Inputs: CAS (No), QWERTY (No), Communication (No), Power Cord (No), Tape/Noise (No)
- Units: N/A (Feature-based)
- Result: Allowed. The TI-84 Plus is one of the most common and recommended calculators for the ACT. You can learn more about its features with our ACT and TI-84 Guide.
Example 2: Texas Instruments TI-89 Titanium
- Inputs: CAS (Yes), QWERTY (No), Communication (No), Power Cord (No), Tape/Noise (No)
- Units: N/A (Feature-based)
- Result: Not Allowed. The TI-89 is prohibited because it has a built-in Computer Algebra System (CAS).
Example 3: Smartphone Calculator App
- Inputs: CAS (Varies), QWERTY (On-screen), Communication (Yes), Power Cord (No)
- Units: N/A (Feature-based)
- Result: Not Allowed. Calculators built into cell phones or any other electronic communication devices are explicitly banned.
How to Use This ACT Calculator Allowed Checker
- Inspect Your Calculator: Look at your physical calculator and identify its features. Check the model number (e.g., TI-84, HP Prime).
- Answer the Questions: For each question in the calculator, select ‘Yes’ or ‘No’ based on your device’s features. The helper text provides clues for each feature. For help, consult our guide on Understanding Calculator Features.
- Review the Result: The tool will instantly provide a result: “Allowed,” “Not Allowed,” or “Allowed with Modification.” It will also state the specific reason for the decision.
- Interpret the Results: If “Allowed,” you are ready for the test. If “Not Allowed,” you must get a different calculator. If “Allowed with Modification,” you must take steps like removing tape or turning off sound before test day.
Key Factors That Affect ACT Calculator Allowance
- Computer Algebra System (CAS): This is the most common reason for a calculator to be banned. CAS can perform symbolic manipulation (e.g., factor `x^2-1` into `(x-1)(x+1)`), which is considered an unfair advantage.
- QWERTY Keypads: Any calculator with a typewriter-like keyboard is prohibited. This prevents devices that are essentially mini-computers.
- Communication Devices: Calculators cannot be part of a phone, tablet, or laptop. Any wireless capability must be absent or disabled.
- Power Source: The device must be battery-powered. Calculators with power cords are not permitted.
- Programs and Documents: While many graphing calculators can store programs, any program that adds CAS functionality must be removed before the test. Explore our guide on managing calculator programs for more information.
- Physical Modifications: Some calculators with features like an infrared data port are only allowed if the port is completely covered with opaque tape.
Frequently Asked Questions (FAQ)
Is the TI-84 Plus allowed on the ACT?
Yes, all versions of the TI-84 Plus (including the Plus CE) are fully allowed on the ACT, as they do not have a built-in Computer Algebra System (CAS). It is one of the most recommended calculators for the test.
What’s the difference between a scientific and graphing calculator?
A scientific calculator can handle functions like trigonometry and logarithms. A graphing calculator can do all that, plus plot equations on a coordinate plane. Both types are generally allowed. Our guide to choosing the right ACT calculator can help you decide.
Can I use a calculator on the ACT Science section?
No, calculators are only permitted during the mathematics test section. They are not allowed on the Science, Reading, or English sections.
What happens if I bring a prohibited calculator?
Testing staff will not permit you to use it. You may be dismissed from the test, and your score could be voided. It is your responsibility to bring a compliant device.
Are there any online ACT calculators allowed?
If you are taking the computer-based version of the ACT, an on-screen calculator may be provided within the testing platform. You cannot use your own online calculator tools.
Do I have to clear the memory on my calculator?
You must remove any programs that add CAS functionality. While proctors may not check every calculator, it is your responsibility to comply with the policy. Back up any important data before removing programs.
Is the ACT calculator policy the same as the SAT policy?
No, they are different. For example, the SAT has historically had a “no calculator” section, which the ACT does not. Always check the specific policy for the test you are taking. The College Board, which administers the SAT, has also moved to prohibit CAS calculators.
What if my calculator makes noise?
You must turn off the sound. Any feature that can cause a disturbance in the testing room must be disabled before you begin.