Random passwords from letters, digits and symbols via crypto.getRandomValues.
Passphrase Generator (BIP39 Words)
Runs locally
Use Passphrase Generator (BIP39 Words)
What it does
Generate diceware-style passphrases from the 2048-word BIP39 English wordlist. Each word adds 11 bits of entropy, so the default six words give 66 bits.
It runs entirely in your browser: nothing you enter is uploaded.
Example
Default settings
6 words, space separator, 5 passphrases, no capitalsFive passphrases of six lowercase words joined by spaces, such as word word word word word word.
Real ones are generated in your browser from the word list with crypto.getRandomValues; none is printed on this page, because a published passphrase is not secret.Gives five passphrases of six random words each, 66 bits per passphrase; choose 8 words for 88 bits.
FAQ
How strong is a passphrase from this page?
Words are picked with crypto.getRandomValues from 2048 words, so each adds exactly 11 bits: 4 words give 44 bits, 6 give 66 and 8 give 88. Capitalising the first letter or changing the separator adds almost nothing, because an attacker can try those variants.
Is this a crypto wallet seed phrase?
No. The words come from the BIP39 list, but there is no checksum and the result is not a valid wallet mnemonic, so use it only as a password. Never type a real seed phrase into any website, including this one.
Are the passphrases sent anywhere?
No. The wordlist is part of this page and the passphrases are generated in your browser; nothing is uploaded or stored.