Why your Wi-Fi password needs to be strong
With WPA2-Personal, anyone within radio range can capture the 4-way handshake when a device connects, take it home, and try passwords offline as fast as their GPUs allow — your router never notices. A short or dictionary-based Wi-Fi key can fall in minutes. WPA3-Personal (SAE) blocks this offline attack, but many networks still run in WPA2/WPA3 mixed mode for older devices, so the password still matters.
Wi-Fi password rules
- Length: WPA2 and WPA3 passphrases must be 8 to 63 printable ASCII characters. Alternatively, WPA2 accepts a raw 64-digit hexadecimal key.
- Recommended: at least 16 random characters; this tool defaults to 20.
- Character set: letters, digits and a small set of simple symbols. Some smart-home devices and printers struggle with quotes, backslashes or spaces, so those are excluded.
- Easy to read is on by default — no
0/Oor1/l/Ito mix up when reading from the sticker.
How to change your Wi-Fi password
- Connect to your router’s admin page — usually
192.168.0.1,192.168.1.1or an address printed on the router — or open the router’s mobile app. - Sign in. If the admin password is still the factory default, change that too (use the strong password generator).
- Go to Wireless / Wi-Fi / WLAN settings and set security to WPA3-Personal, or WPA2/WPA3 if you have older devices. Avoid WEP and WPA (TKIP).
- Paste the generated password into the Password, Passphrase, Network key or Pre-shared key field and save.
- Reconnect your devices — or make it painless with a Wi-Fi QR code.
Guest networks
Give visitors a separate guest network with its own password, so your main password never has to be shared. Guest networks usually isolate visitors from your computers, printers and smart-home devices. Change the guest key whenever you like — it doesn’t affect your own devices.
Last updated: · Reviewed by the Password Generator team