Password Generator
Generate strong, cryptographically random passwords
Options
Why do I need a strong password?
A weak password can be cracked in seconds with modern hardware. Attackers use GPU clusters that test billions of combinations per second. An 8-character password using only letters and digits has around 2.8 trillion possible combinations - which can be cracked in just a few seconds.
What does "entropy" mean?
Entropy is measured in bits and indicates how complex your password is. It's calculated as length × log₂(charset_size). Over 80 bits is considered strong by today's standards. Over 100 bits is practically uncrackable even by next-generation quantum computers.
Bcrypt vs MD5: what's the difference?
MD5 and SHA-256 were designed for speed - that's why a GPU can test billions per second. Bcrypt was intentionally designed to be slow, making brute-force attacks 100,000× harder. That's why secure applications store passwords with bcrypt, Argon2 or scrypt - never MD5.
Explore all tools
