Functions and relations you can plot
- Multiple Cartesian functions y = f(x), each with its own visible range and drawing style.
- Sideways functions x = f(y), with independent y-range limits.
- Parametric curves x(t), y(t) and polar curves r(t), including a configurable parameter interval.
- Equations and inequalities, together with multiple simultaneous graph objects.
Analysis and point-data tools
- Evaluate a function at exact inputs such as 1/3, sqrt(2), pi/6 or e/2.
- Show the derivative, tangent or normal line, and find zeros, extrema or stationary points.
- Calculate an integral, geometric area or arc length on an interval, with optional region shading.
- Trace points with the pointer, or enter point pairs, connect them and add a linear or quadratic trend line.
Axes, labels and annotations
- Set x/y bounds, grid visibility and style, axis visibility, major ticks and tick length.
- Control axis-number fonts and colors, O/x/y symbols, equal-axis scale or a custom x-to-y unit ratio.
- Choose radians or degrees, show a legend and add a title on the graph.
- Drag axis numbers and symbols independently; double-click axes, ticks, labels or inserted objects for precise editing.
Edit, save and export
- Use A to insert editable plain text or an Alpha Formula. Insert images from the device, and add Line or Arrow objects where those buttons are available.
- Select and drag objects directly. Double-click an object to edit it; image handles resize or rotate it, and Front/Back controls set its layer.
- Undo and Redo include drawing changes, object edits, table edits, inserted images and axis customizations.
- Save downloads a portable .ogp project containing Functions, Table, Shading, Revolution, Axes and their editable objects. HTML creates a launcher that restores the same saved scopes in a real OnlineGraphing.com tab.
- Open loads a saved .ogp project. PNG and Copy create raster output, while SVG remains vector-based and stays sharp when enlarged.
The Analysis and Points tabs may be hidden by the site administrator. Because .ogp files do not include current Analysis results or Points-tab entries, record or export important data separately.
Tip: save an .ogp project before making major changes so supported editable content can be restored later. The project file does not include Analysis results or entries from the Points tab.