The ACT allows most graphing, scientific, and four-function calculators, but prohibits those with CAS (computer algebra system) features, paper tapes, or built-in communication tools. Graphing calculators like the TI-84 Plus CE are the most recommended for their speed, graphing capabilities, and familiarity among test-takers. Scientific calculators such as the TI-36X Pro or Casio fx-115ES Plus work well for non-graphing needs and are more affordable.
Top Recommendations
- TI-84 Plus CE : Features a color screen, rechargeable battery, fast fraction and matrix functions, ideal for ACT math visualization.
- TI-Nspire CX (non-CAS) : Advanced but user-friendly for graphs and data; avoid CAS versions as they are banned.
- Casio fx-115ES Plus or TI-30XS MultiView : Reliable scientific options for equations and stats without graphing.
Prohibited Models
Models like TI-89, TI-Nspire CX CAS, or TI-92 are not allowed due to advanced symbolic math features. Always check the official ACT site for the latest approved list before test day, as policies apply to both in-person and online formats. Practice extensively with your chosen calculator to maximize efficiency on the 60-minute math section.
