SAT® Calculator Acceptability Checker

Instantly determine if your calculator is allowed on the SAT® exam.

Check Your Calculator’s Status

What is an Acceptable Calculator for the SAT?

An acceptable calculator for the SAT is any device that meets the specific guidelines set by the College Board, the organization that administers the test. While a calculator is not required, it is highly recommended. The policy is designed to ensure fairness and prevent any student from having an unfair advantage. Generally, most graphing calculators, all scientific calculators, and all four-function calculators are permitted. However, the most critical rule is that calculators with a Computer Algebra System (CAS) are strictly prohibited. This tool helps you quickly check if your model is likely to be considered an acceptable calculator for the SAT.

You can either use the built-in Desmos graphing calculator provided in the Bluebook testing application or bring your own approved handheld device. Knowing your calculator is approved beforehand saves you from stress and potential issues on test day.

SAT Calculator Rules Overview

The “formula” for determining if a calculator is acceptable is a set of rules, not a mathematical equation. The core principle revolves around specific prohibited features. Your device will be checked by the proctor on test day.

Summary of College Board Calculator Policy Rules.

Feature/Rule	Status	Explanation
Computer Algebra System (CAS)	Prohibited	Calculators that can symbolically manipulate expressions (e.g., factor, solve for variables) are not allowed. Models often have “CAS” in their name.
Graphing Capability	Permitted	Most graphing calculators are allowed, as long as they do not have CAS. Models like the TI-84 family are very popular.
Scientific & Four-Function	Permitted	All scientific and basic four-function calculators are allowed.
QWERTY Keyboard	Prohibited	Any device with a typewriter-style keyboard is not allowed.
Internet/Wireless Access	Prohibited	Calculators must not be able to connect to the internet or any other device. This includes phones, smartwatches, and laptops.
Power Cords / Electrical Outlet	Prohibited	Calculators must be battery-operated. You cannot plug your device into an outlet during the exam.
Infrared Data Port	Must be Covered	If your calculator has an infrared port, it must be covered with tape.

For more detailed information, consider reading about the SAT calculator policy.

Practical Examples

Example 1: Checking a Common Graphing Calculator

• Input: TI-84 Plus CE
• Analysis: This model is a standard graphing calculator and does not have a CAS. It is widely used by students.
• Result: ✅ Permitted. This is a perfect example of what is an acceptable calculator for the SAT.

Example 2: Checking a Prohibited CAS Calculator

• Input: TI-Nspire CX II CAS
• Analysis: The “CAS” in the model name explicitly indicates it has a Computer Algebra System.
• Result: ❌ Not Permitted. The College Board has banned all CAS calculators.

Example 3: Checking a Vague Model

• Input: Casio Graphing
• Analysis: This input is too general. While many Casio graphing calculators are allowed, some are not (e.g., models starting with CFX-9970G or the ClassPad series).
• Result: ⚠️ Uncertain. The tool would advise the user to enter a more specific model number to get a definitive answer.

How to Use This Acceptability Calculator

Using this tool is straightforward. Follow these steps to determine if you have an acceptable calculator for the SAT.

1. Find Your Model Name: Look at the front of your calculator. The model is usually printed at the top (e.g., TI-83 Plus, HP Prime).
2. Enter the Model: Type the full model name into the input field above.
3. Check the Status: Click the “Check Status” button.
4. Review the Result: The tool will instantly tell you if the calculator is Permitted, Not Permitted, or if the status is Uncertain (requiring a more specific model name). The reason for the status will be provided.

If you need practice, check out these SAT math practice questions to get comfortable using your device.

Key Factors That Affect Calculator Acceptance

Several key features determine a calculator’s eligibility for the SAT. Understanding these will help you know what to look for.

• CAS Functionality: This is the number one disqualifying feature. A CAS can solve algebraic equations, which provides a significant advantage and is therefore banned.
• QWERTY Keyboard: Any calculator with a keyboard layout like a computer is prohibited as it could be used to store text.
• Connectivity: Any form of communication (Wi-Fi, Bluetooth, Infrared) is forbidden. This is why phones and smartwatches are not allowed.
• Power Source: The device must run on batteries. No plug-in devices are permitted to ensure fairness and logistical simplicity.
• Unusual Displays: Calculators with very large or raised displays might require you to be seated in a specific location by the proctor to prevent others from seeing your screen.
• Noise and Printing: Devices that make noise or print to paper tape are not allowed as they can disrupt the testing environment.

For a full rundown of devices, see this list of SAT approved graphing calculators.

Frequently Asked Questions (FAQ)

1. What happens if I bring a prohibited calculator to the test?

The test proctor will not allow you to use it. You will have to take the Math section without a calculator, which can put you at a significant disadvantage. It’s crucial to check your calculator’s status beforehand.

2. Is the TI-84 Plus allowed on the SAT?

Yes, the TI-84 Plus family of calculators (including the Plus, CE, and Silver editions) are all explicitly allowed as they are non-CAS graphing calculators.

3. Do I have to use a calculator on the SAT?

No, a calculator is not required. However, it is strongly recommended as some questions are designed to be solved much more quickly with one. You will also have access to the Desmos calculator built into the testing software.

4. Are all scientific calculators allowed?

Yes, the College Board states that all scientific calculators are acceptable. The primary restrictions are on graphing calculators with specific features.

5. Why are CAS calculators banned?

CAS calculators are banned to ensure a level playing field. These devices can perform advanced algebraic manipulations that the test is designed to measure, giving users an unfair advantage over those without such a device.

6. Can I use my phone as a calculator?

No. Phones, tablets, laptops, smartwatches, or any device with internet or communication capabilities are strictly prohibited.

7. What is the difference between a TI-Nspire CX and a TI-Nspire CX CAS?

The TI-Nspire CX is a permitted graphing calculator. The “CAS” version, however, includes a Computer Algebra System and is therefore banned from the SAT. You must use the non-CAS model.

8. Do I need to clear the memory on my calculator?

The College Board requires you to remove any stored documents or programs with algebra functionality. It is good practice to clear your calculator’s memory before the test to be safe.