Get the dimensions you need - download and import into your favorite graphic software or print a button layout for reference. 

These files are in PDF format.  If you don't have graphics software you can view and print these layout files using a free version Adobe Acrobat Reader to access them.  There is a link at the bottom of this page to get the latest free version of  Adobe Acrobat Reader.

Round Button Layouts

1" Diameter Round Button Layout

1.5" Diameter Round Button Layout

2.25" Diameter Round Button Layout

3" Diameter Round Button Layout

3.5" Diameter Round Button Layout

6" Diameter Round Button Layout

Square, Diamond,Rectangular, and Oval Button Layouts

2" Square Button Layout

2" Diamond Button Layout

2x3" Rectangular Button Layout (width x height)

3x2" Rectangular Button Layout (width x height)

1.5x4.5" Rectangular Button Layout (width x height)

4.5x1.5" Rectangular Button Layout (width x height)

2.75x1.75" Oval Button Layout (width x height)