Generate cryptographic FIPS 202 SHA-3 and Keccak hashes locally in your browser.
Execution runs 100% locally inside the browser sandbox using HTML5 Canvas, Web Cryptography Subtle API, and Web Workers. Zero egress.
Zero network latency. Operates completely offline with zero dependencies on third-party backend servers or cloud services.
Built according to official RFC specifications, cryptographic test vectors, and enterprise-grade data transformation standards.
Select SHA3-256 or SHA3-512.
Type or paste the input string to hash.
Click to copy the calculated hexadecimal SHA-3 digest.
SHA-3 uses the sponge construction based on Keccak permutation, providing distinct mathematical security from SHA-2's Merkle-Damgård structure.
Yes, it conforms to the official NIST FIPS 202 SHA-3 specification with 0x06 domain padding.
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