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ABI Encoder

Encode function calls into calldata.

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ABI Encoder

ABI encoder

TypesValues (comma-separated)

About this tool

Turns Solidity types and values into ABI-encoded hex. Use for constructor args, low-level calls, and checking what Etherscan verification expects.

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

Verification

Etherscan constructor args are ABI-encoded without a leading 0x in some UIs — match what the explorer asks for.

Related

Decode raw ABI-encoded values into typed output.

Decode logs by topic and event signature.

Calldata Decoder

Break down transaction input data into function and args.

Deploy OpenZeppelin contracts, mint NFTs, encode calldata, snapshot holders, claim testnet faucets, and learn the stack — one non-custodial studio from classroom to mainnet.

Built by Ibrahim Wali

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