Keccak-256 (SHA3) Generator

Generate Keccak-256 hashes for Ethereum development—strings, hex payloads, and selector debugging.

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How to use

  1. Open the tool above.
  2. Follow the on-screen steps.
  3. Copy or export your results.

Features

  • Hash UTF-8 strings or hex bytes.
  • Essential when debugging event topics and signatures.

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FAQ

Is Keccak-256 the same as SHA3?

Ethereum uses Keccak-256 (original Keccak); NIST SHA3 is slightly different—use the Ethereum variant for selectors.

What is this used for?

Function selectors, topic hashes, and integrity checks in Solidity pipelines.

Is hashing done locally?

Yes. Hashing runs in your browser.