SHA-512 Hash Generator
Drop any file, get its SHA-512 checksum. 100% private — runs entirely on your device via native WebCrypto.
Drop any file here
Computes SHA-512 hash — stays on your device
Why generate a SHA-512 hash?
- Verifying large Linux ISOs or scientific datasets where SHA-512 is the publisher's preferred algorithm.
- Producing high-assurance fingerprints for sensitive documents in legal or forensic work.
- Checking signed archives where the maintainer publishes SHA-512 alongside SHA-256.
- Generating long-term integrity fingerprints for data archives stored on cold storage.
- Fingerprinting binaries for audit trails in regulated environments (FIPS, HIPAA).
- Matching hashes for software where the build process uses SHA-512 for reproducibility.
How our converter works
Your file is hashed using the browser's native WebCrypto API (crypto.subtle.digest with SHA-512). The 512-bit hash (128 hex characters) is written in GNU coreutils format — <hash> <filename> — for direct verification with `sha512sum -c`. No network, no upload, no trace.
Frequently asked questions
When should I use SHA-512 over SHA-256?
SHA-512 is faster on 64-bit CPUs than SHA-256 (it's designed around 64-bit words) and produces a longer hash for additional preimage resistance margin. If the publisher lists both, SHA-512 is the stronger choice. For general use, SHA-256 is more than enough.
How long is a SHA-512 hash?
512 bits, shown as 128 hexadecimal characters. That's the longest of the SHA-2 family — the output stays the same length regardless of whether you're hashing a byte or a terabyte.
Is SHA-512 slower than SHA-256?
Counterintuitively, SHA-512 is often *faster* than SHA-256 on modern 64-bit CPUs because its internal operations use 64-bit words natively. On 32-bit embedded devices, SHA-256 is faster.
What's SHA-384 and why does it also exist?
SHA-384 is SHA-512 truncated to 384 bits. It exists for protocols that need a hash longer than 256 bits but shorter than 512 bits — most famously, it's the hash used alongside ECDSA P-384 keys in TLS. For file integrity, SHA-256 or SHA-512 is almost always the right choice.
How do I verify my download against a published SHA-512?
Put the generated .sha512 file and the original file in the same directory. On Linux/macOS run `sha512sum -c filename.sha512`. On Windows, `certutil -hashfile filename SHA512` will produce the hex to compare by eye.
Does the hash generator work offline?
Yes. SHA-512 is computed via your browser's built-in WebCrypto — no library download, no network activity. Once the page is loaded, you can disconnect entirely.