SHA3-224 is a SHA-3 family member (FIPS 202, 2015) producing 224-bit hashes via Keccak sponge. Unlike SHA-2 variants, it is structurally immune to length-extension attacks.

How is SHA3-224 different from SHA-224?

SHA-224 uses Merkle-Damgard (truncated SHA-256). SHA3-224 uses the Keccak sponge design. They produce different outputs for the same input and have different security properties.

Why was SHA-3 created?

NIST ran the SHA-3 competition (2007-2012) to develop a backup standard structurally different from SHA-2. If SHA-2 weaknesses are discovered, systems can switch to SHA-3.

What is the Keccak sponge?

Keccak absorbs input into a state array, then squeezes out the hash. Unlike Merkle-Damgard, the sponge model naturally resists length-extension attacks.

Should I use SHA3-224 or SHA-256?

For shorter hashes with modern security, SHA3-224 works. For widest compatibility, SHA-256 remains the standard. SHA-3 is recommended when avoiding SHA-2 monoculture.

Tools

SHA3-224|56 hex chars

Input

Output

Hash result will appear here...

0 chars|0 bytes

SHA3-224 Hash Generator — 224-bit Keccak Sponge Online

FIPS 202 standard based on Keccak sponge construction. 224-bit output, naturally immune to length-extension attacks. Structurally independent from SHA-2.

Features

✓Compute SHA3-224 hashes online — FIPS 202 Keccak sponge construction
✓Real-time 224-bit hash computation with 56 hex character output
✓One-click copy, download as .txt, and uppercase/lowercase toggle
✓Immune to length-extension attacks — a structural advantage over SHA-2
✓Hash verification against known SHA3-224 checksums
✓100% browser-based — all computation happens locally

How to Use

1Type or paste your text into the input box above.
2Your hash digest appears instantly — no page reload needed.
3Toggle UPPERCASE / lowercase to change the hex output format.
4Click the copy icon to copy the hash to clipboard, or use Download to save as .txt.
5Paste an expected hash into the Verify field to check for a match.

Frequently Asked Questions

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A high-security Keccak sponge variant producing 384-bit hashes. Suitable as a post-quantum alternative to SHA-384 for forward-looking applications.