Free TI-84 Calculator Online Instantly No Download

Use the full TI-84 Plus CE calculator right here in your browser. Graph functions, solve equations, run statistics completely free

What You Get on This Page

A physical TI84 Plus CE costs you over $100 to $300 at any store. The version on this page runs you exactly $0 and you can use the TI 84 calculator online right now without downloading anything.

No app store. No account. No credit card. Open this page on any device—laptop, Chromebook, tablet or phone and the full graphing calculator online loads instantly in your browser.

This page does Three things:

Provides you with the working calculator (start button)
Teaches you how to actually use it the complete guide step by step
Also you can see your calculations history save in your browser

Every button, every menu, every shortcut and every graph function is explained easily with real students taking examples from actual classroom problems. Whether you need to graph a parabola for Algebra II, perform a linear regression for AP Statistics, or verify a trig identity before an exam, this guide shows you how to do it step by step. 100% Free, No signing up Mobile-Friendly, SAT/ACT Prep Ready.

About the TI-84 Why Every School Needs This Calculator.

The most common graphing calculator used in the American education system is the Texas Instruments TI 84 Plus ce. Walk into any high school or college math or science classroom, and you will see students working on TI-84s. Teachers base their entire curriculum on its menus. It is approved by standardized tests by name. Textbook publishers write button-by-button instructions that refer to it directly on the calculator.

Why This particular Calculator Dominates

Texas Instruments calculator launches the TI-84 Plus, an upgrade of the TI-83 with the same familiar layout but more memory, a faster processor, and USB connectivity. When the TI-84 Plus CE came around, it included a full-color screen, a rechargeable battery, and the MathPrint feature, which displays fractions, exponents and radicals the way they appear in your textbook instead of cramming everything onto a single line.

The result? A graphing calculator that handles everything from middle school to college: basic arithmetic, algebra, geometry, trigonometry, calculus, statistics, matrix operations, financial calculations and even simple programming.

Where the TI 84 is Allowed for Use

The TI-84 Plus graphing calculator is approved for use on:

SAT (all sections that allow calculators)
ACT (entire math section)
AP Exams (Calculus AB/BC, Statistics, Physics, Chemistry)
PSAT/NMSQT
IB Mathematics
Most state standardized tests

College entrance and placement exams

Our online version replicates every function of the TI-84 Plus CE, making it the 100% ideal perfect accurate tool for practice and preparation. develop your skills here and use them in a physical device on test day.

Quick Start Guide Use the TI 84 Calculator in 60 Seconds

You do not have to read the whole page line by line only you can begin. Here are 7 easy steps to understand the basics:

Step 1: The ti 84 calculator online is already loaded when you click on the start button.

Step 2: Use your mouse to click on any button, or use your keyboard to type. Number keys, operators and Enter all naturally map.

Step 3: You can also see your calculations history. It helps in your overall calculations.

Step 4: Your input is displayed on the left side of the display. The answer is on the right after you press the enter key.

Step 5: Continue to press CLEAR once to erase the current line. Press it twice to clear the whole screen.

Step 6: Push 2ND before pushing another key to a secondary function that is printed above that key in yellow.

Step 7: Push the ALPHA key and then push another key to type the green letter printed above that key.

Your first calculation: Type 25 * 4 + 10 and press enter. The screen shows 110. You just used the calculator.

Your first graph: Push Y=, enter 2X + 3 by using the X,T,theta,n button for X, push ZOOM, choose ZStandard and a straight line appears. You just plotted your first function.

Hear Full Guide of Display and Mode Settings

The MODE Screen

Press the mode to open the settings screen. Every one of the settings on this screen has an effect on how the calculator deals with your input and output. Getting even one setting wrong can give you a completely incorrect answer, especially with trigonometry.

Here is each of the mode settings explained:

Zone	Color	Keys in This Zone	Purpose
Graph Keys	Blue top row	Y= WINDOW ZOOM TRACE GRAPH	The 5 main graphing keys are used every day when you creat graph
Mode/Access	—	2ND MODE DEL ALPHA	Switch functions, change settings, delete
Math & Solve	—	MATH APPS MATRIX PRGM	Access menus for math, apps, matrices, programs
Navigation	—	▲ ▼ ◄ ► ENTER	Move left,rifht,up and down cursors, and confirm input mainly used in graph and calculation edits.
Operations	—	+ − × ÷ ^	Arithmetic and exponents
Trigonometry	—	SIN COS TAN	Sine, Cosine, Tangent and Inverses
Log / Exp	—	LOG LN	Base-10 log, natural log and their inverses
Number Pad	—	0–9 . (-)	Enter digits; (-) is negative sign (not subtraction)
Variable	—	X,T,θ,n STO→	Store values and enter the variable X
Statistics	—	STAT	Lists, regression, distributions

Every Key on the TI-84 Plus has a Detailed Function and Table fully explained.

Key	Primary Function	2ND Function	Simple Example Easy To Understand
Y=	Explore all the buttons where you type your equation. Think of it like the "write your function here" screen. Without this, you are unable to graph anything.	STAT PLOT -> turn scatter plots on/off
WINDOW	Lets you control how much of the graph you can see. Set x-axis and y-axis range manually	FORMAT change graph appearance (axes, grid, labels)
ZOOM	Gives you ready-made window settings. Zoom presets for the graph window to used easily	ZFIT automatically adjusts the Y range to fit whatever graph is on screen
TRACE	Trace a point along a graphed curve	CALC -> calculate zeros, mins, maxes, intersections
GRAPH	Display the active graph on screen	Make sure it is always the last button you press when graphing.
2ND	Press 2ND then X² → you get a square root √( instead of squaring. That is clear concept	—
MODE	Change angle mode, decimal digits, notation	QUIT: return to home screen
DEL	Delete character or number at using cursor	INS -> insert a character (cursor shifts right)
ALPHA	Activate green-letter (alpha) functions	A-LOCK: lock alpha mode on
MATH	open MATH menu: fractions, roots, min/max, solver	TEST inequality symbols (> < = ≥ ≤ ≠)
APPS	Opens a list of built-in applications already on your calculator, things like the Periodic Table, Finance Solver, and Inequality Graphing.	—	Press APPS, and select Finance; opening TVM Solver
MATRX	Opens the matrix editor where you create and edit matrices. Also holds matrix math tools.	—	Press MATRX → EDIT → A and set size 2×2 then enter values go back to MATH for operations
PRGM	Lists all programs you have saved on your calculator. You can run them (EXEC), edit them (EDIT), or program a new one	—	Press PRGM then EXEC -> press ENTER to run it
STO→	Saves any number into a letter variable (A through Z or θ)	RCL recalls a stored value onto the screen
STAT	Open the statistics editor and calculation menus and TESTS runs hypothesis tests.	LIST list operations as a sort ascending, sort descending
X,T,θ,n	This one button types the current graphing variable. In normal (function) mode it types X. In parametric mode it types T.	—	Press Y= then press this button; it types x automatically more faster than pressing ALPHA + X
^	Raises a number to any power. The number before ^ (example: 2^8 = 256)	π (pi 22/7 = 3.14	2^10 = 1024 · 5^3 = 125 · 9^0.5 = 3
×	Multiply	[ (left bracket for matrices)	5×5 = 25
÷	Divide	] (right bracket for matrices)	144 ÷ 12 = 12
+	Add	MEM is a known as memory management menu	4+5=9
−	Subtract (binary operator between two values)	ANS: pastes your last calculated answer. Faster than retyping it. Also works automatically if you start a new line.	100−37 = 63
(-)	Makes a number negative. This is completely different from the minus key. If you use - instead of (-) for a negative number, you will be show ERR:SYNTAX	ENTRY used to recall last typed expression so you can edit and rerun it
ENTER	The "equals" key. Processes your calculation or confirms a menu selection. Pressing on it again repeats the last calculation.	SOLVE: executes the numerical equation solver (locates a solution of an expression that equals zero)
CLEAR	Pressed once: clear current input line. Pressed twice on the home screen: clears entire history off the screen. Does NOT delete the Y= equations or stored variables.	n/a	Press once to fix a mistake. Press twice so that the screen is cleaned and you start new.
SIN	Sine of an angle. Opens sin (ready	SIN⁻¹ inverse sine (arcsin). Finds the angle when you type the value know the sine ratio.
COS	Cosine of an angle	COS⁻¹—inverse cosine (arccos). Finds the angle
TAN	Tangent of an angle. Opens tan( ready for input.	TAN⁻¹inverse tangent (arctan). Solves the angle as known of the tangent ratio.	tan(π/4) = 1
LOG	Base-10 logarithm. Asks "10 to how many gives this number?"	10^x : the reverse: exponent 10 to the power you enter
LN	10^x - the reverse: exponent 10 to the power you enter	e^x - the reverse - raises e (2.71828+) to the power you type
x²	Squares whatever number or expression is before it.	√ (square root)
x⁻¹	Reciprocal (1 divided by x)	EE : enter scientific notation (e.g., 3.2E4)
0 – 9	Digit entry	Various secondary functions

The Most Common Mistake done by the students: Wrong Angle Mode

This deserves a section of its own as it leads to more wrong answers than any other setting.

Example of the disaster:

Your homework says: Find sin(30°).

In Degree mode: sin(30) = 0.5 Correct
In Radian mode: sin(30) = −0.988 Wrong (30 radians ≠ 30 degrees)

Rule: Before any trigonometry problem, you need to press the MODE, and confirm your angle setting. Your teacher and your exam will tell you if you should use degrees or radians. The units almost always used in AP Calculus are radians. The SAT and ACT almost always use degrees.

The MathPrint Feature:

MathPrint is used to change the way expressions are displayed on screen. Instead of displaying fractions, such as 1/2, it stacks them in a vertical format like you show them on paper. Instead of showing exponents as X^2, it raises the 2 as a proper superscript. Square roots have an actual radical sign with a bar over the expression.

This feature makes it dramatically easier to catch input mistakes because this screen resembles your textbook

Why Use Our Ti 84 Calculator?

Everything you need for advanced math, graphing, and scientific calculations

Scientific Functions

100% complete complement of scientific tools, including sine, cosine, tangent, logarithms, exponents, square roots and more. Switch immediately between degree and radian modes so that your answers always match your textbook or exam instructions.

Graphing Engine

The ability to plot multiple functions simultaneously and explore them using pan, zoom, trace, and table views. Work in normal, parametric or polar modes so that you can manage anything from straight lines to complex curves.

Calculation History

Every calculation you make is stored by default in your calculator history, directly in your browser storage. Scroll through previous steps using the arrow keys and copy a calculation that has been completed previously. Close the tab and return later; your recent history is still here to review and re-use your work, across homework sessions.

Statistics & Regression

Run 1-variable and 2-variable statistics including mean, median, standard deviation and quartiles. Fit models using linear, quadratic, and exponential regression and apply them to your lists of data just as you would on your physical TI-84.

Matrix Operations

Create and edit matrices and then compute determinants, inverses, transpose and products in a few keystrokes. The layout and commands are the same as the real TI-84 so everything you learn here will transfer straight to the calculator you have for class or exams.

How to Make Graph on the TI-84

Graphing is the signature strength of the TI 84 Plus CE graphing calculator. All graphs begin with the same five keys across the top row: Y= --> WINDOW --> ZOOM --> TRACE --> GRAPH. Hear students learning these 5 keys to learn to graph functions, analyze curves and easily solve visual problems in seconds.

Step	What You Are Doing	What to Press	Think of It Like This
1	Open the screen where you are typing your equation	Press Y=	This will be your "write the function here" screen
2	Type your equation next to Y1=	Type your function, e.g. X ^ 2 − 4	Use the X, T, theta, and n key each time you require the letter X
3	Set as a normal, standard graph window	Press ZOOM then select 6 (ZStandard)	This defines the view from -10 to +10 on either side
4	Draw the graph on screen	Press GRAPH	Always the very last button you press
5	Slide a dot along the curve to read off values	Press TRACE then press ◄ or ► move right or left	The exact X and Y values displayed at the bottom of the screen
6	Go straight to a certain X value on the curve	Press TRACE type any number and press ENTER	Example: type 3 and it instantly shows you Y when X=3
7	See an entire table of X and Y values side by side	Press 2ND then GRAPH will be show on screen	Great for checking multiple things without tracing through one by one
8	Zoom into a smaller area or create a custom view	Press WINDOW then change Xmin, Xmax, Ymin, Ymax, Xscl, Yscl	Example: set Xmin=0 and Xmax=5 to see only the right side of the graph

WINDOW Settings Explained

Setting	What It Controls	Default (ZStandard)
Xmin	Leftmost x-value shown	−10
Xmax	Rightmost x-value shown	10
Xscl	Spacing between x-axis tick marks	1
Ymin	Bottom y-value shown	−10
Ymax	Top y-value shown	10
Yscl	Spacing between y-axis tick marks	1
Xres	Graph resolution (1 = best quality, 8 = fastest)	1

Option	What It Does	When to Use
1: ZBox	Draw a zoom box with the cursor	Zoom into a specific region
2: Zoom In	Zoom in at cursor position	Look closely at a point
3: Zoom Out	Zoom out from cursor	See the wider curve
4: ZDecimal	Each pixel = 0.1 unit	Trace clean decimal values
5: ZSquare	Makes x and y scale equal	Circle graphs appear circular
6: ZStandard	Resets to −10/+10 on both axes	Starting point for any new graph
7: ZTrig	Optimized window for trig functions	Sine, cosine, and tangent waves
8: ZInteger	Each pixel = 1 integer unit	Integer-only problems
9: ZoomStat	Auto-fits window to your data list	Scatter plots and regressions
0: ZoomFit	Adjusts y-axis to match current x-range	When graph is cut off vertically

The CALC Analysis Menu Find Zeros, Extrema, Intersections, and Derivatives

Option	What It Finds	How To Use It
1: value	Y value for any X you choose	Type an X value, press the ENTER key
2: zero	Where graph crosses the x-axis	Set left bound, right bound, guess
3: minimum	Lowest point on a curve	Set left bound, right bound, guess
4: maximum	Highest point on a curve	Set left bound, right bound, guess
5: intersect	Where two graphs cross	Select both curves, provide a guess.
6: dy/dx	Slope (derivative) at a point	Move cursor to point desired
7: ∫f(x)dx	Area under curve between two x values	Set lower limit and upper limit

Worked Examples for Each CALC Option

1: zero Find Roots of a Quadratic:

Graph Y1 = X² − 5X + 6. Find where it equals zero.

Press 2ND TRACE 2:zero

Left bound: Move cursor left of where curve crosses x-axis. Note that the cursor must be moved before pressing ENTER.

Right bound: move the cursor to the right of the crossing, press enter

Guess: enter near the crossing

Result: X = 2 (first root)

Repeat for the second crossing --> X = 3 (second root)

The roots are x = 2 and x = 3. Check: (2)² − 5(2) + 6 = 4 − 10 + 6 = 0

2: minimum - Locate the Vertex of a Parabola:

Graph Y1 = 2X² − 8X + 3.

Press 2ND TRACE then 3: minimum.

Left bound: X = 0

Right bound: X = 5

Guess: X = 2

Result: Minimum at (2, −5)

3: intersect—Solve a System of Equations:

Graph Y1 = X² and Y2 = 2X + 3.

Press 2ND TRACE 5: intersect.

Select Y1 (ENTER), select Y2 (ENTER), guess (ENTER)

Result: Intersection at (3, 9)

Repeat near the other crossing --> (-1, 1)

The solutions to X² = 2X + 3 are X = 3 and X = −1.

4: ∫f(x)dx Find Area Under a Curve:

Before using any CALC option, always press ZOOM and then press 6 first to make sure your graph is visible on screen.

Function: Y1 = X³

Goal: Find slope at X = 2

Steps: 2ND TRACE 6: dy/dx move cursor to X = 2 ENTER

Result: dy/dx = 12 Check: derivative of X³ = 3X² 3(2²) = 12

Statistics & Data Analysis

The TI-84 Plus is one of the most complete statistical calculators available to students. From simple mean and standard deviation to complete regression analysis, all measurements of statistical tools live under the key STAT.

1: Variable Statistics (1-Var Stats) Press STAT 1: Edit—enter your data into L1

2: Press STAT then ►CALC → 1: 1-Var Stats select L1 ENTER

Output Value	Symbol
Mean	x̄
Sum	Σx
Sum of squares	Σx²
Sample std. deviation	Sx
Population std. deviation	σx
Sample size	n
Minimum	minX
First quartile	Q1
Median	Med
Third quartile	Q3
Maximum	maxX

Regression Types Available

Regression	STAT → CALC Option	Equation Form
Linear	4: LinReg(ax+b)	y = ax + b
Quadratic	5: QuadReg	y = ax² + bx + c
Cubic	6: CubicReg	y = ax³ + bx² + cx + d
Exponential	0: ExpReg	y = ab^x
Logarithmic	9: LnReg	y = a + b·ln(x)

Frequently Asked Questions

Find answers to the most common questions about our calculator

Yes, our online TI-84 calculator is completely free. You do not pay anything to use it. There are no hidden fees

No. You do not have to download any software, install any app, or create any account. This calculator is completely run in your web browser. Just click on the start calculator button, and you will go directly to the TI-84 calculator page and begin your studies by beginning to press buttons. It works on Chrome, Safari, Firefox, Edge and every other modern browser.

You can use this online TI-84 to help you practice and prepare for the SAT, ACT, AP, PSAT and IB exams. Every function corresponds to the physical TI-84 Plus CE, so the skills you develop here are transferable to the actual device. However, you need a physical calculator for the actual room of the exam; testing centers do not allow phones, tablets, or laptops.

Yes, our calculator is fully mobile responsive and works on phones, tablets, laptops, and desktops. You can even adjust the calculator size using the zoom controls.

Press the Y= button and type your equation using the X,T,theta,n button for the variable X. Then press on ZOOM and then 6 to make the standard viewing window. Finally, press GRAPH. Your function is displayed on the screen. Use TRACE to trace along the curve and read (x, y) coordinates at each point.

ERR:SYNTAX means you typed something the calculator cannot interpret. The most common causes are a missing closing parenthesis, using the subtraction key instead of the negative (-) key, or placing two operators next to each other.

Yes, in multiple ways. You can graph both equations and use CALC -> intersect to find where both intersect. You can enter the augmented matrix and use rref( to find the solution. You can also use the Simultaneous Equation Solver app from the APPS menu for a guided approach, which will solve up to 10 equations simultaneously.