/ privatekey-hex
PrivateKey - HEX
Validates a secp256k1 private key in HEX format.
Validates that a 32-byte value is a legitimate secp256k1 private key — the same curve Bitcoin, Ethereum, and most other major cryptocurrencies use.
What it does
- •Checks that the value is exactly 32 bytes (64 hex characters).
- •Confirms it falls strictly between 1 and the curve order n, as required by secp256k1.
- •Runs entirely in your browser — the key is never sent anywhere.
Use cases
- •Sanity-check a key before importing it into a wallet.
- •Verify a key generated by another tool or script is actually valid.
- •Learn what makes a private key 'valid' on secp256k1.
This tool runs entirely in your browser. Nothing you enter is sent to or stored on any server.