Sécurité

Clé Privée vers Adresse

Dérivez des adresses Bitcoin (P2PKH) et Ethereum (EIP-55) à partir d'une clé privée secp256k1 de 32 octets — tous les calculs s'exécutent localement

Private Key → Address

Derive Bitcoin (P2PKH) and Ethereum (EIP-55) addresses from a 32-byte secp256k1 private key

Public Key

02fb3cd941d55a68a81da06bd030ce276a835dfb4759a406e8bded09798670e96e
04fb3cd941d55a68a81da06bd030ce276a835dfb4759a406e8bded09798670e96ee4d7cc2e48296fae546de6851afc3d57de9fd25620bb99a71dcccef1f055914a

Ethereum

0x8E3EC1B00857A1abD207dd8374Af0EF19F99284f

Bitcoin

1BDCWR1QT7MM18NmEKsHgwF4bsRFzarXaC
KxDoMQKtoLSmkjPArdPXAoegx7f23YnabQnKUmtnpynyudSQx1VS
5J3SueumMvLtNgxmpwv8k19YFkecaf1p2uWkcHy97nwpnU5PJ84

How it works

  • BTC and ETH both use the same secp256k1 curve, so a single 32-byte key derives addresses on both chains.
  • ETH address = last 20 bytes of keccak256(pubkey_xy), then EIP-55 checksum casing.
  • BTC P2PKH = base58check(0x00 || RIPEMD160(SHA256(pubkey))).
  • WIF (Wallet Import Format) is the base58check encoding of the private key for use in Bitcoin Core / Electrum.

Never paste a real private key controlling real funds into a website.

This tool computes everything locally with no network calls, but you cannot verify that with the naked eye. Use it only for testnet keys, learning, and burner wallets.

Powered by the audited @noble/curves and @noble/hashes libraries. Pure JavaScript, no WASM, no network.

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