Analyze password charset and calculate entropy bits from detected character types.
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Quick answers to common questions
Entropy = length × log₂(charset size). It estimates how many bits of randomness a password has.
80+ bits is reasonable for most accounts. 128+ bits is excellent.
We inspect your password for lowercase, uppercase, digits, and symbols, then sum the pool sizes of each type present.
No. All calculations run in your browser.
Your data is processed entirely in your browser. Nothing is sent to any server.