Allowed Sat Calculators

Instantly verify if your calculator model is permitted for use on the SAT test.

What Are Allowed SAT Calculators?

Allowed SAT calculators are specific handheld devices approved by the College Board for use on the Math section of the SAT. The policy is designed to ensure fairness and prevent any student from having an unfair technological advantage. While you can use the built-in Desmos graphing calculator in the Bluebook testing app, you are also permitted to bring your own device. Generally, most graphing calculators, all scientific calculators, and all four-function calculators are acceptable, provided they do not have prohibited features.

Common misunderstandings often involve Computer Algebra Systems (CAS). A key rule is that calculators with CAS functionality are strictly prohibited. It’s critical to check if your calculator model includes CAS, as this is a common reason for a device to be banned. Another point of confusion is the use of scientific calculators; to be clear, all scientific calculators are permitted as long as they don’t fall into a prohibited category (like having a QWERTY keyboard).

SAT Calculator Policy Rules

Instead of a mathematical formula, the “calculation” for whether a device is an allowed SAT calculator is based on a set of rules. Your device is checked against a list of prohibited features. If it has any of these features, it is not allowed.

Core rules for determining if a calculator is prohibited.

Prohibited Feature	Meaning & Explanation	Common Examples
Computer Algebra System (CAS)	The calculator can solve equations or manipulate variables symbolically (e.g., factor x²-1 into (x-1)(x+1)). These are banned. Many models have “CAS” in their name.	TI-89, TI-Nspire CAS, HP Prime, Casio ClassPad
QWERTY Keyboard	Any device with a computer-style keyboard (like a laptop or phone) is not allowed.	Laptops, tablets, phones
Wireless Communication	Calculators with Wi-Fi, Bluetooth, or any form of internet or wireless connectivity are prohibited.	Smartphones, smartwatches
Power Cord / Electrical Outlet	The calculator must be battery-operated. Devices that need to be plugged into an electrical outlet are not permitted.	–
Stylus or Pen Input	Devices that require a stylus for operation are banned. Note: The Casio FX-CG500 is prohibited for this reason.	Casio ClassPad series, Sharp EL-9600 (stylus use not permitted)
Noise or Audio/Video	Any device that makes noise, has a camera, or can play/record audio or video is prohibited.	–

Practical Examples

Example 1: Checking a Common Graphing Calculator

• Input: TI-84 Plus CE
• Analysis: This model is one of the most common allowed SAT calculators. It does not have a CAS, a QWERTY keyboard, or any other prohibited features.
• Result: ALLOWED

Example 2: Checking a Prohibited CAS Calculator

• Input: TI-89 Titanium
• Analysis: The “TI-89” series is explicitly listed by the College Board as a prohibited model because it contains a powerful Computer Algebra System (CAS).
• Result: PROHIBITED

Example 3: Checking a Scientific Calculator

• Input: TI-30XS MultiView
• Analysis: This is a scientific calculator. The official policy states that all scientific calculators are permitted unless they have a specific prohibited feature (which this one does not).
• Result: ALLOWED

How to Use This Allowed SAT Calculators Checker

Follow these simple steps to determine if your calculator is ready for test day.

1. Find Your Calculator’s Model Name: Look at the top of your calculator. The model is usually printed clearly (e.g., “TI-84 Plus”, “Casio fx-115ES PLUS”).
2. Enter the Model Name: Type the full model name into the input field above.
3. Click “Check My Calculator”: Our tool will instantly analyze your input against the College Board’s known rules and lists.
4. Interpret the Results:
   • ALLOWED: Your calculator is permitted.
   • PROHIBITED: Your calculator is on the banned list. The reason will be provided.
   • UNCERTAIN: The model was not found in our lists. You must manually check it against the prohibited feature rules above.

Key Factors That Affect Calculator Allowance

Several key features determine if a calculator is allowed on the SAT. Understanding these will help you choose the right tool.

• CAS (Computer Algebra System): This is the most common reason for a graphing calculator to be banned. CAS allows symbolic manipulation, which is considered an unfair advantage.
• QWERTY Keyboard: Any calculator with a typewriter-style keyboard is prohibited as it resembles a computer.
• Wireless Capability: Devices with Bluetooth, Wi-Fi, or cellular access are strictly forbidden to prevent cheating.
• Power Source: Calculators must be battery-powered. You cannot use a device that needs to be plugged in.
• Stylus/Pen Input: Touchscreen calculators that use a stylus are generally prohibited.
• Brand and Model Series: The College Board explicitly lists certain model series as prohibited, such as the TI-89 and TI-92, HP Prime, and specific Casio ClassPad models.

Frequently Asked Questions (FAQ)

1. Are all scientific calculators allowed on the SAT?

Yes, the College Board states that all scientific calculators are permitted, as long as they don’t have any of the specifically prohibited features like a QWERTY keyboard or wireless communication.

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

If you are caught using a prohibited calculator, you will be dismissed from the test, and your scores will be canceled. It is your responsibility to bring an approved device.

3. Can I use my phone’s calculator or a smartwatch?

No. Smartphones, smartwatches, laptops, tablets, and any other similar electronic devices are strictly prohibited.

4. What is a “CAS” calculator?

CAS stands for Computer Algebra System. It’s a feature that lets a calculator process and simplify algebraic expressions with variables, rather than just computing with numbers. For example, it can solve for ‘x’ in an equation. This functionality is banned on the SAT.

5. Do I need to clear my calculator’s memory?

Yes, the policy requires that you remove any stored documents and programs that have algebra functionality from your calculator before the test.

6. What if my calculator model isn’t on any official list?

If your calculator is not on the prohibited list, check it against the list of prohibited features. As long as it doesn’t have CAS, a QWERTY keyboard, wireless, etc., it is likely an allowed SAT calculator. Four-function and scientific calculators are generally safe bets.

7. Is a graphing calculator necessary for the SAT?

No, it is not required. The digital SAT includes an embedded Desmos graphing calculator. However, you may be faster and more comfortable using your own familiar, approved handheld calculator.

8. Can I share my calculator with another student?

No. Sharing calculators during the exam is strictly prohibited. You must bring your own device.