About the Password Generator

A strong password is your first line of defense against unauthorized access to your accounts. This password generator creates truly random passwords using the Web Crypto API (crypto.getRandomValues), the same cryptographic randomness used by security professionals. Unlike Math.random(), this method provides unpredictable, cryptographically secure random numbers that cannot be guessed or reproduced.

Password strength is measured in entropy, which represents the number of possible combinations an attacker would need to try. Entropy is calculated as the password length multiplied by log2 of the character set size. A 16-character password using all character types (uppercase, lowercase, numbers, symbols) has approximately 105 bits of entropy, which would take billions of years to crack even with modern hardware.

The estimated crack time shown below assumes an attacker with a powerful GPU cluster capable of 10 billion guesses per second. This is a realistic estimate for offline attacks against hashed passwords. For online attacks with rate limiting, the actual crack time would be astronomically longer. Always use a unique password for each account and consider using a password manager to store them securely.