About Memorable Diceware Passphrase Generator
Generate high-entropy, memorable multi-word passphrases based on the Electronic Frontier Foundation (EFF) curated wordlist. Much easier for humans to type and remember while providing extraordinary resistance to dictionary attacks.
Key Capabilities & Features
- Curated EFF long wordlist of human-friendly, easy-to-spell English words
- Configurable word count from 3 to 10 words
- Custom separators: hyphens, underscores, spaces, periods, or numbers
- Optional TitleCase capitalization for added entropy
- Shannon entropy calculation showing total cryptographic bits
How to Use Memorable Diceware Passphrase Generator
Select Word Count
Choose between 4 and 7 words (5+ words provides over 64 bits of entropy).
Choose Format
Select your separator character and optional capitalization.
Copy Passphrase
Click copy to use your memorable master passphrase.
Privacy & In-Browser Execution Guarantee
Diceware selection is computed locally using client-side cryptographic dice rolls. Zero network requests.
Frequently Asked Questions
Why are multi-word passphrases better than short passwords with symbols?
Passphrases leverage word length to achieve massive entropy while remaining pronounceable and memorable to human memory, preventing the need to write them down on sticky notes.
How many words should my passphrase have for secure protection?
A 5-word Diceware passphrase provides approximately 65 bits of entropy, which is sufficient to resist high-speed offline cracking. 6 to 7 words provide over 80 bits of military-grade security.
Are Diceware passphrases compliant with NIST guidelines?
Yes. NIST Special Publication 800-63B explicitly recommends long, multi-word passphrases over complex, short passwords with arbitrary special symbol requirements.