Change the Unit Of Measurement in Mac OS X

Essentially, the unit of measurement used by Mac OS X is determined by the Language & Region settings. Choices available are US and Metric. In this tutorial, we'll show you how you can change the units from US to Metric, or vice versa.

1. In the Apple menu, select the Mac | System Preferences menu option, as shown in Figure 1.
   
   
   Figure 1: System Preferences option selected within the Apple menu
2. This opens the System Preferences window, shown in Figure 2. Click on the Language & Region option that you can see highlighted in red in Figure 2.
   
   
   Figure 2: Language and Region option within the System Preferences window
3. This opens the Language & Region window as shown in Figure 3. Click on the Advanced option (highlighted in red in Figure 3).
   
   
   Figure 3: Language & Region window
4. Within the resultant window, make sure that the General tab is active as shown in Figure 4. Click on the Measurement units option (highlighted in red in Figure 3).
   
   
   Figure 4: Measurement units option
5. This opens a flyout menu with two options: Metric and US as shown in Figure 5. The option with a tick mark in front of it is the active measurement unit. In Figure 5 you can see that Metric is the active measurement unit. Select the required unit to change from Metric to US, or vice versa.
   
   
   Figure 5: Choose between Metric and US measurement unit
6. Click the OK button to save the settings.