Password Generator
Random passwords or memorable passphrases, generated with your browser's cryptographic random number generator. Never sent anywhere, regenerates live as you tune the options.
How the strength meter works
Based on real entropy, not a guess.
Entropy is calculated from the actual pool size and length: character passwords use
length × log2(pool size), passphrases use words × log2(word list size).
Under 40 bits is crackable quickly offline; 60+ bits is solid for most accounts; 90+ is
overkill in a good way.
Why passphrases
A random string like xK9#mQ2p is hard to remember but not necessarily
stronger than coral-lantern-otter-42, and the second one you can actually
type without looking. The word list here has ~390 words, so more words closes the
entropy gap with true random characters.