Users have the ability to set the Units of Measurement for various features in one universal location.  

The settings available are:
 

• Use Metric Units - Allows the  user to enable Metric units as the default for tracking and display (map distances) distances
• Line Units - Allows the user to specify what unit of measurement line features will use.  Custom units can be added.
• Area Units - Allows the user to specify what unit of measurement area features will use

• Map View
• Draw and Measure
• Settings
• My Maps