Advanced password strength checker with real-time analysis: Get 0-100 security scores, crack time estimates, and personalized recommendations. Generate strong passwords instantly - protect your accounts with professional-grade security analysis for free!
Enter your password below for instant security analysis
Overall password security rating
Password requirements checklist
Time needed to crack this password
Tips to improve password strength
Enter a password to get security recommendations
Advanced password security analysis with comprehensive evaluation and recommendations
Instant password strength evaluation as you type, with live security scoring and feedback.
Comprehensive 0-100 scoring system based on multiple security criteria and best practices.
Accurate estimates for how long it would take to crack your password using different attack methods.
Detailed checklist showing which security requirements your password meets and which need improvement.
Personalized suggestions to strengthen your password based on current weaknesses and security gaps.
Built-in secure password generator with customizable length and character set options.
Responsive design that works perfectly on all devices with touch-friendly interface elements.
All password analysis happens locally in your browser - passwords are never sent to servers.
Common questions about password strength and security
A strong password should be at least 12 characters long and include a mix of uppercase letters, lowercase letters, numbers, and special characters. It should avoid common words, personal information, and predictable patterns.
Our scoring algorithm evaluates multiple factors including length, character diversity, entropy, common password patterns, and resistance to dictionary attacks. The score ranges from 0-100, with higher scores indicating stronger passwords.
Our estimates are based on current hardware capabilities and attack methods. Online attacks are slower due to rate limiting, while offline attacks assume the attacker has the password hash. Actual times may vary based on specific circumstances.
Yes! All password analysis happens locally in your browser using JavaScript. Your password is never transmitted to our servers or stored anywhere. When you close the browser, your password is completely removed from memory.
Absolutely! Password managers are the best way to create and store unique, strong passwords for every account. They eliminate the need to remember multiple complex passwords and significantly improve your overall security.
Change passwords immediately if there's been a security breach, if you suspect compromise, or if sharing with others. For strong, unique passwords, regular changing isn't necessary unless required by policy. Focus on using unique passwords for each account instead.