Password Entropy Analyzer
Deep-dive cryptographic analysis of password strength using Shannon Entropy. Estimates crack times against modern GPU clusters.
100% Client-Side. Your input never leaves your browser.
🔑 Analyze Password
Entropy Strength None
Security Warnings
Enter a password to check for vulnerabilities.
Cryptographic Metrics
Shannon Entropy
0 bits
Character Pool
0
Length
0
Estimated Crack Time
Online Throttled
100 attempts/sec (Web Login)
0s
Offline Slow Hash
10,000 attempts/sec (bcrypt/Argon2)
0s
Offline Fast Hash (GPU)
100 Billion attempts/sec (MD5/SHA1)
0s
Note: Crack times assume an average-case scenario (50% of the search space). Modern botnets and quantum computing advances may reduce these times. Always use passwords with >80 bits of entropy.