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Calldata Decoder

Break down transaction input data into function selector and args.

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Calldata Decoder

Calldata decoder

Function signatureCalldata (hex, includes selector)

About this tool

Given a function signature and full calldata (selector + args), decode what a transaction was trying to call. Pair with Etherscan Input Data when the UI decode fails.

All computation happens locally in your browser. No inputs are sent to a server.

Related

Encode Solidity function calls into ABI calldata for constructors and low-level calls.

Decode raw ABI-encoded hex into typed Solidity values and JSON.

Decode Ethereum event logs by topic0 and event signature.

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