Password Strength Checker

Check password length, character variety, and predictable patterns.

Your password is analysed only in this browser tab. It is never uploaded, logged, or saved by this tool.

This is a practical estimate, not a guarantee. Real resistance depends on how passwords are stored, attacker knowledge, reuse, and whether multi-factor authentication is enabled.

Estimated strength

Very weak

~0 bits estimated entropy

Entropy is a rough upper-bound estimate with penalties for detected patterns; it is not a crack-time prediction.

Checks

At least 14 characters
Uppercase and lowercase letters
At least one number
At least one symbol
No detected common patterns

Pattern analysis

Enter a password to see specific warnings.

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