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Password Entropy & Strength Estimator (Shannon Bits)

Client-Side Sandbox
100% In-Browser Privacy All computations and file processing run strictly in your browser. Zero server data uploads.

Evaluate cryptographic Shannon entropy bits, character pool size, and estimated brute-force crack time against GPU attacks.

NIST Shannon Entropy Cryptanalysis

Evaluate the true mathematical entropy in bits, charset pool size, and estimated brute-force crack time against modern GPU clusters.

Entropy (Bits) 78.5 Bits
Strength Level Very Strong
Charset Pool (R) 94 Chars
Est. Brute-Force Time 1,200 Years
Estándares verificados
Resultados precisos y deterministas Probado según especificaciones oficiales para obtener resultados reproducibles y fiables.

Cómo usar esta herramienta

  1. Configure your utility settings, input parameters, or generator options above.
  2. Click Generate, Start, or toggle options to initiate the utility.
  3. Review generated results or timers, then click Copy or Download to export.

Formatos admitidos, límites y privacidad

Entradas y límites: Browser client-side processing limits apply (e.g. max recommended image size 25MB).

Cero recopilación de datos: Esta herramienta se ejecuta al 100% dentro del motor JavaScript del navegador del cliente. Ninguna pulsación de teclas, valores, archivos o resultados calculados se almacenan o transmiten a ningún servidor remoto.

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