Last updated: March 2026
How to Graph Equations Online
Graphing an equation online is simple: type the equation using x as the variable, and the graph renders instantly. You can use standard mathematical notation including exponents (x^2), trigonometric functions (sin(x), cos(x)), logarithms (log(x), ln(x)), and square roots (sqrt(x)). Use parentheses to group operations and ensure the correct order of evaluation.
Our graphing calculator supports up to three simultaneous equations, each displayed in a distinct color. This makes it easy to compare functions, visualize intersections, or study how transformations affect a graph. Hover your mouse over any curve to see the exact x and y coordinates.
Graphing Tips and Common Functions
Linear functions: y = 2*x + 3 produces a straight line with slope 2 and y-intercept 3. Adjust the coefficients to see how slope and intercept change the line.
Quadratics: y = x^2 produces a parabola opening upward. Add terms like x^2 - 4*x + 3 to shift the vertex and find roots (where the curve crosses the x-axis).
Trigonometric: y = sin(x) produces the classic wave pattern. Try 2*sin(3*x) to see amplitude and frequency changes. Remember this calculator uses radians in graph mode.
Logarithmic: y = log(x) shows the base-10 logarithm curve. Use ln(x) for the natural logarithm. Note that logarithms are only defined for positive x values.
Frequently Asked Questions
How do I graph an equation?
Switch to Graph mode, type your equation in the input field using x as the variable (for example, x^2, sin(x), or 2*x + 1), and the graph appears instantly. You can add up to 3 equations with different colored lines. Use the zoom buttons to adjust the view.
What functions can I graph?
You can graph polynomials (x^2, x^3-2x), trigonometric functions (sin(x), cos(x), tan(x)), logarithmic functions (log(x), ln(x)), square roots (sqrt(x)), absolute value (abs(x)), and combinations of these. Use standard math notation with x as the variable.
Can I graph multiple equations at once?
Yes. Click 'Add equation' to add up to 3 equations simultaneously. Each equation is plotted in a different color (green, blue, red) so you can easily distinguish them. This is useful for comparing functions or finding intersection points.
How do I zoom in and out on the graph?
Use the Zoom In and Zoom Out buttons below the graph to adjust the view. Click Reset to return to the default view (-10 to 10 on both axes). You can also hover over the graph to see exact x and y coordinates at any point on the curve.
Is this as good as Desmos?
For quick equation plotting and visualization, this tool is faster and simpler than Desmos. Desmos offers more advanced features like sliders, tables, and inequality shading that are useful for teaching. For homework and quick graphing tasks, our tool gets the job done with zero learning curve.
Can I save or export my graphs?
Currently, graphs are session-only and render live in your browser. To save a graph, use your browser's screenshot function or the system screenshot tool. The graph renders as a high-quality canvas element that captures well in screenshots.