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SHA-512 Hash Generator

Free online SHA-512 hash generator. Compute the SHA-512 digest of any text instantly using the browser's Web Crypto API. 100% private, nothing uploaded.

sha-512.run

SHA-512 vs SHA-256 — what is the difference?

SHA-512 is SHA-256's bigger sibling: a 512-bit digest (128 hex characters) computed with 64-bit arithmetic. Both are considered secure with no practical attacks; SHA-512's larger output gives an even wider security margin.

A useful detail: on 64-bit processors SHA-512 is often faster than SHA-256 for large inputs, because it processes data in bigger blocks. Choose either — consistency within a system matters more than the choice itself.

How to use

  1. 01Type or paste the text you want to hash.
  2. 02Click Generate SHA-512.
  3. 03Toggle UPPERCASE if needed.
  4. 04Copy the 128-character SHA-512 digest.

Frequently asked questions

When should I choose SHA-512 over SHA-256?
Both are considered secure. SHA-512 offers a larger security margin and is actually faster on 64-bit CPUs, making it a good choice for hashing large inputs.
How long is a SHA-512 hash?
SHA-512 produces a 512-bit digest, displayed as 128 hexadecimal characters.
Is hashing done locally?
Yes. Your browser's Web Crypto API computes the digest — no data leaves your device.

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