What counts as an ACT accepted calculator and why it matters
The ACT maintains an official list of ACT accepted calculators, and choosing a compliant model is essential for test day. Calculators that violate rules on advanced functions can be confiscated, leading to lost time and unnecessary stress. In the opening explanation, the core point is simple: bring only a calculator that the ACT explicitly allows, preconfigured for your use, and you will avoid disruptions. This guide explains the rules, compares popular approved models, and helps you pick and set up a reliable calculator long before test day.
Official ACT calculator policy basics
The ACT publishes a calculator policy that defines which models and features are permitted. Acceptable devices include most basic, scientific, and graphing calculators, provided they do not include prohibited technologies. You are responsible for ensuring your device matches the current rules, which can change slightly over time. Key restrictions focus on devices with QWERTY keyboards, wireless communication, computer algebra systems, and stylus or pen input. Understanding the official policy helps you arrive on test day with a compliant, ready-to-use calculator.
Prohibited features to avoid
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- QWERTY keyboard layout
- Wireless or Bluetooth connectivity
- Built-in computer algebra systems (CAS)
- Pen or stylus input
- Camera or scanning functions
- Voice synthesis or communication features
How to check the current list of ACT accepted calculators
Because the ACT updates its policies infrequently but without a fixed schedule, treat every version of this guidance as a snapshot tied to your test date. The definitive resource is the official ACT calculator page, linked from act.org on the test date and maintained in the months leading up to it. When you verify your device, compare its make and model, along with its features, against the latest published list. Rely on primary sources rather than summaries or anecdotes, since small differences in model numbers matter.
Popular calculator brands and specific models that are generally accepted
Many widely sold calculators are acceptable, but you must still confirm exact model compliance and test-day settings. The brands below commonly include ACT approved models, with important caveats for higher-end devices that may offer CAS or other restricted functions. Below is a comparison of representative approved models, estimated prices, and notable characteristics to help you decide.
Comparison of commonly allowed calculators
| Calculator model | Type | Verified acceptability notes | Approximate price (USD) | Best use case |
|---|---|---|---|---|
| TI-30XS MultiView | Scientific | Approved; simple interface, no CAS or wireless | 15–25 | Everyday calculations and formulas |
| TI-36X Pro | Scientific | Accepted in most recent policy checks; confirm current model number | 30–45 | More advanced scientific functions |
| Casio fx-9750GII | Graphing | Generally allowed; must be in graphing mode, no CAS | 50–70 | Graphing and programming practice |
| Casio fx-CG50 | Color graphing | Allowed only without CAS features enabled; check firmware | 100–130 | Color graphing and dynamic math |
| NumWorks | Graphing | Accepted in many jurisdictions when configured correctly | 80–110 | Open-source interface and Python support |
Prep and setup steps before test day
Having an accepted calculator is not enough; you must configure it properly and practice with it. Remove or disable any apps, custom fonts, or connectivity features that could be misinterpreted as prohibited functions. Bring fresh batteries and consider a backup calculator in case of malfunction. Practice entering formulas and navigating menus so you are comfortable with keystrokes and menu paths during the test. A well-prepared calculator strategy reduces friction on test day.
Quick setup checklist
- Confirm the exact model number matches the current ACT accepted list
- Update or roll back firmware to remove CAS or wireless features if needed
- Clear apps, notes, and programs that are not needed for the test
- Set calculator to required mode, such as radians or degrees, in advance
- Practice with the device using official ACT practice problems
- Bring a spare, verified calculator and its batteries
Test day logistics and usage tips
On test day, place your calculator in a visible part of your workspace and use it only during permitted sections. If proctors inspect devices, be ready to demonstrate that your calculator matches the accepted list and has no active wireless or CAS features. Use your calculator strategically for arithmetic, graphing, or table operations, but continue to show key steps for problem-solving when required. These habits help ensure a smooth testing experience.
When policy changes and how to stay updated
The ACT occasionally revises its rules, so check the official calculator list close to your registration date and again no later than one week before the test. Small clarifications or model-specific updates are more common than major overhauls. Treat past policies as informative but always confirm current rules using act.org and official guidance documents. Staying current minimizes surprises and supports a confident test experience.