Password Generator

About This Tool

Password strength depends on length, complexity, and randomness. This password generator creates cryptographically strong passwords using the browser's built-in crypto.getRandomValues() API, which provides true randomness suitable for security-critical applications. You can customize length from 4 to 128 characters and toggle character types including uppercase letters, lowercase letters, numbers, and symbols.

The built-in strength meter gives you immediate visual feedback on your password quality. It evaluates entropy based on the selected character sets and length, displaying a score and label from Very Weak to Very Strong. The tool also keeps a history of generated passwords with pinning support, making it easy to reuse passwords you have previously generated without re-entering configuration.

Common Use Cases

• Creating strong, unique passwords for email, banking, and social media accounts
• Generating secure API keys and tokens for application authentication
• Creating recovery codes for two-factor authentication backup access
• Generating strong passwords for shared accounts in team password managers
• Creating application secrets and encryption keys for development projects
• Generating temporary one-time passwords for secure access grants

Pro Tips

• Use 16+ characters for important accounts like email and banking — every additional character exponentially increases cracking difficulty
• Always include all character types (uppercase, lowercase, numbers, symbols) for maximum entropy
• Use a password manager to store generated passwords securely instead of reusing passwords across sites
• Avoid using dictionary words, personal information, or common patterns like "password123"
• For maximum security on critical accounts, generate passwords of 24 characters or more

Frequently Asked Questions

How does the password strength meter work?

The strength meter evaluates your password based on its length and the variety of character types used. Longer passwords with mixed character sets score higher. The calculation considers bits of entropy, where each additional character multiplies the number of possible combinations.

What is the recommended password length?

For most online accounts, 12-16 characters is recommended. For highly sensitive accounts (email, banking, password managers), use 20-32 characters. Passwords over 64 characters rarely improve practical security.

Are generated passwords truly random?

Yes. This tool uses crypto.getRandomValues(), a cryptographically secure random number generator provided by the browser. It is suitable for generating passwords, encryption keys, and other security-sensitive data.

Should I use special characters in my passwords?

Yes. Including symbols (such as !, @, #, $, %) significantly increases the character set size, which greatly increases the number of possible combinations and makes brute-force attacks much less feasible.

Need to hash passwords? Try the Hash Generator. Part of the FreeQ.One tools suite.