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Password Strength & Entropy Analyzer

Password Strength Analyzer

Advanced entropy calculation with real-time crack time estimation. Secure your accounts with data-driven insights.

🔐 Password Analysis
Enter a password
0/100
0
Bits of Entropy
Shannon Entropy
0
Character Pool
Unique symbols
0
Length
Characters
0
Combinations
Possible passwords
a-z
Lowercase
0 chars
A-Z
Uppercase
0 chars
0-9
Numbers
0 chars
#@!
Symbols
0 chars
⏱️

Estimated Crack Time

Time required to brute-force your password at different attack speeds

Online Attack
1,000 guesses/sec (throttled)
Instant
Offline Attack
100 billion guesses/sec (GPU)
Instant
Massive Array
100 trillion guesses/sec (supercomputer)
Instant
Entropy Calculation
E = L × log₂(R)
Where L = 0 (length) and R = 0 (pool size). Entropy = 0 bits
💡 Security Recommendations
📏
Length Matters Most
Each additional character exponentially increases security. Aim for at least 14 characters.
🔀
Use All Character Types
Combine uppercase, lowercase, numbers, and symbols to maximize your character pool (R).
🎲
Avoid Patterns
Sequential characters (123, abc) and keyboard patterns (qwerty) drastically reduce entropy.
🎯
Target 80+ Bits
For important accounts, aim for 80+ bits of entropy (≈16 chars with mixed types).
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