Diceware Passphrase Generator
Strong, memorable passphrases built from the official EFF 7,776-word Diceware list using cryptographic randomness. Nothing is sent, logged, or stored — anywhere.
About Diceware passphrases
Diceware is a method invented by Arnold Reinhold in 1995: roll five dice to pick a word from a fixed 7,776-word list, repeat for each word in your passphrase. The result is a passphrase that's both high-entropy and easy to remember, unlike a random jumble of characters. This tool uses the official EFF large wordlist (the same 7,776-word list published by the Electronic Frontier Foundation) and picks each word with crypto.getRandomValues — the browser's cryptographically secure random source — instead of rolling physical dice.
Each word from this list carries about 12.9 bits of entropy (log₂ 7776), so a 6-word passphrase has roughly 77 bits — comparable to a 12-character fully-random password, but far easier to type and memorize. The passphrase is generated entirely on your device and never transmitted, saved, or logged anywhere. For anything you truly need to remember, 5–6 words is a solid baseline; for high-value secrets, use 7 or more.