Check the label on your router or modem
Open your router’s admin page and look for Wi-Fi password, wireless key, or security key
On Windows, open Network Settings or Control Panel and view saved Wi-Fi properties
On Mac, open Keychain Access and search for your Wi-Fi network name
On iPhone or iPad, check saved Wi-Fi password in Settings if available
On Android, open Wi-Fi settings and view the saved network password if supported
Ask the person or provider who set up the network
Reset the router if you cannot recover the key and need to create a new one