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Password Checker

Analyze your password's complexity and strength securely.

100% Private: Your password checks happen locally in your browser. We never see or store your inputs.

Advanced Password Analysis

  • Entropy Calculation: Measure password randomness using entropy bits for accurate strength assessment.
  • Character Type Analysis: Track usage of uppercase, lowercase, numbers, and special characters.
  • Crack Time Estimation: Get realistic estimates of how long it would take to crack your password.
  • Common Password Detection: Instantly identify if your password is in common weak password databases.
  • Actionable Suggestions: Receive specific recommendations to improve your password security.

Perfect For

  • Personal Security: Test passwords before using them for important accounts and services.
  • Password Policy Compliance: Verify passwords meet organizational security requirements.
  • Security Education: Learn what makes a strong password through real-time feedback.
  • Developer Testing: Validate password strength algorithms and user input validation.