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

03c5423131d74c524447d7a1da943331ff0a89d8b6b8036765c1a905767afe5437
04c5423131d74c524447d7a1da943331ff0a89d8b6b8036765c1a905767afe543775bfd78b37c6df2c3548de2df22621d7e5493d5f42d984e7789e7f933fd4434f

Ethereum

0x101b805f24BBC6A4A8aBF87c47a72d0f7bE38BBB

Bitcoin

14TFV5knUk46rTrmEbQBmhUFuo5YaemLDp
Ky13et6wfpNx71vmQMm3zRUAWatoMER7ZCNvNwF8Sfrw8h6Udd8D
5JDhUcbRcyxGf4qS1m8GBHsZWp6r1xbv9Ce91tiGHEnkXmH3Lpx

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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