Free tools / Bitcoin

BIP39 wallet recovery checker

Validate a mnemonic checksum and derive account xpub, fingerprint, receive addresses, and optional change addresses locally.

Use offline for real wallets. A mnemonic and passphrase control the funds. This page never returns seed hex or private keys, but a dedicated offline computer or hardware wallet remains safer.

BIP39 mnemonic Optional BIP39 passphrase An incorrect passphrase still derives a valid but different wallet.

Network Address standard Account Start index Addresses per branch

Include the internal change branch I understand that exposing a mnemonic or passphrase exposes the wallet.

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BIP39 wallet recovery checker

Watch-only recovery information

Derived addresses