SHA224 Hash Generator

What the SHA-224 generator does

This produces the SHA-224 hash of your text, a 56-character hex fingerprint. Type or paste your text, press Convert, and copy or download the result. It is the shortest member of the main SHA-2 family, a close relative of SHA-256 with a slightly smaller output.

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 SHA-224 hash appears, ready to Copy or Download.

SHA-224 is SHA-256, trimmed

SHA-224 runs on the exact same engine as SHA-256. It does all the same internal work, then produces a shorter result: 224 bits instead of 256, which comes to 56 hex characters instead of 64. So you can think of it as SHA-256 with a slightly smaller fingerprint, and it carries the same family strength behind it.

One careful point, though, in case you ever try to check it by hand. SHA-224 is not simply SHA-256 with the last few characters lopped off. It starts the calculation from a different set of internal seed values, so the hash of a given text in SHA-224 is genuinely its own value, not the opening 56 characters of that text's SHA-256. The two are cousins, not the same number cut to different lengths.

When you would want it

In honesty, most of the time you would not choose SHA-224 over SHA-256, and SHA-256 is the everyday pick. SHA-224 earns its place in the narrower cases where a standard or a system specifically asks for a 224-bit digest. That length lines up with a particular security level that pairs neatly with certain other cryptographic choices, so it shows up inside specifications that were designed around that matching. If something you are working with calls for SHA-224 by name, this is the tool. If you are just looking for a good general-purpose hash, reach for SHA-256 instead, which is covered in full on its own page.

The library doing the work

The hashing is handled by js-sha256, the same small JavaScript library that powers SHA-256 and which also provides SHA-224. Your text is read as UTF-8 bytes and run through the algorithm in your browser, with the 56-character hex result handed back.

Questions people ask

Is SHA-224 just SHA-256 cut short?

It uses the same engine and produces a shorter output, but it starts from different seed values, so its hash is its own value, not the first 56 characters of the SHA-256 hash.

Why would I use it over SHA-256?

Mainly when a standard or system specifically requires a 224-bit digest. For general use, SHA-256 is the more common choice.

Can I reverse a SHA-224 hash?

No. It is one-way: the original is discarded and only a fingerprint remains, so there is nothing to decode back. See the SHA-256 page for the longer explanation.

References

1. National Institute of Standards and Technology (2015). FIPS PUB 180-4: Secure Hash Standard (SHS). https://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.180-4.pdf
2. js-sha256, a SHA-256 and SHA-224 implementation for JavaScript (npm package). https://www.npmjs.com/package/js-sha256