See how strong a password is — its entropy in bits and an estimated crack time — computed entirely in your browser. Your password is never sent anywhere.
Strength is estimated from entropy: the size of the character set you used (lowercase 26, uppercase 26, digits 10, symbols ~33) raised to the password’s length, expressed in bits as length × log₂(pool size). Crack time assumes a fast offline attacker at 10 billion guesses/second. It also flags weak patterns — too short, all one character class, repeats and simple sequences. This is a guide, not a guarantee, and nothing you type is transmitted.
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