Password Strength Checker
Analyze password security with entropy calculation, pattern detection, and crack time estimation
Passwords are analyzed locally and never sent to any server.
Password Strength
Very Weak0/4
Entropy
0 bits
Crack Time
-
Length
0 chars
0 unique
Password Composition
Lowercase letters (a-z)
Uppercase letters (A-Z)
Numbers (0-9)
Special characters (!@#$)
Suggestions
Enter a password to analyze
Strength Reference
Very Weak< 20 bits
Weak20-39 bits
Medium40-59 bits
Strong60-79 bits
Very Strong80+ bits
Frequently Asked Questions
How is password strength calculated?
We calculate entropy based on character variety and length, then estimate crack time.
Is my password sent to a server?
No, all analysis is done locally in your browser. Your password never leaves your device.
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