SHA-3 / Keccak Cryptographic Hash Generator
Compute official FIPS 202 SHA-3 and Keccak sponge cryptographic hashes for blockchain, Ethereum, and modern security.
About This Tool
SHA-3 (Secure Hash Algorithm 3) is the latest cryptographic hash standard released by NIST based on the Keccak sponge function. It provides a fundamentally different mathematical structure from SHA-2.
Key Features
Supports SHA3-256, SHA3-512, SHA3-384, SHA3-224
FIPS 202 compliant Keccak implementation
Uppercase / lowercase hexadecimal output
One-click copy
How to Use
- 1Paste your text string into the input area.
- 2Select your SHA-3 variant: SHA3-256, SHA3-512, SHA3-384, or SHA3-224.
- 3Click 'Generate SHA-3 Hash' to view the output.
Why Use ToolSnippet SHA-3 (Keccak) Hash Generator?
Immune to length-extension attacks that affect older hash algorithms.
Widely used across Web3, Ethereum, and next-generation security standards.
Pure client-side implementation with zero server transmission.
Tips for Best Results
- Use SHA3-256 for modern cryptographic projects requiring non-SHA-2 diversity
Frequently Asked Questions
How does SHA-3 differ from SHA-2?
While SHA-2 uses the Merkle–Damgård construction, SHA-3 uses the innovative Keccak sponge construction, making it completely immune to length extension attacks.
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