Passphrase Generator
Generate a strong, memorable passphrase using the EFF's real Diceware word list.
How to Generate a Passphrase
- Choose how many words you want (more words means more security).
- Pick a separator and whether to capitalize each word.
- Click "Generate New Passphrase" as many times as you like.
- Copy it and store it somewhere safe, like a password manager.
Frequently Asked Questions
What is Diceware, and why use a word list instead of random characters?
Diceware is a method (originally using physical dice) for generating passphrases by picking random words from a fixed list. A multi-word passphrase like "correct horse battery staple" can be both easier to remember and have more actual entropy than a shorter string of random characters, since each additional word multiplies the number of possible combinations.
Why does this use the EFF's specific word list instead of just any dictionary?
The Electronic Frontier Foundation's word list was deliberately designed for this purpose — it avoids offensive terms, avoids words that are hard to spell or easily confused with each other, and uses exactly 1,296 words (6 to the 4th power) so the security of each word can be precisely calculated.
How much entropy does a passphrase from this list actually have?
Each word chosen from the 1,296-word list contributes about 10.3 bits of entropy (log base 2 of 1,296). A 6-word passphrase has roughly 62 bits of entropy — comparable to or stronger than a fairly long random password, while being made of real, memorable words.
Is this passphrase ever sent to a server?
No — the word list is built into this page, and word selection uses your browser's cryptographically secure random number generator, so the entire process happens locally with nothing transmitted anywhere.