Diceware Passphrase Generator

What is a Diceware-style passphrase?

Diceware is a method of building passwords from randomly chosen dictionary words instead of random characters — originally by literally rolling physical dice to pick words from a numbered list. The idea, popularized by the Electronic Frontier Foundation, is that a passphrase made of several random common words is both easier for a human to remember and type, and can carry as much or more entropy than a shorter string of random characters, as long as enough words are used.

How to use it

1. Choose how many words you want (more words means more entropy).
2. Pick a separator and whether to capitalize words or append a random number.
3. Click Generate Passphrase and copy the result.

This tool draws from a curated list of 210 common, easy-to-type English words — not the full 7,776-word official EFF Diceware list — so treat the entropy figure shown as this tool's own honest estimate (word count × log₂ of the wordlist size), not a claim of matching the official Diceware standard exactly. Every word is chosen using your browser's cryptographically secure random number generator (crypto.getRandomValues), the same source used for the Password Generator on this site. As always, nothing is transmitted anywhere — generation happens entirely on your device.