Built for the classroom
Both calculators on this site are free, browser-based, and need nothing installed — which matters most exactly where you can't install anything: a shared school computer, a locked-down Chromebook, or a device you don't personally manage.
For students
No account, no download, and no admin permissions required — open the TI-84 calculator or the TI-30XS calculator in any browser and start working. Your history, stored variables, and settings save locally in that browser automatically, so switching between a school Chromebook and a home computer just means starting a new history, not losing access entirely.
For teachers
A consistent screen to demo from on a projector, with no software to install on a classroom computer and nothing for a district's IT policy to flag. It matches the physical TI-84 Plus CE and TI-30XS layouts closely enough that keystrokes you're already teaching carry over directly, whether a given student has the physical device, this site, or both.
Maintaining a course page, LibGuide, or resource list? Both calculators can be embedded directly — paste this into any page that allows an iframe:
<iframe src="https://ti-84-calc.com/embed/calculator" width="450" height="820" style="border:0" loading="lazy" title="TI-84 Plus CE Calculator"></iframe>Swap the src for /embed/ti-30xs-calculator for the TI-30XS instead, and adjust the width/height to fit your layout.
For engineers
Outside the classroom, it's the same pitch minus the school-device constraint: a fast, keyboard-driven scientific and graphing calculator you can open in a browser tab instead of digging a physical one out of a drawer.
Frequently asked questions
Do students need to create an account?
No — there's no login, no email, and nothing to sign up for. Open the calculator and start using it immediately.
Does this work on school-issued Chromebooks?
Yes — it's a website, not an installable app, so it runs the same on a school Chromebook as anywhere else. There's nothing for school IT to approve or install.
Is it actually free, or is there a paid tier?
Completely free, with no paywall, trial period, or premium features held back.
Can a teacher project it for a class demo?
Yes — it's a normal webpage, so it displays cleanly on a projector or shared screen at any size, and both a TI-84 Plus CE-style and a TI-30XS-style calculator are available depending on what the class is using.