Graph Plotter
Enter a function using x as the variable. Click Plot or press Enter to draw. Add multiple functions to compare them.
How to Use the Online Graphing Calculator
This free graphing calculator lets you plot any mathematical function instantly in your browser. It works on desktops, tablets, and phones with no installation. Use the same notation you would use on a physical TI-84 calculator.
Type Your Function
Enter your equation in the field above. Use x as the variable, ^ for exponents, * for multiplication.
Click Plot
Press Plot or hit Enter. The curve draws instantly in a unique color on the green grid canvas.
Add More Functions
Type a second equation and click Plot again. Each function gets its own color. Compare them side by side.
Zoom and Pan
Use + / − buttons, scroll wheel on desktop, or pinch on mobile. Drag to pan. Click ↻ to reset the view.
Input Syntax Guide
The graphing calculator uses standard math notation. Here are all supported operators and functions. For deeper background on mathematical functions, Khan Academy's free algebra course is an excellent reference.
| What you want | What to type | Example |
|---|---|---|
| Addition / Subtraction | + - | x + 3 |
| Multiplication | * | 2*x (not 2x) |
| Division | / | x / 2 |
| Exponent / Power | ^ | x^3, x^(1/2) |
| Square root | sqrt(x) | sqrt(x + 1) |
| Absolute value | abs(x) | abs(x - 2) |
| Sine / Cosine / Tangent | sin(x) cos(x) tan(x) | 2*sin(x) |
| Inverse trig | asin(x) acos(x) atan(x) | asin(0.5) |
| Common log (base 10) | log(x) | log(x^2) |
| Natural log (base e) | ln(x) | ln(x + 1) |
| e to a power | e^x | e^(-x^2) |
| Pi constant | pi | sin(pi * x) |
| Floor / Ceiling | floor(x) ceil(x) | floor(x) |
2*x not 2x. Use ^ for powers. Trig functions use radians: sin(pi/2) = 1. Always close parentheses.Types of Functions You Can Graph
The plotter handles every function type from basic algebra through AP Calculus. Click the Quick Try buttons above to plot any of these instantly.
Linear Functions
Straight lines. Try: 2*x - 3
Slope, y-intercept, and systems of equations.
Quadratic Functions
Parabolas. Try: x^2 - 5*x + 4
Vertex, roots, and axis of symmetry.
Polynomial Functions
Higher degree curves. Try: 2*x^3 - 5*x
Local maxima, minima, and inflection points.
Trigonometric Functions
Periodic waves. Try: 2*sin(x)
Amplitude, period, and phase shift.
Exponential Functions
Growth and decay. Try: e^(-x^2)
Essential for calculus and statistics.
Logarithmic Functions
Inverse of exponentials. Try: log(x)
Used in pH, decibels, and information theory.
Rational Functions
Fractions with x. Try: 1/x
Visualize asymptotes and discontinuities.
Absolute Value
V-shaped curves. Try: abs(x - 2)
Common in algebra and distance problems.
Graphing Calculator Use on Standardized Exams
Graphing calculators are approved on all major U.S. standardized exams. Use this plotter to build confidence before exam day. On the actual exam, bring a physical TI-84 Plus CE. Online calculators are not permitted in testing centers.
| Exam | Calculator allowed? | Key graphing skills tested |
|---|---|---|
| SAT Math | Yes, on calculator section | Find zeros, intersections, max/min values |
| ACT Math | Yes, on all sections | Graph functions, identify transformations |
| AP Calculus AB | Yes, Parts A and B | Derivatives, integrals, area between curves |
| AP Calculus BC | Yes, Parts A and B | Polar graphs, parametric curves, series |
| AP Statistics | Yes | Regression plots, normal distributions |
The official College Board AP Calculus course description lists every required calculator skill. For detailed exam-specific strategies with the TI-84, see our Exam Guide.
This Plotter vs the TI-84 Plus CE
Both tools are free and require no download. They serve different purposes:
| Feature | This Graphing Plotter | TI-84 Plus CE Online |
|---|---|---|
| Plot functions (y = f(x)) | Yes | Yes (via Y= editor) |
| Multiple functions with colors | Yes | Yes (Y1–Y0) |
| Zoom and pan (mouse/touch) | Yes, drag and scroll | Yes, via ZOOM menu |
| Parametric / Polar graphing | No | Yes |
| CALC menu (zeros, intersect, integral) | No | Yes |
| Statistics and regression | No | Yes |
| Matches physical exam calculator | No | Yes |
| Instant visual, no menus | Yes | Requires key presses |
For a full breakdown of every TI-84 Plus CE feature including matrices, probability, and TI-BASIC programming, visit the Features page. For step-by-step TI-84 graphing tutorials, see How To Use TI-30 Calculator.
Need the Full TI-84 Experience?
Open the complete TI-84 Plus CE with parametric, polar, stats, matrices and every exam feature.
Frequently Asked Questions
x as the variable (e.g. x^2 - 4) in the input field above, then click Plot or press Enter. The curve appears instantly on the canvas below.2x instead of 2*x. Always include * for multiplication. Also check that parentheses are balanced and use ^ for exponents. See the syntax guide above.Explore More
Everything you need to master graphing and the TI-84 Plus CE.