Centimeters? What is this?

If you have recently opened Revit 2009, you will find it defaults to a metric template when beginning a new project. This can be quite irritating when you would rather be dealing with the imperial template, you know, feet and inches instead of millimeters. You can always select the imperial templates when you begin a new project, but sometimes you just forget and it's far more convenient to changes your settings.

To change settings:

Select Settings
Select Options
Select File Locations
Select File "Imperial Templates"
Select default.rte

If you find your project is already in the metric template, you can change the settings by:

Select Settings
Select Project Units
Change to desired Units