How to convert from Imperial to metric
I work with Centrial American companys who have a hard time with conversion from what I can work with (imperial) to their metric. Is there an easy way to convert back and forth?
Hope this helps..
Answered with a tutorial: https://grabcad.com/tutorials/how-to-convert-from-imperial-to-metric
Probably not what you want to hear but I would learn to draw in both Metric and Imperial. Converting units is ok for approximations but when you need things to be accurate the conversions will end up with so many decimal places that your models will upset the machine shop guys or end up not fitting correctly.
The best way I have found is to create 2 separate templates, one in Imperial and one in Metric. Otherwise when you start-up Auto CAD a "Startup" window should pop up. When this window opens select the start from scratch icon and below default settings it gives you the option of selecting either Imperial or Metric, but as I said before it is easier to have separate templates.
When you go to create your template files make sure to save them as .DWT (template) files. To open them you will need to select Use a Template (Third button from the left in the Startup dialog box). AutoCAD defaults the search to your hard drive where AutoCAD is installed in a folder called Templates.