How do I enter coordinates into the point plotter?

Simply enter your points as ordered pairs separated by commas, and separate each point with a semicolon (for example: 1,2; 3/4,4; -2,sin(π/6);). Do not include parentheses. Spaces between numbers are optional.

Does this point grapher support both Cartesian and polar coordinates?

Yes. By default, the tool plots in the Cartesian system. Checking the Polar checkbox instantly switches the coordinate grapher to a polar system, interpreting your input pairs as (r, θ).

What angle units can I use for polar plotting?

The polar point plotter supports angles in radians, degrees, or grads. You can toggle your preferred unit directly in the application interface.

Can I graph data in an oblique coordinate system?

Yes. This is the world's only online point grapher that supports axis rotation, allowing you to visualize point graphs, line segments, and polygons in non-orthogonal (oblique) systems.

How do I connect points to make a polygon or line graph?

Click the Connect toggle button to link the points in your active expression box with line segments. To close a polygon and link the final point back to the first point automatically, simply end your input sequence with a semicolon.

Point Plotter | Cartesian, Polar & Oblique Grapher

Graph points in Cartesian planes, polar grids, or oblique coordinate systems created by rotating either axis independently.

Graph point sets easily in a Cartesian plane, or seamlessly switch to a polar grid using the world's most advanced point plotter. Create precise point graphs in coordinate planes, or connect data points to instantly construct line graphs. This free online Calculator-Math™ point plotter is the only tool of its kind that allows you to rotate the axes, enabling you to plot points in oblique coordinate systems—those with skewed (non-orthogonal) axes.

About the Point Plotter

Our versatile online point plotter is designed to graph data points in a coordinate plane—equipped with either a Cartesian or a polar coordinate system, or a generalized version created by axis rotation. Whether you are plotting in a Cartesian plane or a polar grid, you'll provide the points as ordered pairs, using the simple format described below.

A User-Friendly Cartesian & Polar Point Plotter

To graph points given by ordered pairs (a,b), simply enter them as a,b;

The point grapher instantly plots the points on the selected coordinate plane, and automatically updates the point graphs when you change the coordinate system or rotate either axis.

Additionally, our polar point plotter offers maximum flexibility, accepting angles θ in radians, degrees, or grads, which you can select with a single click.

Point Plotting Capability in Oblique Coordinate Systems

Unique feature: Plot points in a Cartesian plane where axes can intersect at any angle—not just 90°.

One way to rotate an axis is by using your mouse: Hold down the Alt key, click on the axis, and move your mouse to rotate it. Click again (with the Alt key pressed) to complete the action. For a guide to all mouse controls, refer to MouseMatics.

Our sophisticated online point plotter supports axis rotation. This enables you to plot points in an oblique coordinate system—where axes in a Cartesian plane intersect at non-perpendicular angles—or to draw a non-horizontal polar axis in a polar grid.

With this powerful capability, our oblique point plotter lets you rotate individual axes while automatically updating the point graphs, line segments, or polygons formed by connecting the points.

Entering Points into the Point Plotter

To use our online Cartesian and polar point plotter, simply enter the points (a₁,b₁),(a₂,b₂),... as a₁,b₁; a₂,b₂; ... In other words, separate the coordinates of each point by a comma and the points themselves by a semicolon. Note that parentheses are excluded, and blank spaces are optional (see the note below).

By default, points are plotted in the standard Cartesian plane. However, simply select the Polar checkbox, and our coordinate plotter will seamlessly switch to its built-in polar coordinate system. This means the components of your ordered pairs will be treated as polar coordinates—typically represented as (r,θ)—and plotted in the polar plane. Alternatively, you can explore point graphs in a generalized coordinate plane by rotaing axes.

Note: You can use constant expressions such as 1/2+sin(π/3) for point coordinates.

Example: 1,2; 3/4,4; -2,sin(π/6); (This will plot three points). If you choose degrees mode, you can simply type sin(30), as π/6 (radians) is equal to 30°.

Connecting Points

The point grapher allows you to connect points with line segments to form line graphs or polygons by pressing the Connect button. This toggle button will connect the points in the focused expression box. Press it again to Disconnect All the points.

Note: When connecting points, if the last point is followed by a semicolon, the point plotter will connect it to the first point, forming a (closed) polygon.