PSAT Calculator Permissibility Checker

Determine if your calculator is allowed for use on the PSAT/NMSQT Math Test.

What are the calculators you can use on the PSAT?

Understanding the official calculator policy is crucial for a smooth test day experience. The College Board, which administers the PSAT/NMSQT, has specific rules about which calculators are permitted during the Math Test – Calculator portion. While a calculator is not required to solve any question, it is highly recommended, and using a familiar and approved device can be a significant advantage. Students can either bring their own approved calculator or use the graphing calculator built into the digital testing app (Bluebook), which is a version of the Desmos calculator.

The Official PSAT Calculator Formula and Explanation

There isn’t a mathematical formula for the policy, but a logical one based on features. The core rule is: your calculator must NOT have a Computer Algebra System (CAS). A CAS can manipulate algebraic expressions symbolically, which provides an unfair advantage. For example, a CAS calculator can solve `x^2 – 4 = 0` and give you `x=2, x=-2`, while a non-CAS calculator can only find the numerical answer.

Besides the CAS restriction, other prohibited features include QWERTY keyboards, wireless communication, the need for a power outlet, and smartphone-like capabilities.

Calculator Feature Policy

Feature/Variable	Meaning	Permitted Status	Typical Range/Examples
Calculator Type	The general category of the calculator.	Graphing, Scientific, Four-Function	TI-84 Plus (Graphing), Casio FX-115ES (Scientific)
CAS Functionality	Ability to perform symbolic algebra.	No	Banned: TI-89, HP Prime, TI-Nspire CAS
QWERTY Keyboard	A typewriter-style keyboard.	No	Any device with a full alphabet keyboard.
Power Source	How the calculator is powered.	Battery or Solar Only	Prohibited: Calculators requiring an electrical outlet.
Connectivity	Ability to connect to other devices or the internet.	No	Banned: Bluetooth, Wi-Fi, Infrared (unless port is taped).

Practical Examples

Example 1: A Permitted Calculator

• Input Model: “TI-84 Plus”
• Analysis: This model is a standard graphing calculator. It does not have a CAS, a QWERTY keyboard, or wireless capabilities. It is explicitly listed as an acceptable calculator for the PSAT.
• Result: ✅ Permitted.

Example 2: A Prohibited Calculator

• Input Model: “TI-89 Titanium”
• Analysis: This model contains “CAS” capabilities and is explicitly listed by the College Board as a prohibited calculator. Even without the name, its ability to solve symbolic equations disqualifies it.
• Result: ❌ Not Permitted.

How to Use This PSAT Calculator Checker

Using this tool is straightforward and can save you from a major headache on test day. Follow these simple steps:

1. Enter Model: Type your calculator’s model name into the input field above. Be as precise as possible.
2. Check Eligibility: Click the “Check Eligibility” button.
3. Interpret Results: The tool will provide one of three outcomes:
   • Permitted: Your calculator is on the known-approved list.
   • Not Permitted: Your calculator is on the known-prohibited list due to features like CAS.
   • Check Carefully: Your model isn’t on our specific lists. You must manually verify it doesn’t have prohibited features like a QWERTY keyboard or CAS. When in doubt, check the official College Board calculator policy.
4. Review Feature Chart: The table below the result will dynamically update to show an analysis of the key features based on the model you entered.

Key Factors That Affect PSAT Calculator Legality

1. CAS (Computer Algebra System): This is the most common reason for a calculator to be banned. If the model name includes “CAS,” it’s not allowed.
2. QWERTY Keyboard: No calculators with typewriter-style keyboards are permitted.
3. Internet/Wireless Access: Any device that can communicate wirelessly (Bluetooth, Wi-Fi) is strictly forbidden.
4. Power Source: The calculator must be battery-operated. Models that need to be plugged in are not allowed.
5. Stylus/Pen-Input: Most devices requiring a stylus are prohibited.
6. Noise and Tapes: Calculators that make noise or print to a paper tape cannot be used.

Frequently Asked Questions (FAQ)

1. Can I use my phone as a calculator?

No. Smartphones, tablets, and computers are strictly prohibited.

2. What happens if my calculator is not on any official list?

If your calculator is not explicitly listed as approved or banned, you are responsible for ensuring it meets the criteria. It must not have CAS, a QWERTY keyboard, or any other prohibited feature. When in doubt, bring a different, clearly approved calculator. You can refer to this comprehensive list of SAT calculators for more guidance.

3. Is the TI-Nspire allowed?

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

4. Do I have to use the built-in Desmos calculator?

No, you can bring your own approved handheld calculator. The College Board recommends using the calculator you are most familiar with.

5. What is the difference between a scientific and a graphing calculator?

A scientific calculator can handle trigonometric functions, logarithms, and exponents. A graphing calculator can do all that plus plot equations on a coordinate plane. Both are allowed as long as they are non-CAS models. For more details, see this guide on different calculator types.

6. What happens if I bring a banned calculator to the test?

The test proctor will not allow you to use it. You would have to take the Math Test – Calculator portion without a calculator, which is a significant disadvantage.

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

Yes, you should remove any stored programs, notes, or documents from your calculator before test day. Proctors may inspect your calculator, and having stored information could lead to your dismissal.

8. Where can I find the official list of calculators you can use on the PSAT?

The most up-to-date policy is always on the College Board’s official website. You should always double-check there before your test. This test prep resource also has useful information.

Related Tools and Internal Resources

Once you’ve confirmed you have one of the calculators you can use on the psat, make sure you’re ready for the test itself. Check out these related resources: