Question 1

What is a Diceware passphrase?

Accepted Answer

Diceware is a method of creating strong passphrases by rolling dice to randomly pick words from a fixed list. The official EFF word list has 7,776 words; each word contributes about 12.9 bits of entropy, so a 6-word passphrase has roughly 77 bits of entropy — strong enough to resist brute-force for centuries.

Question 2

How many words do I need for a secure passphrase?

Accepted Answer

For most personal accounts 4 words (~52 bits) is reasonable, 5 words (~64 bits) is good, and 6 words (~77 bits) is excellent. Critical accounts (master password, encryption key) should use 7+ words or add extra entropy with random digits and symbols.

Question 3

Are passphrases better than random passwords?

Accepted Answer

For human-memorized passwords, yes. A 4-word passphrase is much easier to remember than an 8-character random string of mixed case + digits + symbols, and provides more entropy. For machine-stored passwords (a password manager) any random string works equally well.

Question 4

Is this generator safe to use for real passwords?

Accepted Answer

Yes. The word list and all randomization happen in your browser. No data is uploaded, no network requests are made, and the page works fully offline once loaded. For maximum assurance, disconnect from the internet before generating your most critical passphrase.

Example passphrases