Password generator

In browser

Generate passwords or passphrases in your browser and see their real entropy

Input

Style

How many

Length

Characters, for the password style.

Words

Words, for the passphrase style. Each word from the 256-word list adds 8 bits.

Uppercase A-Z

Lowercase a-z

Digits 0-9

Symbols

Exclude look-alike characters

Removes I, l, 1, O and 0 — worth it when someone will read the password aloud or type it from a screen.

This tool runs entirely in your browser. Nothing you type is sent to the server, so it is safe for tokens, keys and passwords — and it keeps working with the network unplugged.

Fill in the form and run the tool. Results appear here.

Entropy is calculated from the generator's own choices — the size of the alphabet and the length — which is the honest measure for a random secret. It says nothing about a password a human invented, where the predictability of the pattern matters far more than the character count.