Password Strength Checker

Test your password security in real-time. Get instant feedback on password strength, common password detection, and time-to-crack estimates.

Back to All Tools

Check Password Strength

Enter a password to begin
Length
0
Character Types
0/4
Score
0/100

Generate Secure Password

Need a strong password? Generate a cryptographically secure random password.

Advertisement

Understanding Password Security

What Makes a Strong Password?

A strong password should be at least 12 characters long and include a mix of uppercase letters, lowercase letters, numbers, and symbols. Avoid common words, patterns, and personal information.

Common Password Mistakes

  • Using dictionary words or common phrases
  • Repeating characters (e.g., "aaa", "111")
  • Sequential patterns (e.g., "123456", "qwerty")
  • Personal information (names, birthdays)
  • Short passwords (under 8 characters)

Password Best Practices

  • Use a unique password for each account
  • Enable two-factor authentication (2FA)
  • Use a password manager to store passwords securely
  • Change passwords if a service reports a breach
  • Never share passwords via email or text

How This Tool Works

Our password strength checker analyzes your password locally in your browser. Your password is never sent to our servers. We check for length, character variety, common patterns, and compare against a database of commonly used passwords.

Privacy & Security Notice

Your password is completely private. All password analysis happens locally in your browser. Your password is never transmitted over the internet or stored on our servers. This tool is provided for educational purposes to help you understand password security.