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SHA3-224 Hash

Generate a SHA3-224 hash from any text instantly. Everything is computed in your browser, so your input never leaves your device.

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What is SHA3-224?

SHA3-224 is a cryptographic hash function from the SHA-3 family (Secure Hash Algorithm 3), standardized by NIST in 2015, that produces a fixed 224-bit (28-byte) digest output. Built on the Keccak sponge construction, SHA3-224 offers strong collision resistance and preimage protection, making it suitable for modern security-critical applications. This free online tool generates SHA3-224 hashes instantly in your browser with no data uploaded to any server, protecting your privacy while providing cryptographic assurance for passwords, file integrity verification, digital signatures, and blockchain applications.

How SHA3-224 works

SHA3-224 uses the Keccak sponge construction, a fundamentally different approach from older SHA algorithms. The process works in two phases:

  1. Absorption Phase: The input message is broken into blocks and XORed into an internal state of 1600 bits. Each block is followed by a transformation using the Keccak-f[1600] permutation function, which applies 24 rounds of five cryptographic operations: theta (parity), rho (rotation), pi (permutation), chi (nonlinear mixing), and iota (round constants).
  2. Squeezing Phase: The hash output is extracted from the state in blocks. For SHA3-224, exactly 28 bytes (224 bits) are extracted and returned as the final digest.

The sponge construction ensures that even a tiny change to the input produces a completely different hash, making SHA3-224 ideal for detecting tampering.

Example Structure: If you hash the input "hello", the Keccak-f permutation processes the message bits through 24 rounds of mixing, rotation, and nonlinear transformations. The output is a 56-character hexadecimal string (28 bytes = 224 bits), where each character represents 4 bits. Different inputs will always produce different hashes with overwhelming probability.

How to use

  1. Type or paste your text into the input box.
  2. The SHA3-224 hash is calculated automatically as you type.
  3. Choose your output encoding (Hex or Base64) if needed.
  4. Click Copy to copy the digest to your clipboard.

Common uses

  • Password storage: Hash passwords before storage so even database breaches don't expose plain-text credentials
  • File integrity verification: Generate hash digests to verify files haven't been corrupted or tampered with during transmission
  • Digital signatures and authentication: Enable cryptographic signing that proves message authenticity and origin
  • Blockchain and distributed ledger: Used in transaction verification and block creation for trustless systems
  • API request validation: Hash request parameters to create secure checksums preventing tampering with data in transit
  • Software release verification: Hash source code or executables to let users confirm downloads match official releases

Frequently asked questions

Is SHA3-224 secure against attacks?
Yes. SHA3-224 provides 112-bit collision resistance and strong preimage protection against classical and quantum attacks, making it suitable for current cryptographic needs. It was standardized by NIST in 2015 as a modern alternative to SHA-2.
Can SHA3-224 hashes be reversed to recover the original input?
No. Cryptographic hashing is a one-way function by design. There is no practical method to reverse a SHA3-224 hash back to the original input, making it ideal for password protection.
How many characters is a SHA3-224 hash?
A SHA3-224 hash is always 56 hexadecimal characters long (28 bytes = 224 bits). Each hex character represents 4 bits of the digest.
Is my data safe using this online tool?
Yes. This SHA3-224 generator runs entirely in your browser with no server uploads. Your input is processed locally and never transmitted to external servers, ensuring complete privacy.
How is SHA3-224 different from SHA-256?
SHA3-224 produces a 224-bit digest and uses the Keccak sponge algorithm, while SHA-256 produces 256-bit output using the Merkle-Damgard construction. SHA-3 was designed as a modern alternative with different internal architecture.
Can I use SHA3-224 for storing passwords?
Yes. SHA3-224 can be used for password hashing, though pairing it with a salt (random data) is recommended to prevent rainbow table attacks. For maximum security, dedicated password hashing algorithms like bcrypt or Argon2 are preferred.