Looking for the Texas Instruments online calculator? Here's what's actually free, and what isn't.
Texas Instruments sells its own official TI-84 online calculator, and it costs money. This page tells you exactly what that gets you, then gives you a free tool that matches the same interface.
Quick answer: Texas Instruments does have an official TI-84 Plus CE online calculator, but it isn't free. It costs $20 a year, only runs in Chrome, and needs an activation key. If you bought a physical TI-84 Plus CE recently, you likely already got four years of free access bundled with it.
The calculator on this page is a separate, independent tool. It's not made by Texas Instruments, and we're not pretending otherwise. It matches the same button layout and functions, works in any browser, and needs nothing to activate.
What this free version actually gives you
No cost, ever
No subscription, no yearly fee, no trial that expires.
Works in any browser
Chrome, Safari, Firefox, or Edge. TI's official version only works in Chrome.
Nothing to activate
No account, no license key, no waiting on a school or district to grant access.
Same core functions
Graphing, statistics, matrices, trigonometry, and TI-BASIC, matching the TI-84 Plus CE menu layout.
Works on any device
Phone, tablet, Chromebook, or laptop.
Instant access
Open the page and start working. No setup screen, no waiting on IT.
Official TI-84 Plus CE online calculator vs this free tool
An honest side by side, since you deserve to know exactly what you'd be paying for.
| TI's official online calculator | This free tool | |
|---|---|---|
| Cost | $20 per year, or free for 4 years with a new TI-84 Plus CE | Free, always |
| Browser support | Chrome only | Chrome, Safari, Firefox, Edge |
| Activation required | Yes, needs a key | No |
| Made by Texas Instruments | Yes, official | No, independent |
| Bundled apps like Cabri Jr geometry | Yes | No |
| Best for | Schools issuing accounts at scale, official recordkeeping | Quick individual use, homework, practice |
If your school already provides accounts for TI's official version, use that, it's the real thing and worth using if it's already paid for. If you just need something to work on tonight's homework without paying or activating anything, that's exactly what this page is for. You can see full pricing and purchase details directly on Texas Instruments' official site.
Already own a TI-84 Plus CE? You may already have free official access. New TI-84 Plus CE calculators come with four years of free access to TI's real online calculator. Check the slide case that came with your calculator for an activation key, then visit TI's License Activation Center to redeem it.
If you can't find the key or the license has expired, this free tool is a solid fallback in the meantime.
How to use this free version
- Open the calculator above.
- Type your equation using the on-screen keypad or your keyboard.
- Press ENTER to calculate.
- To graph something, press Y=, type your equation, then press GRAPH.
- Press WINDOW if the graph looks cut off.
Who this is actually for
Students without a school account
Your school hasn't set up official access, or you want something to use tonight.
Anyone without Chrome
TI's official version won't run in Safari or Firefox. This one does.
Lost or expired activation keys
A working fallback while you sort out your official access.
One-off, quick use
You don't want to pay $20 a year for something you'll use twice this semester.
Frequently asked questions
Is the official Texas Instruments online calculator free?
No. Texas Instruments charges $20 per year for their official TI-84 Plus CE online calculator, though it comes free for four years with the retail purchase of a physical TI-84 Plus CE.
Is this calculator made by Texas Instruments?
No. This is an independent free tool built to match the TI-84 Plus CE's menus and functions. It is not affiliated with or endorsed by Texas Instruments.
Do I need Chrome to use this?
No. TI's official online calculator only works in Chrome. This free version works in any modern browser.
What if I already own a TI-84 Plus CE?
Check the slide case that came with your calculator for an activation key. New TI-84 Plus CE purchases include four years of free access to TI's official online calculator.
Do I need an account or activation key for this free version?
No. There's nothing to activate and nothing to sign up for.
Is my work saved when I use this?
No. Nothing you type is stored or sent anywhere. Take a screenshot before closing the tab if you want to keep it.
Ready to start calculating?
No sign up, no download, no activation key. Just open it and start working.
Open the Calculator