Password Strength Checker
Check password length, character diversity and obvious repeated or common patterns locally.
Workspace
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Local heuristic only: this does not check leaked-password databases or guarantee security. Never reuse a password.
How to use this tool
Enter a password to see its checks and suggestions. Prefer a long, unique password for each account.
What to know
The rating is a heuristic, not a breach lookup or a guarantee against cracking. Your password is not sent to an external service.
Frequently asked questions
How do I use Password Strength Checker?
Enter a password to see its checks and suggestions. Prefer a long, unique password for each account.
What should I check before using the result?
The rating is a heuristic, not a breach lookup or a guarantee against cracking. Your password is not sent to an external service.
Is an account required?
No. This tool is free and the calculation takes place in your browser.