How Strong Is My Password? Crack Time Explained

💪Free Password Strength Checker
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Entropy in plain English

Each character multiplies the number of possible passwords. Length adds far more than complexity: 16 random lowercase letters beat 8 mixed characters by a huge margin.

What gets cracked instantly

Common passwords and words (password, qwerty, welcome), keyboard and number sequences (1234, asdf), repeated characters, names and years, and predictable substitutions like P@ssw0rd.

Test yours safely

Type it into the Password Strength Checker. It estimates entropy and crack time for a fast offline attack and suggests improvements – on your device, never sent anywhere.

Make it strong

Use 14-16+ random characters from a password manager, or 4-6 random words for passwords you must type. Never reuse passwords, and turn on two-factor authentication.

Frequently asked questions

How long would it take to crack my password?

It depends on length, randomness and how the site stores it; the checker assumes a fast offline attack.

Is a passphrase strong?

Yes, if the words are random.

Should I also check for leaks?

Yes – a strong password that leaked is still unsafe. Use the Password Breach Checker.