Password Strength Checker
Check for common words, repeats and predictable patterns, entirely in your browser. A strength estimate is guidance, not a guarantee.
Input stays on this page. Nothing is sent or saved. Check up to 256 characters; emoji and some other characters count as two.
Add names, brands, locations, usernames, or project words that should not appear in the password.
Result
Rating
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Estimate
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Length
0 characters
Pattern review
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Privacy Note
Uses a locally bundled zxcvbn-ts estimator with English and common-password dictionaries. Other languages and personal context may be missed. No checker can predict an exact crack time. Use a unique password from a password manager and enable multifactor authentication.
Checks
- Add a password to see checks.
Ready.