Diceware Passphrase Generator — Free Online Tool
Generate random word-based passphrases (inspired by the Diceware method). Choose 3–8 words, separator style, and options like capitalisation and appended numbers. Shows estimated entropy bits so you know how strong your passphrase is.
100% client-side. No uploads. Your data never leaves your browser.
How to use Diceware Passphrase Generator
- Choose word count (more words = more entropy).
- Pick a separator.
- Click Generate.
- Copy the passphrase.
Frequently Asked Questions
Why passphrases instead of passwords?
Random word passphrases can be both stronger and more memorable than complex character passwords. '4 words' gives ~44 bits of entropy.
Is this cryptographically secure?
Yes — uses crypto.getRandomValues() for all randomness.
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