Password Strength Checker
Estimate password strength with simple heuristics.
Password Strength Checker scores length and character variety. It is a local heuristic — not a breach check.
Frequently Asked Questions
Does my data leave the browser?
Processing stays in your browser. Nothing is uploaded to ToolWorld servers.
Does this check Have I Been Pwned?
No. Scoring is local only.
Is “strong” enough?
Use a unique password per site and a password manager regardless of the score.