Free Online Password Generator & Strength Analyzer

Create cryptographically secure passwords and analyze their strength instantly. All processing happens in your browser - your passwords are never stored, logged, or transmitted to our servers.

Secure Password Generator

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Specify custom special characters to use in password generation

Password Strength Analyzer

Advanced Security Features

Our password generator includes advanced security features like entropy calculation, crack time estimation, and strength analysis to help you understand the security level of your passwords.

Multiple Password Types

Generate different types of passwords including standard random passwords, memorable passwords, passphrases, and PIN codes for various use cases.

Export & Management

Export generated passwords to text files and copy them to clipboard for easy integration with password managers and other security tools.

Real-time Strength Analysis

Get instant feedback on password strength including entropy calculation, estimated crack time, and specific recommendations for improvement.

What Makes a Strong Password?

A strong password is your first line of defense against cyber attacks, data breaches, and unauthorized access. It should be complex enough to resist automated cracking attempts, brute force attacks, and dictionary attacks while remaining manageable for your daily use.

  • At least 12 characters long (16+ recommended for high-security accounts like banking and email)
  • Uses a mix of uppercase, lowercase, numbers, and special characters to maximize entropy
  • Avoids common words, patterns, personal information, and predictable sequences
  • Different for every account and service to prevent credential stuffing attacks

Common Use Cases

  • Website and social media accounts
  • Database and system administration
  • WiFi networks and WPA/WPA2 security
  • Enterprise and corporate systems
  • Mobile apps and device encryption

Security Best Practices

  • Use a unique password for every account to prevent credential stuffing
  • Consider using a reputable password manager for secure storage
  • Enable two-factor authentication when available for additional security
  • Update passwords regularly, especially after security breaches
  • Never share passwords or store them in plain text files

Technical Information & Security Standards

Password Entropy & Security Metrics

Entropy measures password randomness in bits, indicating the number of possible combinations. Higher entropy means exponentially more possible combinations and stronger security against brute force attacks. A password with 50+ bits of entropy is considered secure against most modern attacks, while 80+ bits provides excellent security for high-value accounts.

Security Standards Compliance

Our password generator follows industry standards and best practices from NIST SP 800-63B, OWASP Authentication Cheat Sheet, and other security organizations. Generated passwords comply with most enterprise security policies and regulatory requirements including GDPR, HIPAA, and SOX compliance.

Official Security References
Additional Security Resources

Frequently Asked Questions

Our password generator uses cryptographically secure random number generation to ensure maximum unpredictability. Passwords are generated using the Web Crypto API when available, falling back to a secure pseudo-random number generator. Each password is analyzed for entropy and strength before being presented to you.

Absolutely. All password generation and analysis happens entirely in your browser using client-side JavaScript. No passwords are ever sent to our servers, stored in databases, or logged in any way. You can even use this tool offline by saving the page. Your passwords never leave your device.

For most accounts, 16-20 characters provide excellent security. For high-value accounts (banking, email, work systems), consider 24+ characters. For system passwords and enterprise use, follow your organization's password policy requirements. Longer passwords with high entropy are always more secure.