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Passphrase Generator
Build memorable Diceware style passphrases from a built in word list, with an entropy estimate.
Generate a passphrase
Word pool: — · Entropy: — ·
Strength: —
How to use the Passphrase Generator
- Choose how many words the passphrase should contain.
- Pick a separator, a capitalisation style and any extra characters.
- Click Generate, check the entropy figure, then copy the passphrase.
Features
- Over four hundred short words built in
- Three to twelve words with four separator choices
- Optional random number and symbol
- Live entropy estimate and strength label
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Frequently Asked Questions
Common questions about the free online passphrase generator.
Choose the number of words, a separator and a capitalisation style, then click Generate to
get a fresh passphrase.
It is a password made from several randomly chosen words, which is far easier to remember
than a short jumble of characters.
Each extra word multiplies the number of possibilities by the whole word list size, so it
adds about nine bits here.
Aim for at least seventy bits for important accounts. This tool prints the exact estimate for
every passphrase it makes.
No. It is applied by a fixed rule, so the estimate counts only the words, the number and the
symbol.
Yes. Each word is drawn from the built in list with rejection sampling from the browser
secure random generator.
No. It is built inside your browser and is never stored, logged or transmitted.
No. Generate a fresh one for every account and keep them in a password manager.
Yes. The generator is completely free with no account and no usage limits.
Last updated: October 10, 2026