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SHA-512 Hash Generator

Get the 512-bit SHA-512 digest of your text or hex bytes, ready to copy as hex or Base64.

Processed locally in your browser

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The result will appear here.

What is SHA-512 Hash Generator?

SHA-512 is the largest member of the SHA-2 family: it works on 64-bit words and yields a 512-bit digest written as 128 hexadecimal characters. On 64-bit CPUs it is often faster than SHA-256, and it is used in Linux shadow password formats ($6$), Ed25519 signatures, HMAC-SHA512 API signing and file checksums.

The tool converts your text to UTF-8 bytes (or reads hex bytes), hashes them with a WebAssembly SHA-512 and displays the digest in hex or Base64 with the input byte length.

How does it work?

  1. Type or paste the text to hash.
  2. Choose the input type, output encoding and upper or lower case.
  3. Copy the 128-character digest. The empty string hashes to cf83e1357eefb8bd…

Common use cases

  • Checking a SHA-512 checksum published beside an ISO or a release archive.
  • Reproducing the hash used in an API request signature.
  • Deriving a long, deterministic identifier from a string.
  • Testing your own SHA-512 code against a known digest.

Examples

Try this input in the tool above:

Input
The quick brown fox jumps over the lazy dog
Output
07e547d9586f6a73f73fbac0435ed76951218fb7d0c8d788a309d785436bbb642e93a252a954f23912547d1e8a3b5ed6e1bfd7097821233fa0538f3db854fee6

Privacy

SHA-512 Hash Generator runs entirely in your browser. The text or files you provide are processed on your device and are not uploaded, logged or stored on our servers.

Limitations

SHA-512 alone is not suitable for storing passwords because it is fast; combine passwords with a slow KDF such as PBKDF2, scrypt or Argon2.

Frequently asked questions

Is SHA-512 more secure than SHA-256?

It has a larger digest and security margin, but SHA-256 is already considered secure for all current uses. Choose SHA-512 when a spec asks for it or for its speed on 64-bit hardware.

Why is the digest 128 characters long?

512 bits equal 64 bytes, and each byte is written with two hex characters.

Can two different texts have the same SHA-512?

In theory yes, since inputs are unlimited and outputs are not, but no collision has ever been found and finding one is far beyond current computing power.

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