Password Generator
Create random secure passwords or memorable keyword-based passphrases.
Secure Output
Estimated Crack Time
Estimates assume a standard brute-force search over the full search space of your character selections. Real-world dictionaries and common patterns crack much faster.
Frequently Asked Questions
How is password entropy calculated?
Password entropy measures unpredictability in bits (log2(charset_size^length)). Higher bit strength means an attacker must test exponentially more combinations during brute force attempts.
Why choose a Diceware passphrase over random characters?
Diceware passphrases combine multiple dictionary words into a phrase that humans can easily remember while providing high mathematical entropy against automated cracking.
Are generated passwords saved anywhere?
No. Passwords and passphrases are generated in your local browser runtime using cryptographically secure pseudorandom values. They are never transmitted or saved.