SHA3-256 Hash Generator
Generate SHA3-256 hashes — the most commonly used SHA-3 variant — directly in your browser.
Last updated: May 30, 2026
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Buy me a coffeeWhat is SHA3-256 Hash Generator?
SHA3-256 is the most widely used member of the SHA-3 family, standardised in FIPS 202. It uses the Keccak[512] sponge with a 1088-bit rate and produces a 256-bit output.
SHA-3 was designed as an alternative to SHA-2 with a fundamentally different internal structure (the Keccak sponge). SHA3-256 and SHA-256 produce the same output length but are not interchangeable — they produce entirely different digests.
How to Use SHA3-256 Hash Generator
Type or paste the text you want to hash
Review the generated SHA3-256 output
Toggle uppercase if your target system expects capital hex
Copy the digest for comparison or storage
Common Use Cases
- Hashing data with a SHA-3 compliant algorithm.
- Verifying SHA3-256 output against reference implementations.
- Generating SHA3-256 fixtures for unit tests.
- Comparing SHA3-256 with SHA-256 for the same input.
Example Input and Output
Generate the FIPS 202 SHA3-256 digest for a short string.
abc3a985da74fe225b2045c172d6bd390bd855f086e3e9d525b46bfe24511431532How This Tool Works
The tool encodes input as UTF-8 bytes, applies Keccak-f[1600] with SHA3-256 rate and SHA3 multi-rate padding locally, and formats the 256-bit digest as hexadecimal.
Technical Stack
Variant
FIPS 202 SHA3-256 — Keccak[512], rate=1088 bits, capacity=512 bits.
Security note
SHA3-256 is fully secure and is the recommended SHA-3 variant for general use.