Encryption Strength Calculator

// cryptographic strength instrument

Encryption strength calculator

Estimate the entropy of a password or key, and how long it would take to exhaust the keyspace at different attack speeds. Nothing you type here leaves this page.

a-z A-Z 0-9 symbols
0
bits of entropy
04080128192256+

Crack times assume brute force against the full keyspace on average (half the total space searched) and are illustrative — real attacks vary with hashing scheme, salting, and target implementation.