Type what you need in plain English. E-Code writes the TI-BASIC, runs it on a pixel-exact calculator screen so you can watch the method work, and gives you the file for your own calculator.
Works with the TI-84 Plus and TI-84 Plus CE, including the CE-T and Python editions. TI-89 Titanium is in beta. Not for the TI-Nspire or Casio.
Say what the program should do. E-Code asks one clarifying question when it needs to, then writes real TI-BASIC.
The program runs on a virtual TI-84 screen, pixel for pixel, with inputs you type. Every line is checked byte-for-byte against the real .8xp format before you see it.
Download the .8xp and send it with TI Connect CE, Texas Instruments’ free software. In Chrome or Edge on a computer you can also send it straight over USB (beta).
Five hand-verified programs, from algebra to fluid dynamics. Each one runs live on the examples page and you type the inputs yourself.
“Give me a quick formula card for the quadratic formula, the slope formula, and the distance formula — something I can flip through with a menu during practice.”
“Take two sides of a triangle and the angle between them, then find the third side with the Law of Cosines.”
“Build a solver for the ideal gas law that works no matter which variable I'm missing — pressure, volume, moles, or temperature.”
“Projectile motion — given a launch speed and angle, find the time of flight, the max height, and the range.”
“A fluid dynamics program that computes the Reynolds number for pipe flow and tells me if it's laminar, transitional, or turbulent.”
The standard way. TI Connect CE is Texas Instruments’ free transfer app for Windows and Mac; drag the file onto your calculator over its USB cable. Works with every TI-84 Plus and Plus CE.
Available now, every browser
Plug the calculator in and press Send; no other software. Needs Chrome or Edge on a computer. Still in beta while we finish testing it on real calculators.
Beta, Chrome or Edge on desktop
$0no account, no card
$8a month
$16a month
Cancel any time from your account page. Exam mode (Press-to-Test) disables all programs on the calculator: E-Code is for homework, practice and checking your work.
The TI-84 Plus and TI-84 Plus CE, including the CE-T and Python editions, fully. The TI-89 Titanium is in beta: most statements work, a few control-flow forms don’t encode yet. It does not support the TI-Nspire or Casio calculators.
Usually not. Press-to-Test (exam mode) disables every program on the calculator, and most schools require it. E-Code is for homework, practice and checking your method; follow your school’s rules on calculator use.
Only on the free tier, where your request goes through a Claude chat you paste into yourself and E-Code never sees it. Starter and Pro write the program inside the app with no account of your own.
Download the .8xp file and send it with TI Connect CE over the USB cable, on Windows or Mac. In Chrome or Edge on a computer you can also send it directly from E-Code; that path is in beta.
Yes, at any time from your account page. Plans are monthly, and cancelling stops the next charge.
