password strength checker
type a password to see its entropy, estimated crack time and weak patterns. the check happens in your browser only.
runs on your device · free · no sign-up
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frequently asked questions
how is strength measured?
we estimate entropy from the character pool and length, then subtract for common words, repeats, sequences and keyboard patterns.
is it safe to type my password here?
the check runs entirely in your browser with no network requests. still, avoid testing a password you use on live accounts.
what crack time is shown?
an offline estimate at 10 billion guesses per second, a fast GPU attack on a fast hash.