🛡️ Password Strength Estimator
Type a password to get a rough strength estimate — computed entirely in your browser as you type. Nothing is transmitted, logged, or checked against any external breach database.
1. Password
These are rough, local estimates only. They use simple pattern heuristics (length, character variety, repeats, sequences, keyboard walks) and a small embedded list of ~250 extremely common leaked passwords — not a real breach-corpus check, not a full zxcvbn-grade model, and not a guarantee. A password can score well here and still be reused elsewhere, phished, or leaked by a service you trust.
2. Estimated crack time
Based on the estimated entropy below, assuming brute-force guessing at each rate. Real attackers often do much better than brute force (dictionaries, leaked-password lists, pattern rules) — treat these as an optimistic upper bound on how long a password would hold up, not a promise.
| Scenario | Guesses / second | Estimated time |
|---|