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What is an ABI Encoder/Decoder?

Application Binary Interface (ABI) encoding is how Smart Contracts on Ethereum and other EVM chains expect to receive and transmit data over the network.

EVM execution occurs natively in hexadecimal bytearrays. When you call a `transfer(address,uint256)` function, the string and address are encoded into a strict 32-byte padded struct specified by the ABI standard.

This tool uses Ethers.js to accurately encode your human-readable inputs into protocol-ready hex data, and vice-versa, making debugging low-level transactions much easier.

1How to Use

  • 1. Select Encode or Decode mode.
  • 2. Provide the exact Solidity Types in comma-separated order (e.g., `uint256, address`).
  • 3. Provide the corresponding values (or the raw hex string if decoding).
  • 4. Process and view the result.