Function Selector

Calculate EVM function selectors from Solidity function signatures.

Result
Signature
Selector (4 bytes)
0x________

Generate EVM function selectors (4-byte identifiers) from Solidity function signatures. The selector is the first 4 bytes of the keccak256 hash of the canonical function signature.

How to use: Use the Signature tab to enter a full signature string, or the Builder tab to construct one from function name and parameter types.