Random Passphrase Generator

A passphrase generator creates passwords from random words instead of random characters. You choose the word count (typically 4–6), a separator (hyphen, space, dot), and optional extras like capitalization, a number, or a symbol. The result is easier to remember than a random string like 'xK9#mP2!' while offering comparable or better security when the word list is large enough.

This generator uses a list of ~500 common English words (4–8 letters, easy to type). Each word is chosen with cryptographically secure randomness. Entropy is calculated as word_count × log2(wordlist_size), so you can see exactly how strong your passphrase is.

Traditional passwords use random characters; passphrases use random words. A 4-word passphrase from 512 words has ~36 bits of entropy. A 12-character password from 95 characters has ~79 bits — stronger, but harder to remember. For most accounts, a 5–6 word passphrase with a number or symbol is a good balance: memorable, typeable, and resistant to brute force. For high-security (password manager master, encryption keys), use 6+ words or a long random password from a password manager.

Use at least 4 words; 5–6 for important accounts. Add a number or symbol to increase entropy. Choose a separator you can type quickly (hyphen is common). Don't modify the words — 'correct' is fine, don't substitute 'c0rrect'. Use a unique passphrase for each account. Consider a password manager for most accounts and reserve passphrases for things you must memorize (e.g., master password).