Password Generator — Create Strong, Secure Passwords 

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What is a password generator?

A password generator is a tool that creates random, secure passwords using a combination of uppercase letters, lowercase letters, numbers, and special symbols. Strong passwords are essential for protecting your online accounts from unauthorized access.

How does a password generator work?

The generator randomly selects characters from the chosen character sets (uppercase, lowercase, numbers, symbols) to build a password of the specified length. It ensures at least one character from each selected type is included for maximum security.

What makes a strong password?

A strong password has high entropy, meaning it is difficult to guess or crack. Key factors include length (at least 12 characters), diversity of character types, and randomness. Avoid using dictionary words, personal information, or common patterns like "123456".

How long should a password be?

Security experts recommend passwords of at least 12-16 characters. Longer passwords are exponentially harder to crack. A 16-character password with mixed characters would take billions of years to brute-force with current technology.

How is password strength calculated?

Password strength is measured by entropy, calculated as the password length multiplied by the logarithm (base 2) of the character pool size. For example, a 16-character password using all four character types (uppercase, lowercase, numbers, symbols — about 94 characters) has approximately 105 bits of entropy, which is considered very strong. For a deeper look at statistical measures like entropy distributions, our z-score calculator can help you understand how values compare across a distribution. You can also use the percentage calculator to quickly see how much more secure a longer password is relative to a shorter one.

How should you manage your passwords safely?

  • Use a unique password for every account
  • Never reuse passwords across different services
  • Use a password manager to store your passwords securely
  • Enable two-factor authentication (2FA) wherever possible
  • Change passwords immediately if a service reports a data breach