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Password Strength Checker

See how strong a password is, what makes it weak and how long an attacker could need to guess it. Nothing is sent anywhere.

Checked on your device only. Nothing is sent or saved.

Time to crack (offline attack):

  • 12 or more characters
  • Lower case letters
  • Upper case letters
  • Numbers
  • Symbols

Need a strong one? Generate a password.

How to use the Password Strength Checker

  1. 1

    Type a password (it is checked on your device only).

  2. 2

    Read the rating, the estimated time to crack it and the tips.

  3. 3

    Need a better one? Use the password generator.

Frequently asked questions

Is my password sent anywhere?

No. The check runs entirely in your browser and nothing is stored. Still, prefer testing a similar password rather than your real one.

How is the crack time estimated?

From the size of the password and its character types, assuming an offline attack at 10 billion guesses per second, minus penalties for common words, sequences and years. It is an estimate, not a guarantee.

What makes a strong password?

Length matters most: 14 or more characters, or 4 to 5 random words. Use a different password for every site and a password manager.

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