SHA3-224 Hash Generator

What the SHA3-224 generator does

This produces the SHA3-224 hash of your text, a 56-character hex fingerprint, the shortest output in the SHA-3 family. Type or paste your text, press Convert, and copy or download the result. Like every hash it is one-way, so there is no turning the result back into your text.

It runs in your browser, so nothing you enter is uploaded.

How to use it

1. Enter your text. Type or paste it, or upload a plain text file.
2. Press Convert. The 56-character SHA3-224 hash appears, ready to Copy or Download.

The shortest fingerprint in the SHA-3 set

SHA3-224 is the most compact of the four SHA-3 hashes, giving a 224-bit result against the 256, 384, and 512 of its siblings. It is built the same way they are, on the sponge construction that sets the whole SHA-3 family apart from the older SHA hashes, which is explained in full on the SHA3-256 page. You would reach for the 224 size when you want SHA-3's distinct, modern design but a shorter fingerprint, often to fit a standard or a system that was specified around a 224-bit digest.

SHA3-224 and SHA-224 are not the same

This is the easy mistake to make, because there is also a SHA-224 in the older SHA-2 family, and both produce a 56-character hash. They are not the same, and they are not from the same world. SHA-224 belongs to SHA-2 and is built on the old Merkle-Damgård design; SHA3-224 belongs to SHA-3 and is built on the sponge. Run the same text through each and you get two completely different results. So the "3" in the middle matters: if something asks for SHA-224, the plain SHA-224 tool is what you want, and if it asks for SHA3-224, this is the one. They share a length and nothing else.

The library doing the work

The hashing is handled by js-sha3, a small JavaScript library implementing the SHA-3 family. Your text is read as UTF-8 bytes and run through the sponge in your browser, with the 56-character hex result handed back.

Questions people ask

Is SHA3-224 the same as SHA-224?

No. They produce the same length of hash but come from different families, SHA-3 and SHA-2, built on different designs. The same input gives different results, so they are not interchangeable.

Why use the 224 size?

When you want SHA-3's design but a shorter, 224-bit fingerprint, usually because a standard or system specifically calls for it. For a general hash, SHA3-256 or SHA-256 is more common.

Can I reverse a SHA3-224 hash?

No. It is one-way, so the original text cannot be recovered. See the SHA-256 page for why no hash can be reversed.

References

1. National Institute of Standards and Technology (2015). FIPS PUB 202: SHA-3 Standard: Permutation-Based Hash and Extendable-Output Functions. https://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.202.pdf
2. js-sha3, a SHA-3 and Keccak implementation for JavaScript (npm package). https://www.npmjs.com/package/js-sha3