What is the difference between SHA-3 and Keccak?

SHA-3 is the NIST-standardized version with a different padding from the original Keccak. Keccak-256 uses the original padding and is common in Ethereum.

Is my data uploaded anywhere?

No. All hashing happens locally in your browser.

SHA-3 / Keccak Hash

Compute SHA-3 (224/256/384/512) and Keccak-256 hashes. Free, private, and 100% client-side.

param.variantparam.outputFormat

Input

Output

Local only

Recent history

No history yet

How to use

Type or paste text into the input box.
Select the SHA-3 variant or Keccak-256.
Choose hex or Base64 output format.
Copy the computed digest.

Frequently asked questions

What is the difference between SHA-3 and Keccak?: SHA-3 is the NIST-standardized version with a different padding from the original Keccak. Keccak-256 uses the original padding and is common in Ethereum.
Is my data uploaded anywhere?: No. All hashing happens locally in your browser.

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