Password Strength Checker
This tool has been merged into the Password Generator.
All strength analysis is now in the Password Generator
Generate a password and see entropy, crack times, requirements, and suggestions instantly.
FAQ
Frequently asked questions
How is password strength calculated?
Length, character variety, and common-pattern detection combine into a strength score with suggestions.
Is my password sent anywhere?
No, the check runs entirely in your browser and your password never leaves your device.
Is the strength checker free?
Yes, completely free with unlimited checks.
What makes a password strong?
Length plus a mix of upper and lowercase letters, numbers, and symbols — ideally over 60 bits of entropy.
Can I test multiple passwords?
Yes, type or paste a new password any time to get an instant fresh analysis.