Password Strength Checker
Analyze your password strength in real-time. Get a score, detailed feedback on what makes your password strong or weak, and estimated time to crack.
Enter Password
Security Score
Enter a password to analyze
How Password Strength Is Calculated
The checker evaluates length, character diversity (uppercase, lowercase, digits, special characters), absence of repeated characters, and resistance to common patterns. Crack time estimates assume 100 billion guesses per second. All analysis is performed locally in your browser — your password is never sent anywhere.
About this Calculator
Passwords are your first line of defense online. This strength checker evaluates your password based on length, character variety (uppercase, lowercase, numbers, symbols), and common pattern avoidance. Use it to ensure your passwords meet modern security standards.
Privacy Note: All calculations are performed locally in your browser. No data is ever sent to a server or third party.