Can You Use 2 Calculators on the ACT?

Your Guide to ACT Calculator Policy and Strategy

ACT Calculator Policy Check

The ACT has specific rules about which calculators are permitted. While you can’t use two calculators simultaneously in a way that provides an unfair advantage, understanding the rules is key. This tool helps you assess calculator compliance.

Common Calculator Policy Violations

Common Prohibited Features

Feature	Reason for Prohibition	Example Devices/Types
Communication Capabilities	Allows data transfer, messaging, or internet access.	Smartphones, Smartwatches, Devices with Wi-Fi/Bluetooth
Computer Algebra Systems (CAS)	Symbolically solves equations, simplifying complex math tasks.	Certain advanced graphing calculators (e.g., TI-Nspire CX CAS, HP Prime)
QWERTY Keyboard / Text Features	Enables writing notes, messages, or extensive programming.	Handheld organizers, PDAs, some advanced calculators
Unauthorized Programming/Apps	Ability to load or run unapproved software or formulas.	Any calculator modified or programmed with disallowed content
Simultaneous Use	Using more than one calculator at a time.	N/A (Policy violation regardless of calculator type)

What is the ACT Calculator Policy?

The ACT calculator policy is designed to ensure a fair testing environment for all students. It specifies the types of calculators that are permitted and, crucially, those that are not. Understanding these guidelines is paramount to avoid any issues on test day. The core principle is that calculators must be basic, scientific, or graphing types that do not offer unfair advantages. This means devices with features like symbolic computation (CAS), text-based input/output (like QWERTY keyboards for notes or messaging), or wireless communication are strictly prohibited. The ACT explicitly states that students may only use one calculator at a time. Attempting to use two calculators simultaneously is a violation of the testing rules, regardless of whether the individual calculators are permitted.

Who should understand this policy? All students planning to take the ACT, especially those in higher-level math courses or who own advanced calculators, need to be familiar with these rules. It’s also important for parents and educators to guide students. Common misconceptions include assuming any calculator used in school is automatically allowed on the ACT, or that having a second calculator “just in case” is acceptable.

ACT Calculator Policy: Key Rules and Prohibitions

The ACT permits the use of most standard calculators, including basic, scientific, and graphing models. However, there are specific features that render a calculator ineligible for use during the ACT exam. These restrictions are in place to maintain the integrity of the test.

Permitted Calculator Features:

• Basic four-function arithmetic (add, subtract, multiply, divide).
• Scientific functions (square roots, exponents, logarithms, trigonometric functions).
• Graphing capabilities (plotting functions, finding intercepts, etc.).
• Simple programming features (as long as they do not perform symbolic math or store extensive text).

Prohibited Calculator Features:

• Computer Algebra Systems (CAS): Calculators that can solve equations symbolically (e.g., simplifying algebraic expressions, solving for variables algebraically) are not allowed. Examples include certain models of TI-Nspire (with CAS) and HP Prime.
• Devices with Full QWERTY Keyboards: Calculators or electronic devices that have a typewriter-style keyboard are prohibited, as they could be used for text-based tasks or storing extensive notes.
• Communication/Connectivity Features: Any calculator that can communicate with other devices or access the internet (e.g., via Bluetooth, Wi-Fi, infrared) is banned. This includes smartphones and smartwatches.
• Handheld Digital Organizers/Electronic Planners: Devices primarily designed for organizing information rather than performing calculations are not permitted.
• Standalone Electronic devices that do not have a calculator function
• Using Two Calculators: The ACT explicitly states, “You may not use more than one calculator at a time.” This rule is absolute.

Formula Explanation: The ACT’s calculator policy is essentially a set of exclusionary rules based on functionality. It defines a permitted set (basic, scientific, graphing without prohibited features) and then lists specific features that disqualify a device. The “two calculator” rule is a separate, overarching policy about testing procedure, not calculator capability.

ACT Calculator Policy Variables:

ACT Calculator Policy Variables

Variable	Meaning	Unit	Typical Range
Calculator Type	General category of the device (Basic, Scientific, Graphing).	Category	Basic, Scientific, Graphing, Other
CAS Feature	Presence of Computer Algebra System.	Boolean (Yes/No)	Yes, No
QWERTY Keyboard	Presence of a full typewriter-style keyboard.	Boolean (Yes/No)	Yes, No
Communication Features	Ability to connect wirelessly or transmit data.	Boolean (Yes/No)	Yes, No
Memory/Storage	Ability to store user-created programs or extensive data.	Boolean (Yes/No)	Yes, No
Simultaneous Use	Using more than one calculator during the test.	Boolean (Yes/No)	No (Policy dictates only one)
Compliance Status	Overall determination of calculator eligibility.	Status	Allowed, Prohibited, Conditional

Practical Examples of ACT Calculator Use

Let’s look at practical scenarios to illustrate the ACT calculator policy. These examples highlight why understanding the nuances is critical for ACT test-takers.

Example 1: Permitted Graphing Calculator

Input:

• Calculator Type: Graphing Calculator
• CAS Feature: No
• QWERTY Keyboard: No
• Communication Features: No
• Memory/Storage: Yes (for storing equations and basic programs)
• Simultaneous Use: No (Using only this one calculator)

Calculation: Based on the inputs, the calculator is a standard graphing model without prohibited features. It is being used individually.

Output:

Interpretation: This calculator is compliant with ACT rules. The student can use it for the Math and Science sections. The presence of memory is acceptable as long as the programs don’t violate other rules.

Example 2: Prohibited Calculator (Advanced)

Input:

• Calculator Type: Graphing Calculator
• CAS Feature: Yes
• QWERTY Keyboard: Yes
• Communication Features: No
• Memory/Storage: Yes
• Simultaneous Use: No (Using only this one calculator)

Calculation: The calculator has both CAS and a QWERTY keyboard, which are explicitly prohibited features.

Output:

Interpretation: This calculator violates the ACT’s policy due to its advanced functions (CAS) and keyboard. The student must use an approved calculator instead.

Example 3: The “Two Calculators” Scenario

Input:

• Calculator Type: Scientific Calculator (Allowed)
• CAS Feature: No
• QWERTY Keyboard: No
• Communication Features: No
• Memory/Storage: No
• Simultaneous Use: Yes (Attempting to use a second allowed calculator alongside the first)

Calculation: Even though both calculators are individually compliant, the act of using two simultaneously violates the ACT’s procedural rules.

Output:

Interpretation: This scenario results in a policy violation. Test proctors will require the student to put away the second calculator. Persistent violation could lead to score cancellation.

How to Use This ACT Calculator Policy Calculator

Our ACT Calculator Policy Calculator is designed to be straightforward. Follow these steps to determine if your calculator is compliant:

1. Select Calculator Type: Choose the general category that best describes your device (Basic, Scientific, Graphing, etc.).
2. Answer Feature Questions: Honestly answer ‘Yes’ or ‘No’ to questions about CAS, QWERTY keyboards, communication capabilities, and memory/storage features.
3. Check Compliance: Click the “Check Compliance” button.

Reading the Results:

• Main Result: Indicates “Allowed” or “Prohibited” clearly.
• Compliance Level: Provides a more detailed status (e.g., Fully Permitted, Not Allowed).
• Reasoning: Explains *why* the calculator is allowed or prohibited, citing specific features.
• Note: Offers important reminders or specific advice.

Decision-Making Guidance: If your calculator is deemed “Prohibited,” you must find an approved alternative before test day. Relying solely on this calculator could lead to disqualification from using any calculator during the test. If it’s “Allowed,” ensure it’s the only one you bring and use. Remember, the ACT policy prioritizes fairness; advanced features that bypass standard problem-solving methods are disallowed.

Key Factors Affecting ACT Calculator Results

Several factors influence whether a calculator is permitted on the ACT. Understanding these can help you choose or prepare your device correctly.

1. Presence of CAS: This is a major red flag. Calculators that perform symbolic algebra are almost always banned. Double-check your model’s specifications.
2. Communication Abilities: Any form of wireless connectivity (Bluetooth, Wi-Fi, cellular) or data port intended for communication disqualifies a calculator. This includes smartphones and smartwatches.
3. Keyboard Type: While calculators have keys, a full QWERTY (typewriter-style) keyboard suggests capabilities beyond standard calculations, such as text editing or programming, which are restricted.
4. Memory and Programming: While some memory is usually allowed for storing equations or simple routines, extensive storage for programs, notes, or textbook content is prohibited. The line can be blurry, so erring on the side of caution is wise.
5. Device Category: The ACT categorizes devices. If your device is primarily a smartphone, tablet, or organizer, it’s likely banned, even if it has a calculator app.
6. Simultaneous Use: This is a procedural rule. Bringing and attempting to use two calculators, even if both are individually compliant, is a direct violation. You must choose one.
7. Firmware/Software: Even if a calculator model is generally allowed, any unauthorized modifications, firmware updates, or loaded software that introduces prohibited features will make it non-compliant.
8. Test Center Enforcement: Ultimately, ACT proctors have the final say. While this calculator provides guidance based on official rules, a proctor’s interpretation on test day is binding.

Frequently Asked Questions (FAQ)

Can I use my smartphone as a calculator on the ACT?

No. Smartphones are prohibited electronic devices during the ACT, even if used solely for their calculator function. They possess communication features and other capabilities beyond approved calculators.

Is a TI-84 Plus allowed on the ACT?

Yes, the standard TI-84 Plus (without TI-84 Plus Smart/T discoverable apps) is generally permitted as it functions as a standard graphing calculator and typically lacks prohibited features like CAS or a QWERTY keyboard. Always check the latest ACT guidelines for specific model exceptions.

What about the TI-Nspire CX CAS?

No, the TI-Nspire CX CAS is generally prohibited because it includes a Computer Algebra System (CAS), which allows for symbolic manipulation of equations. The non-CAS version of the TI-Nspire might be allowed, but verify.

Can I bring two calculators just in case one runs out of batteries?

No. The ACT explicitly states you may only use one calculator at a time. While bringing a backup is wise, you must only have one accessible during the testing session. You’ll need to store the backup away from your testing station.

What if my calculator has a “solver” function?

This depends. If the “solver” function performs numerical solving (finding approximate roots) it might be allowed. If it performs symbolic solving (algebraic manipulation), it’s likely prohibited under the CAS rule. Consult the ACT’s official list or err on the side of caution.

Are scientific calculators allowed?

Yes, most standard scientific calculators are allowed on the ACT, provided they do not have prohibited features like CAS, QWERTY keyboards, or communication capabilities.

What should I do if my calculator is prohibited?

You must use an approved calculator. Borrow one from a friend or school, or purchase a basic scientific or graphing calculator known to be compliant. Do not wait until test day to figure this out! Using a prohibited device can lead to your test being invalidated.

Does the ACT provide calculators?

No, the ACT does not provide calculators. Students are responsible for bringing their own approved calculator.

Can I use a calculator app on a graphing calculator if it’s not built-in?

This is risky. If the app introduces CAS, QWERTY, or communication features, it would likely be prohibited. Stick to the calculator’s native, approved functions. If unsure, it’s best to use a simpler, guaranteed-compliant model.