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SHA-512 hash generator

Paste anything below. The SHA-512 digest updates as you type. The text never leaves this page — the hash is computed locally with window.crypto.subtle.digest.

309ecc489c12d6eb4cc40f50c902f2b4d0ed77ee511a7c7a9bcd3ca86d4cd86f989dd35bc5ff499670da34255b45b0cfd830e81f605dcf7dc5542e93ae9cd76f

About SHA-512

SHA-512 is the bigger sibling of SHA-256: same SHA-2 family, twice the output, slightly higher security margin against future attacks. Recommended when you have the budget for 64 bytes of digest.

  • Produces a 512-bit (64-byte) digest, rendered as 128 hex characters.
  • Faster than SHA-256 on 64-bit CPUs, slower on 32-bit ones.
  • No known practical collisions. Used in TLS, code signing and disk-format checksums.

Common use cases

  • High-margin integrity checks (firmware, OS images).
  • KDF salt input for stronger derived keys.
  • Long-term archival checksums where future collision resistance matters.
  • HMAC-SHA-512 for high-security signing.

Same hash via API

If you need to compute SHA-512 from a server or in another language, hit the Oxide Hash & Encryption Toolkit — same algorithm, sub-5 ms at the edge, free tier available.

curl -X POST https://hash-toolkit1.p.rapidapi.com/v1/hash \
  -H "Content-Type: application/json" \
  -H "X-RapidAPI-Key: YOUR_KEY" \
  -H "X-RapidAPI-Host: hash-toolkit1.p.rapidapi.com" \
  -d '{"algorithm":"sha512","input":"hello world"}'

FAQ

What is SHA-512?

SHA-512 is the bigger sibling of SHA-256: same SHA-2 family, twice the output, slightly higher security margin against future attacks. Recommended when you have the budget for 64 bytes of digest.

How many characters is a SHA-512 hash?

SHA-512 produces a 512-bit digest, which renders as exactly 128 hexadecimal characters or 86 base64 characters.

Is this SHA-512 tool secure?

Yes — the hash is computed entirely in your browser using the built-in Web Crypto API (window.crypto.subtle.digest). The text you paste never leaves your machine, and nothing is logged on our end.

Can I hash SHA-512 from an API?

Yes. The Oxide Hash & Encryption Toolkit exposes /v1/hash with algorithm:"sha512" so you can compute the same hash from a server with sub-5 ms latency at the network edge.