Quick Reference
See Also

Rounds and fillets the edges of objects.

Access Methods

 Ribbon:  Home tabModify panelFillet.Not available on the ribbon in the current workspace.
 Menu: Modify  FilletNot available in menus in the current workspace
 Toolbar: Modify 


In the example, an arc is created that is tangent to both of the selected lines. The lines are trimmed to the ends of the arc. To create a sharp corner instead, enter a radius of zero.

You can fillet arcs, circles, ellipses, elliptical arcs, lines, polylines, rays, splines, and xlines.

List of Prompts

The following prompts are displayed.

Current settings: Mode = current, Radius = current

Select first objector [Undo/Polyline/Radius/Trim/Multiple]: Use an object selection method or enter an option

First Object

Selects the first of two objects required to define a 2D fillet.

Select second object or shift-select to apply corner: Use an object selection method or hold down Shift and select an object to create a sharp corner

If you select lines, arcs, or polylines, their lengths adjust to accommodate the fillet arc. You can hold down Shift while selecting the objects to override the current fillet radius with a value of 0.

If the selected objects are straight line segments of a 2D polyline, they can be adjacent or separated by one other segment. If they are separated by another polyline segment, FILLET deletes the segment that separates them and replaces it with the fillet.

More than one fillet can exist between arcs and circles. Select the objects close to where you want the endpoints of the fillet.

FILLET does not trim circles; the fillet arc meets the circle smoothly.


Reverses the previous action in the command.


Inserts fillet arcs at each vertex of a 2D polyline where two line segments meet.

Select 2D polyline:

If one arc segment separates two line segments that converge as they approach the arc segment, FILLET removes the arc segment and replaces it with a fillet arc.


Defines the radius of the fillet arc.

The value you enter becomes the current radius for subsequent FILLET commands. Changing this value does not affect existing fillet arcs.


Controls whether FILLET trims the selected edges to the fillet arc endpoints.


Rounds the edges of more than one set of objects.