Password Strength Checker

The Password Strength Checker scores any password from 0-100 based on its estimated entropy, shows the time it would take to brute-force at 10 billion guesses per second, and walks through a quality checklist covering length, character classes and common passwords.

The gauge and checklist update live as you type. Because analysis runs entirely in your browser, your password never leaves the device - which is exactly what a password tool should do.