ToolNest

Password Strength Checker

How strong is your password?Runs locally · nothing uploaded

  • At least 12 characters
  • Lowercase letters
  • Uppercase letters
  • Numbers
  • Symbols
  • Not a common password
  • No sequences like 123, abc, qwerty
  • No repeats like aaa or 111

Checked entirely in your browser; the password is never sent or stored. This is an estimate — the safest approach is a unique random password per site plus two-factor authentication.

Also works as:password checkerpassword security testhow secure is my password

How to use

  1. 1Type a password.
  2. 2Read the strength level and crack-time estimate.
  3. 3Fix any failed checks.

FAQ

Is it safe to type my password here?

Nothing leaves your browser. Still, consider testing a password with a similar structure rather than your real one.

What makes a strong password?

12+ characters, mixed character types, no common words or personal info, and a different one for every site.