Security & Crypto Tools
Passphrase Generator (Diceware)
Generate memorable diceware passphrases from a 7776-word list.
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What is Passphrase?
A diceware passphrase generator: each word is chosen with crypto-safe randomness from a fixed 7776-word list, yielding ~13 bits of entropy per word.
How it works
Word count is clamped to 1–20; each word is picked via crypto.getRandomValues and joined with your chosen separator.
- Enter your input. Type or paste your input into the field above — the tool responds instantly.
- Review the result. Output updates live as you type. Everything runs entirely in your browser.
- Copy or download. Use the Copy button to grab the result, or Download to save it as a file.
Examples
Diceware passphrases
Generate a 6-word diceware passphrase — long, memorable, and high-entropy for master passwords.
Common mistakes
Choosing your own words
Hand-picked words are predictable. The generator draws from a fixed word list with genuine randomness.
Frequently asked questions
How much entropy does a passphrase have?
Each word from a 7,776-word list adds about 12.9 bits, so six words total roughly 77 bits — the tool shows the exact figure.
What word list is used?
The EFF large word list, which avoids similar-looking words and is designed for diceware use.