What a TI-84 emulator actually is.
A true emulator imitates the calculator’s hardware and runs Texas Instruments’ own operating system. That operating system, called the ROM, belongs to Texas Instruments, so emulator projects do not include it. They ask you to copy it from a calculator you own, which usually means a cable, a transfer program, and a few minutes of setup.
If you just want to practice TI-84 keystrokes, you do not need any of that. The free TI-84 calculator on this site was built from scratch to use the same keys, menus, and menu numbers as the TI-84 Plus CE. It opens instantly in a browser with nothing to install.
The options side by side.
| Option | Cost | Needs a ROM? | Runs on | Notes |
|---|---|---|---|---|
| Elite Math Prep TI-84 Calculator (this site) | Free | No | Any browser: Chromebook, Windows, Mac, iPad, phone | Same keys and menus as the TI-84 Plus CE. Recreated from scratch, not TI’s software. |
| TI-84 Plus CE Online Calculator (Texas Instruments) | $20 per year per person | No | Browser on Chromebook, Windows, Mac | Official TI software. |
| TI-84 Evo Online Calculator (Texas Instruments) | Free four-year license with a TI-84 Evo, otherwise $20 per year | No | Browser | Official, for the TI-84 Evo released in April 2026. |
| TI-SmartView CE (Texas Instruments) | Paid subscription | No | Windows, Mac | Official teacher software with key press history for projecting. |
| CEmu | Free, open source | Yes, from your own calculator | Windows, macOS, Linux | Emulates the TI-84 Plus CE. Aimed at programmers. |
| jsTIfied (Cemetech) | Free | Yes, from your own calculator | Browser | Emulates the TI-83 Plus and TI-84 Plus family. Does not support the TI-84 Plus CE. |
Prices and details come from each project’s own website as of September 2026.
Which one should you use?
- Students practicing for class or a test. The free online TI-84 here, plus the step-by-step guides that play each keystroke.
- Teachers projecting a calculator. Projector Mode here shows a giant screen and every key pressed. If your school already pays for TI-SmartView CE, it offers the same idea as TI software.
- Anyone who needs TI programs, apps, or exact TI behavior. The official TI online calculator, or CEmu with a ROM from your own calculator.
What the free calculator can and cannot do.
It graphs up to ten functions, traces, and runs every item on the CALC menu: value, zero, minimum, maximum, intersect, dy/dx, and the integral. It builds tables, stores lists, runs 1-Var and 2-Var Stats and eight kinds of regression, and solves systems with the matrix editor and rref(. It covers the MATH, NUM, PROB, TEST, ANGLE, LIST, and DISTR menus, degree and radian mode, and the Numeric Solver.
It does not run TI-Basic programs or apps, and it does not do complex numbers. Answers appear on one line, the way Classic mode shows them, instead of stacked MathPrint fractions.
Can you use an emulator on the SAT?
No. The SAT allows an approved handheld calculator or the Desmos calculator built into Bluebook, and it does not allow phones, tablets, or laptops unless you have an approved accommodation. An emulator or online calculator is for practice before test day.
Questions.
Do I need a ROM to use a TI-84 emulator?
For a true emulator such as CEmu or jsTIfied, yes. The ROM is Texas Instruments’ operating system, and those projects ask you to copy it from a calculator you own. The free calculator on this site does not use a ROM at all.
Is there a free TI-84 emulator online?
jsTIfied runs in a browser for free, but it needs a ROM and does not support the TI-84 Plus CE. The calculator on this site is free, runs in any browser, and needs no ROM, though it is a from-scratch recreation rather than TI’s software.
Can I use an emulator or online calculator on the SAT?
No. The SAT allows an approved handheld calculator or the Desmos calculator built into Bluebook. Phones, tablets, and laptops are not allowed unless you have an approved accommodation.
What is the official TI-84 online calculator?
Texas Instruments sells the TI-84 Plus CE Online Calculator for $20 a year per person. Buyers of a TI-84 Evo get a free four-year license to the TI-84 Evo Online Calculator.