What Makes a Password Strong
Password strength comes from length, randomness, and character variety. A longer password with a mix of uppercase letters, lowercase letters, numbers, and symbols is exponentially harder to crack than a short one. A 12-character random password has over 475 sextillion possible combinations using the full character set. By comparison, a common dictionary word of six letters has fewer than a million. Using truly random generation, rather than memorisable patterns, is the most effective defence against brute-force attacks.
How This Generator Creates Secure Passwords
All passwords are generated using the Web Crypto API, the same cryptographically secure random number generator built into modern browsers for security-sensitive applications. Unlike Math.random(), which is predictable and unsuitable for security purposes, the Web Crypto API draws entropy from the operating system's secure random source. No passwords are sent to any server, stored, or logged. The generation happens entirely in memory and the result exists only on your screen until you copy it.
How Long Should Your Password Be
Security experts recommend a minimum of 12 characters for most accounts, 16 characters or more for sensitive accounts such as email, banking, and password managers. For accounts that protect large amounts of money or sensitive personal data, use a minimum of 20 characters. Longer passwords are always stronger, and there is no practical reason to use a shorter password when a generator creates them instantly. Many services now enforce minimum lengths and complexity requirements.
Managing Multiple Passwords Securely
Strong unique passwords for every account are the foundation of good security, but remembering dozens of complex random strings is impossible without help. A password manager stores all your passwords securely, encrypted behind a single master password. Popular options include Bitwarden (open source and free), 1Password, and Dashlane. Use this generator to create strong passwords, then store them in your password manager. Never reuse the same password across different services.