Free Tool

Password Strength Checker

Check password strength with real entropy math. See crack-time estimates. Nothing is uploaded or stored.

Enter a password to test Show password

Privacy: the password is analyzed only in your browser with JavaScript. It is never sent anywhere.

How to use this tool

Strength is measured with entropy: pool size raised to password length.

Your password never leaves this page. Test freely.

Four random words are easier to remember and very strong.

These free tools cover the basics. For a real expert review of your website and Google visibility, claim a free manual audit.