Password Strength Checker
Explore how length, repetition, and predictable patterns affect a password. Analysis runs locally in your browser.
Privacy caution: Use a made-up example, not a real password. Although this tool does not send or save the text, entering actual secrets into websites is a risky habit. Browser extensions or other software may still observe what you type.
No account, password submission, breach lookup, or password storage. No strength-checker analytics events are sent.
What does this score mean?
This is an educational heuristic, not a cracking simulation or a security guarantee. A long password based on a common phrase or personal information may still be weak. The tool cannot determine whether a password has been exposed in a breach.
For real accounts, prefer unique passwords generated randomly and stored in a reputable password manager. Enable multi-factor authentication where available. Read the strong password guide or generate a new password.