Dapp storeArbitrumWeb3 developer toolsEVM tools
ETH Calldata Decoder
ETH Calldata Decoder
EVM tools

ETH Calldata Decoder

UI to easily decode Ethereum calldata with contract address, custom ABI or no ABI.

Arbitrum logo
Avalanche logo
BNB Chain logo
Ethereum logo
OP Mainnet logo
Polygon logo
Free, Open-source
This link will take you to a third-party site not owned or operated by Alchemy.

What is ETH Calldata Decoder?

While debugging smart contracts it can be tricky to quickly decode transaction calldata into a human read-able form. This tool can decode calldata by automatically fetching the ABI or guessing the function even if the contract is not verified.

Stream any onchain event for ETH Calldata Decoder with Custom Webhooks
Get your API key

Best EVM tools

Discover more web3 applications and developer tools.

See all dapps

Developer resources from Alchemy

App store listings are independently reviewed and written by Alchemy using a combination of inbound submissions, editorial research, public project sources, and third-party directories, including ecosystem data from The Grid under the Open Database License, DefiLlama, DappRadar, Reown, and chain ecosystem pages.

Dapp store background image

Build blockchain magic

Alchemy combines the most powerful web3 developer products and tools with resources, community and legendary support.
Get your API key