SAT Calculator Permissibility Checker

An instant tool to determine what calculators are allowed on the SAT based on the official College Board policy.

Check Your Calculator’s Status

What is the SAT Calculator Policy?

The SAT Calculator Policy outlines the rules for using calculators during the SAT exam. Understanding this policy is crucial, as bringing a prohibited device can lead to dismissal from the test. For the Digital SAT, a graphing calculator is built into the testing app (Bluebook™), but students are still permitted to bring their own approved calculator. The policy ensures fairness by standardizing the tools available to test-takers. Essentially, any four-function, scientific, or graphing calculator is allowed, provided it is not on the specific list of prohibited devices and does not have forbidden features.

SAT Calculator Rules and Explanation

The core principle of the SAT calculator policy is to allow most devices that perform mathematical calculations without providing an unfair advantage. The rules are less about specific “allowed” models and more about “prohibited” features. If a calculator has any of these features, it is not allowed.

Key Prohibited Features:

• Devices with a computer-style (QWERTY) keyboard.
• Calculators with wireless communication, Bluetooth, or internet access.
• Devices that require an electrical outlet to function.
• Calculators that make noise, have a paper tape, or can record audio/video.
• Cell phones, tablets, smartwatches, and laptops are strictly forbidden.
• Models with stylus or pen-input functionality.
• Crucially, calculators with a built-in Computer Algebra System (CAS) are prohibited. This is a major rule change. CAS can perform symbolic algebra, like factoring and solving equations, which is now deemed an unfair advantage.

SAT Calculator Variables Table

This table explains the key attributes that determine if a calculator is allowed.

Variable	Meaning	Unit (Status)	Typical Range for Allowed Calculators
CAS Functionality	Computer Algebra System	Boolean (Yes/No)	Must be ‘No’. Models with ‘CAS’ in their name are prohibited.
Keyboard Type	The layout of the keys	Text (QWERTY/Standard)	Must be ‘Standard’. QWERTY is prohibited.
Wireless Capability	Ability to connect to other devices or internet	Boolean (Yes/No)	Must be ‘No’. Wi-Fi, Bluetooth, and cellular are prohibited.
Power Source	How the calculator is powered	Text (Battery/Outlet)	Must be ‘Battery’. No power cords allowed.

Practical Examples

Example 1: The TI-84 Plus

A student has a Texas Instruments TI-84 Plus. They enter “TI-84 Plus” into the calculator.

• Input: TI-84 Plus
• Analysis: The checker’s logic confirms this model is a standard graphing calculator. It does not have a QWERTY keyboard, it is battery-powered, and most importantly, it does not have CAS functionality.
• Result: ✅ Allowed. This is one of the most common and recommended calculators for the SAT.

Example 2: The TI-Nspire CX II CAS

Another student has a Texas Instruments TI-Nspire CX II CAS.

• Input: TI-Nspire CX II CAS
• Analysis: The checker identifies the “CAS” in the model name. A Computer Algebra System is explicitly prohibited by the College Board.
• Result: ❌ Prohibited. Even though the non-CAS version (the TI-Nspire CX II) is allowed, the presence of CAS makes this specific model forbidden.

How to Use This SAT Calculator Checker

Using our tool is simple and designed to give you a quick, reliable answer.

1. Find Your Model Number: Look at the front of your calculator. The model number is usually printed clearly at the top.
2. Enter the Model: Type the full model number into the input field above. Precision helps get the most accurate result.
3. Check the Status: Click the “Check Status” button.
4. Interpret the Result: The tool will show if your calculator is likely Allowed, Prohibited, or if you should use caution. The result is based on the latest SAT calculator policy. If your model isn’t in our database, the tool will provide general guidance based on prohibited features.

Key Factors That Affect SAT Calculator Permissibility

• Computer Algebra System (CAS): This is the biggest factor. If your calculator can manipulate variables and solve algebraic equations symbolically (e.g., solve x^2-a=0 for x), it’s prohibited.
• QWERTY Keyboard: Any calculator with a typewriter-style keyboard is banned.
• Connectivity: Any form of wireless communication (infrared, Bluetooth, Wi-Fi) is grounds for disqualification.
• Power Source: Calculators must be battery-operated. Models that need to be plugged in are not allowed.
• Stylus/Touch Screen: Devices that use a stylus or have certain touch screen capabilities (like the Casio ClassPad) are prohibited.
• External Devices: Laptops, mobile phones, smartwatches, or any other computing devices are strictly forbidden.

Frequently Asked Questions (FAQ)

1. Can I use the calculator on the entire SAT?

On the Digital SAT, you can use a calculator on the entire Math section. However, it is not permitted on the Reading and Writing section.

2. What happens if I bring a prohibited calculator?

The test proctor will not allow you to use it. You may have to take the math test without a calculator, or you could be dismissed from the test center and have your scores canceled.

3. Is the TI-Nspire allowed on the SAT?

It depends. The standard TI-Nspire CX and CX II models are allowed. However, the TI-Nspire CAS and TI-Nspire CX II CAS models are prohibited because they contain a Computer Algebra System.

4. Do I need to buy a graphing calculator?

It’s not required. All scientific calculators are permitted, and the digital SAT includes a powerful built-in Desmos graphing calculator. However, many students prefer using a handheld calculator they are familiar with.

5. Can I use my phone as a calculator?

No. Phones, smartwatches, tablets, and laptops are strictly prohibited.

6. What is a Computer Algebra System (CAS)?

A CAS is a sophisticated program that can perform symbolic math, such as simplifying expressions, factoring polynomials, and solving algebraic equations. This functionality is considered an unfair advantage and is banned.

7. Are there changes to the policy for the Digital SAT?

Yes, the biggest change is that a calculator is now permitted on all math sections. The Digital SAT also provides a built-in Desmos calculator for all students.

8. What’s the difference between the TI-84 Plus and the TI-89?

The TI-84 Plus is a standard graphing calculator and is allowed. The TI-89 has a CAS built-in and is therefore prohibited on the SAT.