SHA-512 Hash Generator

What is SHA-512?

SHA-512 is the largest member of the SHA-2 family. It produces a 512-bit digest — 128 hexadecimal characters — and processes data in 64-bit words, which makes it surprisingly fast: on modern 64-bit CPUs SHA-512 often outperforms SHA-256.

Example: the SHA-512 hash of hello is 9b71d224bd62f3785d96d46ad3ea3d73319bfbc2890caadae2dff72519673ca72323c3d99ba5c11d7c7acc6e14b8c5da0c4663475c2e5c3adef46f73bcdec043 — the tool above is pre-filled so you can see it live.

Is SHA-512 secure?

Yes. No practical collision or preimage attack exists against SHA-512, and its 512-bit state gives the biggest security margin of any SHA-2 variant — 256 bits of collision resistance. It is approved by NIST for all security applications.

Common uses of SHA-512

• File integrity on 64-bit systems: many Linux distributions publish SHA-512 checksums for their images.
• Digital signatures: the Ed25519 signature scheme uses SHA-512 internally.
• Legacy password storage: sha512crypt (seen in Linux /etc/shadow) wraps SHA-512 with salt and thousands of rounds — for new systems prefer Argon2, bcrypt or scrypt.

Other hash generators

Need a different digest? Pick another algorithm — each has its own page:

Or go back to the Hash Generator homepage to see all five hashes at once.

Why does my hash not match another tool?

Hashes are computed over bytes, not characters, so two inputs that look identical can still produce different digests. The three usual causes:

• A trailing newline. The shell command echo "secret" hashes "secret" plus a line break, while printf %s "secret" (or echo -n) hashes just the word. Text copied out of a terminal often carries that invisible newline.
• Character encoding. This tool encodes your input as UTF-8 before hashing. "café" is 5 bytes in UTF-8 but 4 bytes in Latin-1, so a tool using a different encoding returns a different digest for the same word. Make sure both sides use UTF-8.
• Stray whitespace. Leading or trailing spaces from copy-paste change the input — and therefore the hash. This tool hashes exactly what sits in the box, byte for byte.

Digest sizes at a glance

Every algorithm has a fixed output length, so a quick character count tells you whether a pasted hash is complete or truncated:

Letter case is only display formatting: toggling Uppercase hex does not change the underlying value, and two digests that differ only by case are the same hash.

Frequently asked questions