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BIP39 Test Mnemonic

Generate a BIP39 English mnemonic for disposable tests or check a phrase's checksum locally.

Input

Input stays in this browser. Nothing is uploaded or stored.

Result

Run the tool to see its result here.

How to use this tool

Leave input empty to generate 12 words; enter a disposable phrase to check its checksum.

When not to use it

Never use a web-generated or pasted phrase to protect real assets. Use a trusted hardware wallet offline.