Key takeaways:
- All math questions on the ACT can be solved without a calculator, but some are tedious and complicated.
- You are allowed to bring 4-function, graphing, and scientific calculators to the ACT, or you can use the built-in calculator for the online exam at testing centers.
- You are not allowed to use calculators with computer algebra systems, cell phones, or laptops.
Flickr user Chris Chan
While you technically don’t need a calculator on the ACT – you can solve all of the ACT math problems without one – you’d be putting yourself at a disadvantage by not bringing one. Some questions are very complicated and solving them without a calculator takes time. When each minute counts, you don’t want to spend too long on each question. However, you want to be sure you’re bringing an approved calculator to your ACT. Here’s a look at what’s allowed and not allowed on the ACT, plus some advice for getting prepared for using your calculator on the standardized test.
What calculators are allowed on the ACT?
You are allowed to bring bring one of these calculators to the ACT:
- 4-function calculators can handle basic math problems, including addition, subtraction, multiplication, and division.
- Graphing calculators help you plot graphs, complete trigonometry questions, analyze data, and more.
- Scientific calculator features vary by model, but they can assist with scientific notation, probability, statistics, and more.
For the online ACT, you can bring your own approved calculator or use the built-in application on the exam at testing centers.
What calculators are not allowed on the ACT?
Some calculators are prohibited on the ACT, including:
- Texas Instruments models TI-89, TI-92, and TI-Nspire CAS
- Hewlett-Packard (HP) models Prime, 48GII, 40G, 49G, and 50G
- Casio models fx-CP400, ClassPad 300, ClassPad 330, Algebra fx 2.0, CFX-9970G
- Calculators with built-in or downloadable computer algebra systems (CAS)
- Most electronic writing pads/pen-input
- Calculators on cell phones, laptops, tablets, or other communication devices
- Calculators with QWERTY keyboards
Some calculators can be used if you take certain precautions, such as removing CAS programs ahead of time. You can only bring accessible calculators, such as Braille calculators, if you’ve been approved for accommodations through the ACT.
Always check the ACT.org website for up-to-date lists of approved and prohibited calculators ahead of your test day. You are not allowed to share calculators.
Get prepared for test day
Even if you have an approved calculator, you still need to get it ready for test day. Here are some things to do and check for:
- Prepare your calculator. Clear any CAS programs and documents, remove paper tape and power cords, and turn off sound. Cover infrared data ports (if any) with duct tape or electrician’s tape.
- Plan ahead. Charge your calculator’s battery or add new ones the night before your ACT. Consider bringing a backup and extra batteries.
- Get familiar with your calculator. Don’t use a calculator for the first time on your test day – it can slow you down. Take a few practice ACT exams with it to get comfortable.
You don’t want to bring down your ACT Math score because you didn’t bring an approved calculator! Keep an eye on the ACT website to make sure your calculator isn’t prohibited and study with it regularly to get comfortable with its functions. It will make a difference!
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