Free Password Strength Checker
Test any password's strength · entropy, estimated crack time, and detection of common patterns and dictionary words.
Frequently asked
Is it safe to type my real password here?
Yes. The analysis runs entirely in your browser using JavaScript · your password is never transmitted, logged, or stored. Even so, for a password you actively use, changing it after testing anywhere is good hygiene.
How is crack time estimated?
From the password's entropy (character set size and length) against a fast offline attacker doing about 10 billion guesses per second, with penalties for common patterns, repeated characters, and dictionary words.
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