Passphrase Generator

Create a strong, memorable passphrase instantly. Free, private, and nothing is stored.

Your passphraseGenerated securely on this device

Generating…

Estimated passphrase strengthFair

Estimated entropy: 58 bits.

These labels estimate the generated value's entropy, not the overall security of an account. Uniqueness, secure storage, and MFA also matter.

Number of wordsSeparatorCapitalizationInclude a two-digit number

Generated locally in your browser. Your passphrase never leaves your device.

Generated on your device
Nothing stored
Instant
No signup

What is a passphrase?

A passphrase is a password built from several randomly chosen words instead of a short string of characters. Because every added word multiplies the number of possible combinations, a passphrase can reach very high strength while staying readable, memorable and easy to type — something a string like xQ7!vR2#kL never is.

Why random words beat clever words

A passphrase only works if the words are chosen at random. Phrases you invent — song lyrics, quotes, names, or word combinations that "feel" random — follow patterns attackers know and try first. This generator picks each word independently from a large word list using crypto.getRandomValues(), the operating system's cryptographically secure random source, so no word is predictable from the others.

How many words do you need?

4 words — reasonable for low-stakes accounts, but on the short side for anything important.
5 words — a strong baseline and this generator's default.
6+ words — a good choice for a password manager's master password or other credentials you must memorize.
Service limits — some services cap password length or reject spaces. Adjust the separator and word count to fit, and prefer more words over extra symbols.

Passphrase or random password?

Use a passphrase for the few credentials you genuinely need to remember and type: your password manager's master password, device logins, and full-disk encryption. For everything else, a password manager can store a long random password, so memorability stops mattering. Our Free Password Generator creates both, and the Password Strength Checker can estimate the strength of a password you already use.

Why browser-side generation is more private

A generator that builds passphrases on a server has to transmit them back to you, which means they can appear in server logs, proxy caches, error reports or analytics payloads. Generating in the browser removes that entire class of exposure: the passphrase exists only in the memory of your own tab until you copy it. You can verify this yourself — open your browser's network tab and generate a passphrase; no request is made.

Frequently asked questions

What is a passphrase?: A passphrase is a password made of several random words, such as river-apple-cloud-lantern-42. Because it is much longer than a typical password, it can be very strong while still being possible to remember and type.
How many words should a passphrase have?: Five words is a strong baseline for most accounts, and six or more is a good choice for important credentials like a password manager's master password. Each added word increases the estimated entropy significantly.
Are passphrases as secure as random passwords?: A randomly generated passphrase of enough words can match or exceed the entropy of a shorter random character password, and it is far easier to remember. For accounts where you never type the password yourself, a long random character password from a password manager is equally good.
Are the passphrases stored or sent anywhere?: No. Passphrases are created by your browser using the built-in Web Crypto API and are never sent to our servers, logged or saved by this page. If you copy one, it may remain in your device's clipboard or clipboard history.
Should I add numbers or capitalization to a passphrase?: They add a small amount of entropy and can help meet services that require a number or an uppercase letter, but the main strength of a passphrase comes from its length. Adding another word helps more than adding symbols.
When should I use a passphrase instead of a password?: Use a passphrase for anything you need to memorize and type regularly, such as a master password or a device login. For everything else, let a password manager store a long random password so you never have to remember it.