How to modify the corner radius on rounded rectangle in Illustrator?


I always ended up just creating a new rounded rectangle if the existing one don't work. Is there a way to modify the corner radius without having to create a new shape?

I know I can modify the bezier handle manually one-by-one, but I can't figure out how to do this in a more accurate way for all 4 corners.

12/20/2016 11:59:00 PM

Accepted Answer

In the new Adobe Illustrator CC, you can use 2 easy methods to change the corner radius of a rounded corner rectangle that has already been drawn:

1. By moving the round handles

Simply hold and drag the round blue handles in each corner.

How to change the corder radius of a rounded rectangle

2. By going in the Shape Options (more precise)

You can change the border radius of all four corners with precision by using the Shape Options and simply enter a new measurement for your corners.

To change only one corner or give a different corner radius value to each of them, click the chain in the middle and fill the corner radius field for each corner.

How to change numerically the corners of a rounded rectangle

8/18/2015 6:28:00 AM

It seems like the best way is to use the Stylize/Round Corners effect on a regular rectangle. This way the corner radius is changeable and independent of the rectangle transform property.

With this method, the Appearance panel will have a Round Corners setting for any round rectangle paths. This will allow you to edit the corner radius for existing shapes.

Appearance Panel with Round Corners