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How to use SHA-3 / Keccak Hash

Paste your text and choose a variant to compute its SHA-3 or Keccak-256 digest instantly, shown as a hex string to copy.

Frequently asked questions

How is SHA-3 different from SHA-2?

SHA-3 uses the sponge-based Keccak construction rather than the Merkle–Damgård design of SHA-2, giving it a different security profile.

What is Keccak-256 used for?

Ethereum uses Keccak-256 for addresses, function selectors and state hashing. Note it differs slightly from the final SHA3-256 standard.

Are SHA-3 hashes reversible?

No — like all cryptographic hashes they are one-way and cannot be reversed to the original input.

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