The wrong graphing calculator can get you disqualified from an exam — even if you bought it legally. Here’s which calculators are allowed for each major exam, and which model is worth your money for each field of study.
Which Calculators Are Allowed on Each Major Exam
Insight propio: Compiled from College Board, ACT, ETS (GRE), and MCAT exam policies as of January 2026. Always verify with the official exam body before test day.
| Exam | Allowed Calculators | Key Notes |
|---|---|---|
| SAT | Most graphing calculators | TI-84 Plus CE approved; CAS allowed on Math section |
| AP Calculus AB/BC | Approved graphing calculators only | TI-84 Plus, TI-Nspire (non-CAS), Casio fx-9750GIII all approved |
| AP Statistics | Graphing calculators required | TI-84 Plus CE is standard for most AP Stats courses |
| ACT Math | Most calculators (no CAS, no phone apps) | TI-84 Plus CE approved |
| GRE | On-screen calculator provided | No personal calculator allowed |
| MCAT | No calculator allowed | Mental math and estimation only |
| College exams (most) | Professor-specific | Ask professor directly — policies vary by course |
Best Graphing Calculators in 2026
1. TI-84 Plus CE — The Universal Standard
Price: ~$110–$130 | Best for: High school AP, SAT, ACT, introductory college math and science
The TI-84 Plus CE is the closest thing to a universal standard in American education. Approved for every major standardized test, used in virtually every US high school and most introductory college courses, with the largest library of programs and tutorials online. If you’re unsure what to buy, this is the answer.
2. TI-Nspire CX II CAS — Best for Upper-Level STEM
Price: ~$140–$160 | Best for: Calculus II, Linear Algebra, Differential Equations, Physics, Engineering
The CAS (Computer Algebra System) version can solve symbolic equations and perform calculus operations symbolically. Genuinely useful in upper-level math courses. Note: CAS calculators are prohibited on most standardized tests — check before buying if you still have standardized tests ahead.
3. Casio fx-9750GIII — Best Budget Alternative
Price: ~$40–$50 | Best for: Students on a budget; AP exams, introductory college math
Approved for the SAT, ACT, and AP exams. Handles all standard graphing calculator functions at less than half the price of a TI-84. The interface is less intuitive for most users, and there’s less community support online — but for students who know what they’re doing, it’s excellent value.
Which Calculator for Each Major?
| Major | Recommended Calculator | Why |
|---|---|---|
| Business / Economics | TI-84 Plus CE | Standard for most courses; financial functions built in |
| Pre-Med / Biology | TI-84 Plus CE | Covers statistics and basic science; MCAT allows no calculator anyway |
| Engineering | TI-Nspire CX II CAS or HP Prime | CAS functions needed for upper-level courses |
| Mathematics | TI-Nspire CX II CAS | Symbolic computation essential for proofs and analysis |
| Statistics / Data Science | TI-84 Plus CE | Built-in statistical functions; most stats courses assume TI interface |
Pro tip: Check Facebook Marketplace, eBay, or your campus buyback board for used calculators before buying new. TI-84s in good condition sell for $40–$70 used. The hardware hasn’t changed meaningfully since 2015.