TI-84 Calculator Online: Free Graphing Calculator

Q: Is this TI-84 calculator online free?

Yes. It is free to use with no account, subscription or download.

Q: Does this TI-84 calculator work on phones and Chromebooks?

Yes. It runs in any modern browser on phones, tablets, Chromebooks and computers. Your lists, functions and settings are saved in your browser.

Q: Can I use it on the SAT, ACT or AP exams?

No. Testing centres do not allow internet-connected devices. Use it to practise, then bring an approved physical calculator on test day.

Q: Does it have STAT TESTS like a real TI-84?

Yes. Z-Test, T-Test, 2-sample tests, proportion tests, confidence intervals, χ² tests, the F-Test, LinRegTTest and ANOVA are all under STAT → TESTS.

Q: Is a TI-84 a scientific calculator?

Yes, and more. A TI-84 does everything a scientific calculator does, like trig, logs, exponents, fractions and scientific notation. It is also a graphing calculator, so it can draw graphs, run statistics tests and use matrices. If a class or test does not allow graphing calculators, use a scientific model like the TI-30XS instead.

Q: Is this TI-84 calculator made by Texas Instruments?

No. TI-84 is a Texas Instruments trademark, and this is an independent, free TI-84 style calculator. It is not affiliated with, sponsored by or endorsed by Texas Instruments.

About TI-84 Calculator Online

This is a free TI-84 graphing calculator online. The keypad, menus and screens follow the TI-84 Plus CE, the calculator most US high schools and colleges ask students to use.

You do not need to buy a TI-84 calculator or install an app. Open this page on a laptop, Chromebook, tablet or phone and start typing. It loads in a second and works the same on every device.

Think of it as a TI-84 simulator for homework, practice and class demos. Your lists, graphs and settings stay saved in your browser, so you can close the tab and pick up where you left off.

A Free Graphing Calculator Online, No Download

Most online graphing calculator websites only draw graphs. This one also has the TI-84 menus your class uses, so you can graph, trace, find zeros and run statistics with the same key presses as the handheld. It is a free graphing calculator with no account and no app to install.

StudentsCheck homework, graph equations and practise before a test.

TeachersShow keystrokes on a projector without passing a calculator around.

ParentsFollow the same screens your child sees in class.

AP and collegeRun statistics tests, regressions and matrix work.

Key Features

Every tool in this TI 84 online calculator follows the TI-84 Plus CE menus, so the steps in your textbook and class notes work here too.

Graph up to 8 functions

Type equations in Y= and press GRAPH. Each function gets its own colour, with zoom, trace and window settings.

Y= · GRAPH

Zeros, minimum, maximum and intersect

Find the roots of a parabola, the vertex, where two lines cross, the slope at a point and the area under a curve.

2nd TRACE

Table of values

See x and y values side by side for every function. Set the start value and step size in TBLSET.

2nd GRAPH

Lists and 1-Var Stats

Enter data in L1 to L6 and get the mean, median, quartiles, Sx and σx in one step.

STAT

Regression

Fit linear, quadratic, cubic, exponential, logarithmic and power models, with r and r² shown.

STAT → CALC

Hypothesis tests and intervals

Z-Test, T-Test, 2-sample tests, proportion tests, χ², F-Test and ANOVA. Press Draw to see the shaded p-value.

STAT → TESTS

Probability distributions

normalcdf, invNorm, invT, binompdf, binomcdf, tcdf, χ²cdf, Poisson and geometric.

2nd VARS

Matrices

Store matrices [A] to [J], then find the determinant, inverse, transpose and rref.

2nd x⁻¹

Equation solver, parametric and polar

Solve any equation for a variable, and switch to parametric or polar graphing in MODE.

MATH · MODE

How to Use This TI-84 Calculator Online

New to the TI-84? Learn what the special keys do, then follow six steps to use the TI 84 online right on this page. For the handheld, see our full guide on how to use a TI-84 calculator.

Learn the keypad first

2nd: Uses the blue label above a key. 2nd then x² gives √.
alpha: Uses the green letter above a key, for variables A to Z.
MODE: Switches radians and degrees, and function, parametric or polar graphs.
ENTER: Calculates the answer. On an empty line it repeats the last entry.
CLEAR: Clears the line you are typing. Press again to clear the screen.
(−): The negative sign, as in −5. The − key is only for subtraction.

Six steps to get started

Type a calculation

Type 2+3×4 and press ENTER. The answer, 14, appears on the right. The calculator follows the normal order of operations.

Fix a mistake

Use the arrow keys to move, DEL to delete, and 2nd ENTER to bring back your last entry so you can edit it.

Graph a function

Press Y=, type X²−4 using the X,T,θ,n key, then press GRAPH. If you cannot see the curve, press ZOOM then 6.

Check the table

Press 2nd GRAPH to see a table of x and y values. Use the up and down arrows to scroll.

Find a zero

Press 2nd TRACE, then 2. Press ENTER left of the root, ENTER right of it, then ENTER again. For X²−4 the answer is x = 2.

Run statistics

Press STAT, then 1, and type your data in L1. Press STAT, move right to CALC and choose 1-Var Stats.

Solve Real Problems Using TI-84 (Step-by-Step)

Six common homework problems with the exact keys to press. Try each one on the calculator above.

Solve a quadratic equation

x² + 5x + 6 = 0

Press Y= and type X²+5X+6
Press GRAPH
Press 2nd TRACE, then 2 (zero)
Set the left and right bound around each crossing, then press ENTER

x = −2 and x = −3

Find where two lines meet

y = 2x + 1 and y = −x + 7

Type 2X+1 in Y1 and (−)X+7 in Y2
Press GRAPH
Press 2nd TRACE, then 5 (intersect)
Press ENTER three times

x = 2, y = 5

Trigonometry in degrees

Find sin(30°)

Press MODE, move down to DEGREE and press ENTER
Press 2nd MODE to go back
Type sin(30) and press ENTER

0.5

Mean and standard deviation

Data: 4, 8, 15, 16, 23, 42

Press STAT, then 1, and type the numbers in L1
Press STAT and move right to CALC
Choose 1-Var Stats and press ENTER

x̄ = 18, Sx ≈ 13.49, median = 15.5

Normal distribution probability

Mean 70, SD 5. Find P(60 < X < 80)

Press 2nd VARS, then 2 (normalcdf)
Type normalcdf(60,80,70,5)
Press ENTER

0.9545, about 95%

Solve a system with a matrix

2x + y = 5 and x − y = 1

Press 2nd x⁻¹, go to EDIT and choose [A]
Set size 2×3 and enter 2, 1, 5 and 1, −1, 1
On the home screen type rref([A]) and press ENTER

x = 2, y = 1

Common TI-84 keystrokes

The same button presses work here and on a physical TI-84 Plus CE.

Task	Keys	Example
Square root	`2nd x²`	`√(16)` = 4
Decimal to fraction	`MATH 1`	`0.75►Frac` = 3/4
Add fractions	`MATH 1`	`1/3+1/4►Frac` = 7/12
Intersection of two graphs	`2nd TRACE 5`	Y1=X², Y2=X+2 → x = 2
Inverse normal	`2nd VARS 3`	`invNorm(.975)` = 1.96
Binomial probability	`2nd VARS A`	`binompdf(10,.5,3)` = 0.1172
T-Test	`STAT ◀ 2`	Choose Data or Stats, then Calculate
Matrix inverse	`2nd x⁻¹ 1 x⁻¹`	`[A]⁻¹`
Reset the window	`ZOOM 6`	X and Y from −10 to 10

Quick answers about the TI-84

Short answers to the questions students ask most.

Can I use the TI-84 calculator without downloading?

Yes. Nothing to download or install. The calculator runs inside this page, so it works on school Chromebooks where you cannot add software.

Is a TI-84 a graphing calculator?

Yes. It plots up to 10 functions, plus parametric and polar graphs. This online TI-84 plots 8 functions with trace, zoom and table.

Is there a free TI-84 calculator online?

Yes, this one. It is free to use with no sign-up. The official Texas Instruments calculator online is sold as a paid yearly license.

Is this a TI-84 Plus CE emulator?

It works like one. The keys and menus match the TI-84 Plus CE, but the math engine is written from scratch. You do not need a ROM file or any download.

Do I need a TI-84 calculator app?

No. TI84 online works in your browser like an app. On a phone, add it to your home screen for one-tap access.

Is it a good graphing calculator for statistics?

Yes. It has 1-Var and 2-Var Stats, regressions, normalcdf and invNorm, plus every test in STAT → TESTS. That covers AP Statistics.

Is the TI-84 good for high school?

Yes. It is the standard high school calculator for Algebra 1 through Calculus, and it is allowed on the SAT, ACT and AP exams.

Is the TI-84 better than the TI-83?

Slightly. The TI-84 is faster, has more memory and a USB port. The menus are almost the same, so TI-83 steps also work here.

TI-83, TI-84, TI-84 Plus CE: Comparison Table

All three share almost the same menus. The newer models are faster, have more memory, and the CE adds a colour screen.

Feature	TI-83 Plus	TI-84 Plus	TI-84 Plus CE
Released	1999	2004	2015
Display	Black and white, 96×64	Black and white, 96×64	Colour, 320×240, backlit
Processor	6 MHz	15 MHz	48 MHz
Storage	160 KB	480 KB	3 MB
Power	AAA batteries	AAA batteries	Rechargeable
USB port	No	Yes	Yes
Programming	TI-Basic	TI-Basic	TI-Basic, Python edition
SAT / ACT / AP	Allowed	Allowed	Allowed

Difference Between Online TI-84 and Physical TI-84 Plus CE

Use TI84 online for learning and homework. The physical calculator is what you take into the exam room.

Feature	This online TI-84	Physical TI-84 Plus CE
Price	Free	About $100–150
Graphing, stats, tests, matrices	Yes	Yes
Works on	Any browser: laptop, Chromebook, phone	The handheld only
Saves your work	In your browser	On the device
Battery	Not needed	Needs charging
TI-Basic programs and apps	Not yet	Yes
Allowed in exams	No	Yes (SAT, ACT, AP)

More calculators online

Other models students use in class. New pages are added regularly.

Frequently asked questions

Is this TI-84 calculator online free?