SHA512 Hash Generator

What is SHA-512?

This tool covers three separate algorithms from the SHA-2 family, all standardized in NIST FIPS 180-4:

• SHA-512/224 returns 224 bits, 28 bytes, or 56 hexadecimal characters.
• SHA-512/256 returns 256 bits, 32 bytes, or 64 hexadecimal characters.
• SHA-512 returns the full 512 bits, 64 bytes, or 128 hexadecimal characters.

Pick a variant, then hash typed text or uploaded files. Results come back as raw digest bytes and lowercase hexadecimal.

Why the truncated variants are not shortcuts

SHA-512/224 and SHA-512/256 are their own algorithms, not aliases for SHA-224 and SHA-256 and not simply the first bytes of a SHA-512 digest. They run the SHA-512 structure with distinct initialization values, so they produce entirely different output from the similarly named SHA-2 members.

The reason to want them is speed with a shorter result. The SHA-512 core uses 64-bit words and outruns SHA-256 on 64-bit processors, so SHA-512/256 delivers a 32-byte digest faster than SHA-256 does on most modern hardware.

Are there alternatives?

SHA256 is more widely supported and the safer default when another system has to read your digests. SHA384 comes from the same 64-bit core if you want a middle length.

BLAKE3 and BLAKE2b outperform all of them, and SHA3 offers an unrelated internal design. Anything involving a password belongs with Argon2id Hash Generator instead.

Fun facts and more info

The truncated variants resist length extension because their output hides part of the internal state. Full SHA-512 does not, which is one more reason to reach for HMAC Generator when a secret key is in play.

Names in this family are a reliable source of confusion. SHA-512/256 and SHA-256 both give you 32 bytes and will never agree on what those bytes are, so always match the exact algorithm the other side names.