If you have a MacBook or any other Apple computer and it’s currently connected to this Wi-Fi network, finding the saved password is easy. First, open the Finder app, then click the Applications entry in the left-hand pane. From here, open the Utilities folder in the main window.
Next, launch the “utilities”, which has an icon that looks like a set of keys.
From here, make sure “System” is selected and “Passwords” is highlighted as the category in the left-hand pane. Next, simply locate your router in the list, then double-click the entry.
In the window that pops up next, tick the box next to “Show password,” and your Wi-Fi password will be displayed. You will probably have to input your admin username and password in order to unlock it.