EazyTools4u

SHA3-256 Hash Generator

Free online SHA3-256 hash generator. Compute SHA-3 256-bit digests for text and files instantly in your browser.

Text mode — hashes your input as UTF-8 characters

Best for strings, passwords, JSON, and code. Need to verify a download against a published checksum? Switch to and drop the file in — text mode cannot reproduce a file checksum.

0 bytes (UTF-8)
SHA-3256-bit

Enter text above to generate SHA3-256 hash

Text encoded as UTF-8 · All processing is local

Related Hash Generators

Keccak-256SHA-256SHA3-224SHA3-384SHA3-512MD5SHA-1SHA-512

Need all algorithms at once? Open the full Hash Generator for every supported algorithm.

What is SHA3-256?

SHA3-256 is the 256-bit member of the SHA-3 family standardized by NIST in 2015. Built on the Keccak sponge construction, it offers a fundamentally different design from SHA-256 while producing the same digest length. SHA3-256 is growing in adoption for applications that want SHA-3 assurance alongside 256-bit outputs.

Common use cases:

  • Post-quantum migration planning and SHA-3 evaluation
  • Smart contract and blockchain tooling using NIST SHA-3
  • Generating SHA3-256 test vectors for library development
  • Integrity checks where SHA-3 is explicitly required

Examples

InputSHA3-256 Hash
Eazytools4udc6a267733819ff4dd05f0167e150f1c5d8dbf8d0757fb647532724566e13005
abc3a985da74fe225b2045c172d6bd390bd855f086e3e9d525b46bfe24511431532
hello3338be694f50c5f338814986cdf0686453a888b84f424d792af4b9202398f392

Programming Examples

Node.js
const crypto = require("crypto");

const hash = crypto.createHash("sha3-256")
  .update("hello", "utf8")
  .digest("hex");

console.log(hash); // SHA3-256 hex digest
Python
import hashlib

digest = hashlib.sha3_256(b"hello").hexdigest()
print(digest)  # SHA3-256 hex digest
OpenSSL CLI
echo -n "hello" | openssl dgst -sha3-256 -hex

Frequently Asked Questions

Is SHA3-256 the same as Keccak-256?

No. SHA3-256 uses NIST Keccak padding (suffix 0x06). Keccak-256 (as used by Ethereum) uses original padding (0x01). They produce different digests for the same input.

Should I use SHA3-256 or SHA-256?

SHA-256 has broader ecosystem support. Use SHA3-256 when your specification requires SHA-3 or you want the sponge construction family.

Is SHA-3 quantum-resistant?

SHA-3 is not fully quantum-proof, but its sponge construction is considered a strong alternative to SHA-2 with different security assumptions.

Can I hash files locally?

Yes. File mode reads binary bytes in your browser without uploading.

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