Free · Private · Client-side
Master Password Generator
Generate an ultra-secure master password for your password manager. This is the most important password you'll ever create - make it strong.
Generated values never leave this device.Estimated entropy: 47 bits · 768-word pool~1 minutes to crack at 1 trillion guesses/sec
Weak · <50 bitsFairGood · 70+Strong · 100+
In plain terms: a single gaming PC guessing a million passwords per second would crack this in about 2 years. Don’t use it for anything that matters.
Generated passwords
Weak47 bits
Weak47 bits
Weak47 bits
Weak47 bits
Master password security is critical
- Memorize it - Don't write it down anywhere digitally
- Never reuse - Use it only for your password manager
- Enable 2FA - Add another layer of protection
- Write it down securely - Store a physical backup in a safe place (safety deposit box)
- Test your memory - Practice typing it before relying on it
Why passphrases are recommended
A 5-word passphrase like correct-horse-battery-staple is easier to remember than a random string but can have comparable entropy. The key is using truly random words, not a phrase you make up.