Point Plotter - Cartesian & Polar Coordinates Grapher

Welcome to the world's most advanced Cartesian & polar point plotter. This unique interactive Cartesian and polar points grapher (or Cartesian and polar coordinates grapher) is also capable of plotting points or coordinates in non-perpendicular Cartesian coordinate systems and generalized polar coordinate system by rotating axes.

A point plotter (or point grapher or coordinates plotter) is a grapher that plots a set of points in a coordinate system where the coordinates of the points are given by ordered pairs (an, bn).

The components of the ordered pairs can be either the Cartesian coordinates or the polar coordinates.

In addition to plotting points (xn, yn) in the Cartesian coordinate system this point grapher can be used to plot points (rn, θn) in the polar coordinate system where the angle θn can be entered in radians, degrees or grades.

Furthermore, utilizing the most sophisticated Cartesian and polar coordinate systems, this point plotter is the only Cartesian and polar coordinates grapher that enables you to rotate any of the coordinate axes and graph coordinates in non-orthogonal Cartesian and generalized polar coordinate systems.

Tips: As you type:
  • pi is replaced by π.
MouseMatics! You can use your mouse to Rotate Axis, Translate and Change Scale

In addition to inputting data – by first pressing the ⚙ (gear) button – you can use your mouse to perform some functionality unique to this interactive points grapher as outlined below.

  • Click on (or near) an axis and move your mouse. That will rotate the axis. The graph(s) are re-drawn in the non-orthogonal (non-perpendicular) Cartesian or generalized polar coordinate systems coordinate system. Click again to release the axis.
  • Drag the mouse to move the coordinate system together with the graphs.
  • Double-click in the canvas to move the origin to where was clicked.
  • Hold down Alt key and click on an axis to change the scale (zoom in one direction); the point which was clicked will be labelled "1" (or "-1") and becomes the new unit for that axis.
x y
Label Axes

Rotate Axes

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Make this Transparent
Graph Thickness
Angle Mode

To copy or save graphs right click on the image of a saved graph below and select "Copy image" or "Save image" from the pop-up menu.


It's easy to use the point plotter; type in the Cartesian or polar coordinates of a set of points – the points (a1, b1), (a2, b2), ... are entered as a1, b1; a2, b2; ... That is, separate the coordinates by a comma and the points by a semicolon. The last semicolon is optional, see the note below. You can use numeric expressions such as 1/2+sin(π/3) for point coordinates.

The point grapher plots the given point set as you type (default) in the selected Cartesian or polar coordinate system.

To draw the points (rn, θn) in the polar coordinate system select the polar checkbox. You can enter the radial angles θn in radians, degrees or grades by selecting the corresponding angle mode.

You can set the following options by pressing the ⚙ (gear) button at the top right corner of the graph canvas.