Free strong password generator — nothing leaves your device
Cryptographically secure random passwords or memorable passphrases. Live strength meter shows bits of entropy + rough crack time.
Uses browser crypto.getRandomValues — the same primitive Node.js and OpenSSL use. Nothing sent, nothing stored, no history.
Frequently asked
Is this random truly random?
Yes — uses crypto.getRandomValues, a CSPRNG (cryptographically secure pseudorandom number generator). Same source used by TLS, password managers, and OpenSSL.
What is a passphrase?
Multiple random words joined together (e.g. correct-horse-battery-staple). Easier to remember than a random-char password, still strong if you use 4+ words from a large wordlist.
How is entropy calculated?
log₂(N^L) where N = character set size, L = length. Passphrase entropy = log₂(wordlist size) × word count.
Are generated passwords stored?
No. Not in localStorage, not in any log. Refresh the page and it's gone.
Free forever?
Yes.