Type an equation
Enter y = x^2 − 4, sin(x)/x, x^2 + y^2 = 25 or r = 3cos(4θ). Press Enter for a new line; each line gets its own colour.
Free Graphing Calculator
Type equations the way you write them – y = 2x + 1, x² + y² = 25, r = 2cos θ – and watch them draw as you type. Add sliders for a, b and c, tap a curve to mark its zeros, highs, lows and crossings, and share the graph with a link.
Open Graphing Calculator →How to use the graphing calculator
Explore the graph
Drag to move, scroll or pinch to zoom, and point at a curve to read coordinates. Tap a curve to mark its roots, highs, lows and crossings.
Adjust and share
Use a letter like a and add a slider for it, press play to animate, then copy a link to the graph or download it as PNG.
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Graphing Calculator FAQ
What kinds of graphs can I draw?
Functions y = f(x) and x = g(y), parametric curves (x(t), y(t)), polar curves r = f(θ), implicit equations such as x² + y² = 25 or x³ + y³ = 6xy, inequalities with shaded regions, and single points like (2, 3).
How do sliders work?
Use any letter, such as y = a·sin(bx), and press the add slider button that appears, or type a = 2 on its own line. Drag the slider, change its range and step, or press play to animate the value back and forth.
How do I find roots, maximums and intersections?
Tap or click a curve. Grey dots mark its zeros, local maximums and minimums, the y-intercept and where it crosses other curves in view, and the key points list shows their coordinates. Tap a dot to label it on the graph.
Can I see a table of values?
Yes. The table below the graph lists x and y for the selected function from any start value and step. Copy it as CSV for a spreadsheet.
Does it support degrees?
Yes. Switch between radians and degrees above the expression list. In degrees, sin(90) = 1 and polar curves run from 0° to 360°.
How do I share or save a graph?
The graph is saved in your browser and in the page address, so Copy link gives a link that opens the same graph. Download PNG saves a high-resolution image with a legend for homework, slides or worksheets.
Is there a unit circle?
Yes. Switch to Unit circle to drag an angle around the circle and see sin, cos and tan as lengths, with exact values such as √3/2 at the special angles, in degrees or radians.
Is it free?
Yes. Free, no sign-up, no watermark, and everything is calculated in your browser.
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