Diceware Passphrase Generator
A passphrase generator that picks words at random from a 2048-word list using crypto-secure dice rolls. Six words give about 66 bits of entropy and are far easier to memorize than a 12-character random password. Configure word count, separators, capitalization, and optionally append a number or symbol.
How to use
Six words is the modern minimum (~66 bits). Use seven or eight words for password-manager master phrases.
A separator visibly delineates words and adds tiny bits of entropy without harming memorability. Dash is the most common choice.
Title Case helps with services that require mixed case. Append a number/symbol if a service blocks unmixed alphabetic passwords.
Click Generate until a phrase "sticks". Memorability matters more than the exact wording — the entropy is identical.
Create memorable passphrases that are easier to type than random strings — without losing entropy
Features
FAQ
What is diceware?
Diceware is a method of picking a passphrase by rolling physical dice and looking up each result in a pre-defined word list. It produces strong, memorable passwords whose entropy is exactly len × log2(wordlist size).
Why a passphrase instead of a random password?
Passphrases are easier to memorize, easier to type on phones, and easier to dictate over the phone. For the same entropy, a 6-word passphrase is roughly equivalent to a 12-character random password.
How many words is enough?
6 words ≈ 66 bits — out of reach for any current adversary. 7 words ≈ 77 bits for sensitive accounts. 8 words ≈ 88 bits for master keys and recovery phrases.
Is BIP-39 a good word list?
Yes. BIP-39 is the curated 2048-word list used by Bitcoin wallets for seed phrases — every word is short, distinct in the first 4 letters, and easy to spell.
Should I add a number or symbol?
Only if a service demands it. A 6-word passphrase already has more entropy than most password policies require. Adding "1!" at the end does not meaningfully improve security.
Are passphrases really memorable?
Yes — humans remember word sequences far better than character strings. After typing "river coffee window plant" ten times, it sticks. Stories or absurd images help.
We can — and it's free! Just send us a quick message with your idea. If you'd like to discuss it in detail, leave your email and we'll get back to you. You can stay anonymous.
