Passphrase Generator — Secure Multi-Word Passphrases
Generate strong, easy-to-type multi-word passphrases. Perfect for password managers, master passwords, and accounts you log into frequently.
A passphrase is one of the best-kept secrets in password security. Instead of relying on a short, complex jumble of characters, a passphrase uses a longer sequence of random words. The extra length makes it far more resistant to brute-force attacks, while the word structure makes it easier for humans to remember and type accurately.
Security researchers have long recommended passphrases for high-value accounts. The famous XKCD comic "Password Strength" illustrated how a four-word passphrase like correct horse battery staple can be both easier to remember and harder to crack than a shorter, symbol-heavy password. While that exact phrase should never be reused, the principle remains sound: random words plus length beat complexity alone.
Our standard password generator creates cryptographically secure random character strings. To turn its output into a passphrase-style credential, generate several short fragments and insert them between unrelated words. Alternatively, use the tool to generate a 16–20 character base and mentally split it into chunks separated by memorable symbols. The result is a hybrid passphrase that resists dictionary attacks while staying typable.
Why passphrases work
Every character in a password adds entropy, but every word in a passphrase adds far more. A five-word passphrase drawn from a list of 7,000 common words has roughly 64 bits of entropy. A six-word passphrase pushes that above 76 bits. To reach the same security with random characters, you would need a string that is extremely difficult to memorize.
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Options
Store your passphrases securely
A password manager lets you use unique passphrases everywhere without memorizing them all.
Passphrase best practices
- Use at least five or six unrelated words.
- Separate words with symbols or numbers, not just spaces.
- Avoid famous quotes, lyrics, or idioms.
- Use a passphrase as a master password for your password manager.
- Never reuse a passphrase across multiple accounts.
Frequently asked questions
What is a passphrase?
A passphrase is a sequence of words used as a password. Because it is longer than a typical password, it can be more secure while remaining easier to remember and type.
How many words should a passphrase have?
A secure passphrase should have at least five or six randomly chosen words. Each additional word exponentially increases the difficulty of guessing it.
Should I use spaces in my passphrase?
Spaces are fine if the website accepts them, but many sites do not. You can use dashes, underscores, or symbols instead to separate words.