Private Key Format Converter

What is a Private Key?

A 256-bit random number that proves ownership of cryptocurrency. It's used to:

• Sign transactions
• Derive public keys and addresses
• Prove ownership of funds

Format Conversions:

Different formats encode the same 256-bit number differently:

• Hex: Direct representation, 64 characters
• WIF: Base58Check with checksum and network byte
• Base64: Binary-to-text encoding

Which Format to Use?

• Bitcoin Core: WIF format
• Ethereum: Hexadecimal (no 0x prefix)
• Paper Wallets: Usually WIF or QR code
• Hardware Wallets: Internal format (never exposed)
• APIs/SDKs: Usually hexadecimal

Relationship to Public Keys:

Private Key → (ECDSA) → Public Key → (Hash) → Address

Public keys and addresses are safe to share. Private keys must remain secret.