SHA-224 Hash Generator
Generate the SHA-224 hash of any text instantly using a verified pure JavaScript implementation (SHA-224 isn't in the Web Crypto API).
How to Use the SHA-224 Hash Generator
Type or paste any text into the input box — the SHA-224 hash is computed live and shown as a 56 hex character digest. SHA-224 uses the exact same internal compression function as SHA-256, but starts from different initial hash values and truncates the final result to 224 bits, dropping the last 32-bit word of the SHA-256 computation. Because SHA-224 isn't part of the browser's native Web Crypto API, this tool computes it with a pure JavaScript implementation of the algorithm, verified against the official published test vectors.
Example
Hashing the text abc produces 23097d223405d8228642a477bda255b32aadbce4bda0b3f7e36c9da7, one of the official published SHA-224 test vectors.
Common Use Cases
- Generating a shorter SHA-2 family digest when a specification calls for SHA-224 specifically.
- Verifying interoperability with backend systems or libraries that produce SHA-224 checksums.
- Learning how truncating a SHA-256-style computation produces a distinct, valid digest.
FAQs
- Why isn't SHA-224 built into the browser like SHA-256? The Web Crypto API's
crypto.subtle.digestonly implements SHA-1, SHA-256, SHA-384, and SHA-512 natively — SHA-224 was left out of the standard. This tool works around that by implementing the SHA-224 algorithm directly in JavaScript, verified against NIST's official test vectors. - Is SHA-224 just a shortened SHA-256? Essentially, yes for output length — it runs the identical round function and message schedule as SHA-256, but starts from a different set of eight initial hash values and only outputs the first seven of the eight resulting 32-bit words, giving 224 bits instead of 256.
- Is my text uploaded anywhere? No — hashing happens entirely client-side in your browser using the JavaScript implementation on this page. Nothing you type is sent to a server.