PC

Mac

Misc. Phones

Windows 7

Click on Start Icon.

Type "cmd" in Search programs and files box.

Click on cmd.exe

Type "ipconfig/all" and press enter.

Scroll up until you find:

Wireless LAN adapter network connection and look for Physical Address.

Ethernet Adapter Local Area Connection and look for the Physical Address                                                                                                            

Mac OS X

Click on the "Finder" icon in the dock to open a new Finder window. 

Go to the "Applications" section from the "Places" list on the left side of the Finder window. 

Open the "Utilities" folder and double-click on the icon labeled "Network Utility."

Go to the "Info" tab at the top of the Network Utility window. 

Open the "Network interface" drop-down menu and select the adapter you want to view.

Look in the "Hardware Address" field under the "Interface Information" section to find the MAC address for the network adapter you selected.

Windows Phone

Click on "Settings"

Select "About phone"

Click on More info

Look for MAC address

Androids

Click on "Settings"

Select "About phone"

Select "Status"

Look for "Wi-Fi MAC address"

 Windows XP 

Click on the Start button.

Click on Run and type "cmd".

Type "ipconfig/all" and press enter.

Scroll up until you find:

Wireless LAN adapter network connection and look for Physical Address.

Ethernet Adapter Local Area Connection and look for the Physical Address
 

 IPod/IPad/IPhone

Select the Settings Icon.

Click General.

Click  About.

Then scroll down until you see Wi-FI Address and Bluetooth. The "Wi-Fi Address” setting is your  MAC address.