/password-strength-checker
Password Strength Checker
Check how strong a password is, estimated entirely in your browser.
Estimated strength
Enter a password~0 bits of entropy
Nothing you type here is sent anywhere, it is only checked in your browser. This is a rough estimate based on length and character variety, not a full breach-database or pattern check.
About Password Strength Checker
Password Strength Checker estimates how hard a password would be to guess based on its length and which character types it mixes, expressed as an approximate entropy in bits alongside a plain strength label.
Use this to sanity check a password you are about to start using somewhere important, or to see concretely why a short or simple password is weaker than it might feel.
This is a rough estimate based on character variety and length, not a real breach-database check or a pattern analyzer, so a password can score well here and still be a bad choice if it is a real word or a pattern like a keyboard walk. Nothing typed here is sent anywhere, it is checked entirely in your browser.