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Password & Passphrase Generator

A generation instrument, not a web form: every credential is produced with crypto.getRandomValues() — never Math.random() — entirely inside this tab. Nothing you generate here is transmitted, logged, or stored unless you explicitly turn that on below.

Generated locally — never sent to a server
—0.0 bits

Quick settings

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Digits & symbols
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"Replace" swaps random letters for digits/symbols — it doesn't lengthen the passphrase, and if your symbol pool is small it can very slightly lower entropy per swap. The estimate below always reflects this exactly.

Word source

Word list: 2,048-word BIP-39 English list. This is the same public word list used by many crypto wallets to encode seeds — using it here does not make this a wallet seed generator; it's just a well-vetted, unique-prefix English word list.

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Why this estimate

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