ACT® Calculator Policy Checker
An easy tool to determine if your calculator is permitted on the test.
Check Your Calculator’s Eligibility
Enter your calculator’s brand and model to see if it meets the requirements for the ACT exam. This tool helps you understand **what calculator can I use on the ACT** by checking against the official prohibited list.
ACT Calculator Rules at a Glance
| Allowed Features | Prohibited Features |
|---|---|
| Basic 4-function calculators | Computer Algebra Systems (CAS) |
| Most graphing calculators (e.g., TI-84) | QWERTY (typewriter-style) keyboards |
| Scientific calculators | Wireless, Bluetooth, or cellular capability |
| Calculators with tape (if tape is removed) | Devices that need an electrical outlet |
| Calculators with IR ports (if port is covered) | Cell phones, laptops, or tablets |
Common Reasons for Prohibited Calculators
What is the ACT Calculator Policy?
The ACT calculator policy outlines the rules for using a calculator on the math portion of the ACT test. While every question on the ACT Math Test can be solved without a calculator, using an approved one can help you save time and improve accuracy. The core of the policy is to ensure fairness and prevent students from using devices that provide an unfair advantage. Understanding **what calculator can I use on the ACT** is a critical part of test preparation. The rules prohibit any calculator that can solve algebraic equations on its own (a feature known as a Computer Algebra System or CAS), has a typewriter-style (QWERTY) keyboard, or can communicate wirelessly.
This policy is for students taking the ACT who want to maximize their performance on the math section. It’s a common misconception that all graphing calculators are banned, which isn’t true. Many popular models, like the TI-84 Plus series, are perfectly acceptable. The key is to check your specific model against the ACT’s criteria before test day.
ACT Calculator Policy Rules and Logic
The “formula” for determining if a calculator is allowed isn’t mathematical but logical. It’s a series of checks against a list of forbidden attributes. If your calculator has any of these attributes, it’s prohibited. The goal when asking **what calculator can I use on the ACT** is to find a device that has zero of these prohibited features. You can find more details in our ACT Prep Course.
| Variable (Feature) | Meaning | Status | Typical Example |
|---|---|---|---|
| Computer Algebra System (CAS) | Ability to solve algebraic equations symbolically (e.g., solve for x). | Prohibited | TI-Nspire CAS, TI-89 |
| QWERTY Keyboard | A full, typewriter-style keyboard. | Prohibited | Old models with text input |
| Wireless/IR Communication | Ability to connect to other devices or the internet (Bluetooth, Wi-Fi, etc.). | Prohibited | Smartphones, smartwatches |
| Power Cord Requirement | Calculator needs to be plugged into an electrical outlet to function. | Prohibited | Printing calculators |
| Programs/Documents | Apps or files with CAS functionality. Non-CAS programs are often okay if cleared. | Prohibited | Downloaded math-solving apps |
Practical Examples (Real-World Use Cases)
Example 1: The Compliant Calculator
- Model: Texas Instruments TI-84 Plus CE
- Analysis: This calculator is a graphing calculator but does NOT have a built-in Computer Algebra System (CAS). It does not have a QWERTY keyboard or wireless capabilities.
- Result: Allowed. This is one of the most common and recommended calculators for the ACT. Knowing you have the right tool is a big part of mastering your ACT math tips.
Example 2: The Prohibited Calculator
- Model: Texas Instruments TI-Nspire CX II CAS
- Analysis: The key issue is the “CAS” in its name. This model includes a Computer Algebra System, which allows it to symbolically solve equations, a feature explicitly banned by the ACT.
- Result: Prohibited. Despite the non-CAS version being allowed, this specific model is not permitted. This is a crucial distinction when considering **what calculator can I use on the ACT**.
How to Use This ACT Calculator Checker
Using this tool is straightforward and can save you from a major headache on test day. Follow these steps to determine your calculator’s status.
- Select the Brand: Choose your calculator’s brand from the dropdown menu. If it’s not listed, select “Other.”
- Enter the Model: Type the model name and number exactly as it appears on the front of the calculator (e.g., “fx-9750GII”).
- Check the Results: Click “Check My Calculator.” The tool will provide an immediate status: “Likely Allowed” or “Prohibited.”
- Read the Explanation: The result will include a brief explanation, especially if the calculator is prohibited, stating the reason (e.g., “Contains ‘CAS’ which is a prohibited feature”).
- Decision-Making: If your calculator is prohibited, you must acquire an approved one before your test date. If it’s allowed, you can proceed with confidence. Exploring our guide on the best ACT prep books can also help.
Key Factors That Affect ACT Calculator Eligibility
Several key factors determine whether a calculator is permitted. When you’re trying to figure out **what calculator can I use on the ACT**, look for these specific features.
- Computer Algebra System (CAS): This is the most common reason for a calculator being banned. CAS allows a device to manipulate and solve algebraic expressions, which undermines the test’s purpose.
- QWERTY Keyboard: Any device with a typewriter-style keyboard is forbidden. This prevents the use of devices that are essentially mini-computers.
- Connectivity: Calculators with Wi-Fi, Bluetooth, or any form of internet or inter-device communication are not allowed. This includes smartphones and smartwatches.
- Power Source: A calculator cannot require an electrical outlet to work. It must be battery-operated.
- Noise and Peripherals: Calculators that make noise must be muted. Those with paper tape must have the tape removed.
- Prohibited Model List: The ACT maintains a specific list of banned calculators. Models like the TI-89, TI-92, and HP Prime are explicitly forbidden. Checking this list is a crucial step. It is as important as reviewing your ACT vs SAT choice.
Frequently Asked Questions (FAQ)
1. Can I use my smartphone as a calculator?
No. All smartphones, tablets, laptops, and smartwatches are strictly prohibited from use as calculators on the ACT. This is a firm rule with no exceptions.
2. Is the Texas Instruments TI-84 Plus allowed?
Yes, all versions of the TI-84 Plus, including the Plus CE, are allowed on the ACT because they do not have a Computer Algebra System (CAS). It is one of the most popular choices for students.
3. What’s the difference between a CAS and a non-CAS calculator?
A non-CAS calculator can perform numerical calculations (like 2+2=4). A CAS calculator can work with variables and solve equations symbolically (like solving `2x+3=7` to find `x=2`). This symbolic manipulation capability is what gets CAS calculators banned.
4. What happens if I bring a prohibited calculator to the test?
The test proctor will check your calculator. If it is a prohibited model, you will not be allowed to use it. You will have to take the math test without a calculator, which is possible but can be a significant disadvantage.
5. Do I have to clear the memory on my graphing calculator?
The ACT policy states that calculators with programs or documents containing CAS functionality are prohibited. Test proctors may inspect your calculator and require you to clear any prohibited programs. It is best practice to back up your data and clear your calculator’s memory before the test. For more strategies see our online ACT tutoring resources.
6. Are scientific calculators allowed?
Yes, almost all standard scientific calculators (like the TI-30X or TI-36X Pro) are allowed and are a great choice if you don’t need graphing capabilities.
7. Is the TI-Nspire allowed on the ACT?
This is a tricky one and a perfect example of why checking the exact model is vital. The TI-Nspire CX (non-CAS) is allowed, but the TI-Nspire CX CAS is prohibited. The presence of CAS is the deciding factor.
8. Where can I find the official ACT calculator policy?
The most up-to-date and official policy is always available on the official ACT website. You should always cross-reference any information with the source at ACT.org.
Related Tools and Internal Resources
Continue your ACT preparation with these helpful resources. Understanding topics like **what calculator can I use on the ACT** is just one piece of the puzzle.
- ACT Score Calculator: Estimate your composite score based on your section scores.
- College GPA Calculator: Understand how your grades impact your GPA and college applications.
- Ultimate ACT Prep Guide: A comprehensive guide to studying for every section of the test.