Inch to Metric and Scale Conversion Chart Link

[Jeffry Fontaine]

Courtesy of Evergreen Scale Models, the same company that provides us with all of those wonderful structural shapes and plastic card stock. 
The web page has a link to a page that will give you the ability to determine Inch to Scale Inch and Inch and Millimeter to Centimeter. 

Without droning on any further, here is the link to the Conversion Chart Page.