Use the Project Units dialog to set project units. 
 Video: Change Project Units
- Click Manage tab
Settings panel
 Project Units. 
 
- In the Project Units dialog, select the discipline. 
 
- Click the value in the Format column to change the display value for that unit type. 
  
The Format dialog displays. 
  
 
 
- Specify Units, if necessary. 
 
- For Rounding, select an appropriate value. If you select Custom, enter a value in the Rounding increment text box. 
 
- For Unit symbol, select an appropriate option from the list. 
 
- Optionally select: 
  
- Suppress trailing 0’s 
		
When selected, trailing zeros do not display (for example, 123.400 displays as 123.4). 
		
 
	  
- Suppress 0 feet 
		
When selected, does not display the 0 foot value (for example, 0’ - 4” displays as 4”). This option is available for Length and Slope units. 
		
 
	  
- Show + for positive values 
	 
 
- Use digit grouping 
		
When selected, the Decimal symbol/digit grouping option specified in the Project Units dialog is applied to the unit value. 
		
 
	  
- Suppress spaces 
		
When selected, suppresses spaces around feet and fractional inches (for example, 1’ - 2” displays as 1’-2”). This option is available for Length and Slope units. 
		
 
	  
 
 
- Click OK. 
 
 
 
  Note: Changing Project Units changes the display of units in the project but will not change the names of families loaded into the project. For example a wall type with the name "4" Masonry" will not change when the project units are changed to metric.