# Passphrase Generator (BIP39 Words)

URL: https://phishdestroy.io/developer-tools/passphrase-generator
Category: Personal security
Where it runs: Runs locally (nothing you enter is uploaded)

Generate diceware-style passphrases from the 2048-word BIP39 English wordlist. Each word adds 11 bits of entropy, so the default six words give 66 bits.

## Example input

Default settings

```
6 words, space separator, 5 passphrases, no capitals
```

Gives five passphrases of six random words each, 66 bits per passphrase; choose 8 words for 88 bits.

## FAQ

### How strong is a passphrase from this page?

Words are picked with crypto.getRandomValues from 2048 words, so each adds exactly 11 bits: 4 words give 44 bits, 6 give 66 and 8 give 88. Capitalising the first letter or changing the separator adds almost nothing, because an attacker can try those variants.

### Is this a crypto wallet seed phrase?

No. The words come from the BIP39 list, but there is no checksum and the result is not a valid wallet mnemonic, so use it only as a password. Never type a real seed phrase into any website, including this one.

### Are the passphrases sent anywhere?

No. The wordlist is part of this page and the passphrases are generated in your browser; nothing is uploaded or stored.

## Related tools

- [Password Generator](https://phishdestroy.io/developer-tools/password-generator)
- [Pwned Password Check](https://phishdestroy.io/developer-tools/pwned-password-check)
- [BIP39 Decoy Seed Phrase Generator](https://phishdestroy.io/developer-tools/bip39-decoy-generator)
- [AES-GCM Encrypt / Decrypt](https://phishdestroy.io/developer-tools/aes-gcm-encryption)
- [API Key & Token Generator](https://phishdestroy.io/developer-tools/api-token-generator)

All tools: https://phishdestroy.io/developer-tools