Password Phrase Generator
Generate secure, memorable passphrases using diceware-style random word selection. Uses cryptographically secure randomness for real security.
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About Password Phrase Generator
This tool generates secure passphrases using the diceware method. Instead of random characters, it combines random common English words to create passwords that are both strong and easy to remember.
Why Use Passphrases?
- Easy to remember: "correct-horse-battery-staple" is easier to remember than "Tr0ub4dor&3"
- Hard to crack: Each additional word multiplies the difficulty exponentially
- Cryptographically secure: Uses browser's crypto.getRandomValues() for true randomness
- Widely recommended: Endorsed by security experts including the EFF and NIST
Understanding Entropy
Entropy measures password strength in bits. With a 1000-word list, each word adds about 10 bits of entropy (log2(1000) ~ 10). A 4-word passphrase provides ~40 bits, and 6 words provide ~60 bits of entropy.
Frequently Asked Questions
What is a diceware passphrase?
A diceware passphrase is a password created by randomly selecting words from a word list, typically using dice rolls. This method produces passwords that are both strong and easy to remember.
How secure is a passphrase?
A 4-word passphrase from a 1000-word list has about 40 bits of entropy, while a 6-word passphrase has about 60 bits. The more words used, the stronger the passphrase.
Is this generator truly random?
Yes, we use the browser's crypto.getRandomValues() API which provides cryptographically secure random numbers, making the passphrases suitable for real-world security use.
Is my text data stored or shared?
No. All text processing happens entirely in your browser. Your text is never sent to any server, never stored anywhere, and never leaves your device. This makes it safe for sensitive documents and personal content.
Last updated: June 2026