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Password strength analyser

Discover the strength of your password with this client-side-only password strength analyser and crack time estimation tool.

How to Use

  1. Step 1: Type or paste your password into the input field.
  2. Step 2: The strength meter updates in real-time as you type.
  3. Step 3: Review the score, crack-time estimate, and improvement suggestions.

Frequently Asked Questions

What makes a password strong?

A strong password is long (12+ characters), uses a mix of uppercase, lowercase, numbers and symbols, and avoids common words.

Is my password sent to a server?

No. All analysis is done entirely in your browser. Your password never leaves your device.

What makes a password truly secure?

A secure password should be at least 12 characters long, combine uppercase and lowercase letters, numbers, and symbols, and avoid dictionary words or personal information. Even better: use a password manager to generate 20+ character random passwords and use a unique password for every site, combined with two-factor authentication (2FA).

What makes a password truly secure?

Characteristics of a truly secure password: at least 16 characters (longer is better); high randomness (not a word or predictable pattern); a mix of uppercase, lowercase, digits, and special characters. The safest approach is using a password manager (Bitwarden, 1Password) to generate and store completely random, high-strength passwords — using a different password for every site. A passphrase (4-5 random words) is also a good balance of security and memorability.