AutoCAD

How to Make Rectangle with Rounded Corners in AutoCAD?

Understanding Rounded Corners in AutoCAD

Creating shapes with rounded corners is a valuable skill in Autodesk’s AutoCAD software, particularly useful for designs requiring a more stylized or ergonomic appearance. Below is a detailed guide on how to create a rectangle with rounded corners in AutoCAD 2025.

Steps to Create a Rectangle with Rounded Corners

  1. Open AutoCAD 2025: Launch your AutoCAD application and open a new or existing drawing file where you wish to create the rounded rectangle.

  2. Select the Rectangle Tool: Navigate to the Home tab on the ribbon interface. Look for the "Rectangle" tool, typically represented by a rectangle icon. Alternatively, you can type RECTANGLE in the command line and hit Enter.

  3. Specify First Corner: Click on the drawing area to set the location of the first corner of your rectangle. This point will serve as one vertex of your rectangle.

  4. Define the Opposite Corner: Move your cursor to create the rectangle’s dimensions. Click again to select the opposite corner, or you can specify dimensions directly in the command line by typing in the width and height separated by a comma (e.g., 5,3 for 5 units wide and 3 units high).

  5. Use the Fillet Command: With your rectangle selected, go to the Modify panel. Click on the “Fillet” button, which is usually found above the Modify options. This tool is essential for rounding the corners.

  6. Set the Fillet Radius: In the command line, after initiating the Fillet tool, AutoCAD will prompt you to specify the fillet radius. Enter the desired radius value for the rounded corners. If you are unsure, start with a smaller radius and adjust as necessary.

  7. Round the Corners: Once the radius is set, click on one of the rectangle’s corners. AutoCAD will automatically create a rounded corner based on the specified radius. Repeat this for each corner of the rectangle to achieve a consistent rounded effect.

  8. Finalize Your Design: After rounding all corners, double-check your shape to ensure it meets your design criteria. You may adjust the radius or dimensions as necessary by repeating the above steps.

Alternative Methods for Creating Rounded Corners

In addition to using the Fillet command, another method to create rounded rectangles in AutoCAD involves using the "Oval" command. This is useful when constructing custom shapes or more complex designs:

  1. Use the Arc Tool: Instead of applying fillets, you can also manually draw arcs at the corners using the Arc tool.

  2. Trim Excess Lines: If you opted for arcs, you would need to carefully trim away the corners of the rectangle to maintain a clean appearance.

Frequently Asked Questions (FAQ)

1. Can I adjust the radius after creating the rounded corners?
Yes, you can adjust the fillet radius by selecting the rounded corners and changing the radius value in the command line, or by using the Fillet tool again.

2. Is there a shortcut for the Fillet command in AutoCAD?
You can use the shortcut F to quickly access the Fillet command from the command line once you are in a drawing session.

3. Are there specific situations where rounded corners are preferred over sharp corners?
Rounded corners are often preferred in designs needing a softer look, reducing the risk of injury in physical products, and providing a more modern aesthetic in graphical user interfaces.

About the author

Wei Zhang

Wei Zhang

Wei Zhang is a renowned figure in the CAD (Computer-Aided Design) industry in Canada, with over 30 years of experience spanning his native China and Canada. As the founder of a CAD training center, Wei has been instrumental in shaping the skills of hundreds of technicians and engineers in technical drawing and CAD software applications. He is a certified developer with Autodesk, demonstrating his deep expertise and commitment to staying at the forefront of CAD technology. Wei’s passion for education and technology has not only made him a respected educator but also a key player in advancing CAD methodologies in various engineering sectors. His contributions have significantly impacted the way CAD is taught and applied in the professional world, bridging the gap between traditional drafting techniques and modern digital solutions.