Passwords are generated entirely in your browser using the Web Crypto API. Nothing is sent to any server.
Weak passwords are the number one cause of data breaches. Studies consistently show that the most commonly used passwords — "123456", "password", "qwerty" — can be cracked in milliseconds by automated tools. A strong password generator creates truly random strings that are resistant to brute-force attacks, dictionary attacks, and credential stuffing. By using a cryptographically secure random number generator (CSPRNG) instead of human memory, you eliminate the predictable patterns that attackers exploit.
Password strength is measured in bits of entropy — the mathematical measure of randomness. Entropy is calculated as length × log2(charset_size). A 12-character password using only lowercase letters has about 56 bits of entropy, while the same length using uppercase, lowercase, digits, and symbols has about 79 bits. Security experts recommend at least 80 bits of entropy for important accounts. Our tool displays the estimated entropy in real time so you can make informed decisions about your password security. A password with 128+ bits of entropy is considered practically unbreakable with current technology.
This password generator runs entirely in your browser using the Web Crypto API (crypto.getRandomValues()), the same cryptographic primitive used by browsers for TLS connections. No passwords are ever transmitted over the network or stored on any server. This means even we cannot see the passwords you generate. For maximum security, combine a strong generated password with a password manager and enable two-factor authentication (2FA) on all important accounts.