coop · 10 min read · easy
Graphing Calculator Buying Guide 2026
A calculator is the most expensive single item in your math toolkit. Pick wrong and you spend $130 on a brick the SAT will not let you use. Pick right and the same device gets you through senior year of college.
The TI-84 Plus CE: Default Choice
$120-150. Allowed on SAT, ACT, AP Calculus, AP Stats, IB, and almost all classroom tests. Battery life on lithium model is excellent. Software is dated but every teacher knows it cold and tutorials are everywhere on YouTube. If you only buy one calculator: this one.
The TI-Nspire CX II CAS: Power User Pick
$170-200. CAS (Computer Algebra System) does symbolic math — solves equations algebraically, not just numerically. CRITICAL: the CAS version is BANNED on the ACT and the IB Math AA SL. The non-CAS Nspire CX II is allowed everywhere the TI-84 is. Only buy CAS if you know your tests permit it.
Casio fx-CG50 PRIZM
$60-90. Colour screen, faster than TI-84, half the price, allowed on the same exams. Smaller user base means fewer YouTube tutorials. Excellent value if you can self-teach the menus.
HP Prime
$130-160. Best hardware (touchscreen, fast CAS). Banned on ACT (it has CAS). Niche following — pick only if you specifically want the HP RPN heritage.
When NOT to buy a graphing calculator
If you are heading to a CS or data-science career, Python + NumPy + Jupyter will replace any calculator after freshman year. Buy the TI-84 for the high school exams that require it, then put it in a drawer.
Shop Recommended Books & Courses
Editor-vetted picks for recommended books & courses — textbooks, workbooks, and interactive courses.
Affiliate links — we may earn a small commission at no cost to you. Disclosure.