Password Strength Checker
Entropy, crack-time estimate and plain-English advice.
Everything is computed in your browser — the password never leaves this page. Estimates assume an attacker at 1011 guesses/second (modern hardware), which is why a long passphrase often beats a short “complex” password.
Как пользоваться
- Всё работает локально в браузере: данные не загружаются, аккаунт не нужен.
Описание
Estimates entropy in bits from character classes and uniqueness, flags common dictionary patterns, and translates the result into an offline crack-time estimate at roughly a hundred billion guesses per second.
The headline finding matches most security guidance: length beats symbol-spice. A 16-character passphrase usually beats an 8-character password with everything in it.
Всё работает локально в браузере: данные не загружаются, аккаунт не нужен.
Embed this tool
Customize and copy an iframe. Linking back helps both sites.