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Password & passphrase generator

Generate strong random passwords or diceware-style passphrases, in bulk, with a live entropy and crack-time estimate — right here in your browser.

Every feature. No limits. No sign-up. No watermark. Nothing uploaded. Free forever. It runs 100% in your browser — passwords are generated and stay on your own device, never sent to a server. Unlike online generators that quietly log what they hand you, there is nothing here to intercept, because nothing leaves your machine.

Crypto-grade randomness, not Math.random. Every character and every word comes from crypto.getRandomValues — the same CSPRNG used for real cryptography — sampled with rejection to avoid modulo bias. Nothing is logged, cached or transmitted; refresh the page and it's gone.

Length & character types

Length 16

Uppercase A-Z Lowercase a-z Digits 0-9 Symbols !@#$…

Exclude ambiguous (l 1 I O 0 o |) No repeated characters

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Strength: —0 bits of entropy

Bulk generate

Count

A free tool by Kaira Prime — an independent software studio. Built local-first, like everything we make. Every feature. No limits. No sign-up. No watermark. Nothing uploaded. Free forever. More free, in-browser tools: kairaprime.com/tools →