SHA256 OnlineMatch a SHA512 release reference
Use the full 128-character value. It cannot be shortened to a SHA256 checksum.
SHA-2 · 512 bits · Text
SHA512 Hash Generator
Calculate SHA512 from UTF-8, Hex or Base64 text. Compare a trusted expected digest locally.
Input No upload
Output Your result · SHA512
SHA512 calculated
0 decoded bytes · UTF-8 · input changes update automatically
Browser-local hashing. Inputs masked in Clarity.
No account. No uploads. Just your browser.
Generate SHA512 from exact bytes
- 1
Enter or decode your message
Start empty, paste UTF-8 text, or choose Hex or Base64 for encoded bytes.
- 2
Inspect the full digest
SHA512 returns 128 lowercase hex characters. Copy digest preserves the whole output.
- 3
Compare or reproduce a keyed result
Paste a trusted reference, or enable HMAC only for a keyed protocol.
SHA512 text workflows
Reproduce a keyed test vector
Use HMAC-SHA512 only when the protocol calls for that operation and the exact key bytes are available.
Keep full-length output
Copy or download the full digest instead of manually selecting a wrapped line.
SHA512 versus SHA256
| Algorithm | What differs |
|---|---|
| SHA512 | 512-bit SHA-2 digest, displayed as 128 hex characters. |
| SHA256 | 256-bit SHA-2 digest, displayed as 64 hex characters. |
Details that affect your SHA512 result
How SHA512 works
SHA512 is part of SHA-2 and produces a 512-bit result: 128 hexadecimal characters. Copy the entire digest; comparing only a prefix is not full verification. It is distinct from SHA512/256 and SHA384.
Some publishers distribute .sha512 files. Keep the full 128-character digest and exact filename. A 64-character SHA256 value is not a shortened SHA512 value and is rejected by this checker.
Generate a SHA512 hash from exact bytes
Type or paste text for an automatic result. UTF-8 preserves whitespace and line endings. Hex accepts pairs of digits with optional whitespace; Base64 requires the standard padded alphabet. Invalid encoding stops calculation instead of hashing a different input.
The default result is the digest of zero bytes. The abc example contains exactly 61 62 63 in hex with no newline. Adding Enter changes the bytes and therefore the result.
Compare a value or use a key
Paste a complete hexadecimal expected value to see Match or Mismatch. Outer whitespace and uppercase hex are accepted; incomplete digests, filenames and embedded spaces are not.
HMAC-SHA512 calculates a keyed hash. Enable HMAC and enter the secret in its own encoding. An empty key is a valid key and differs from turning HMAC off. Keys are never saved or included in exported reports.
Switch to files without changing the algorithm
The SHA512 file checksum tool reads raw bytes in chunks and supports batch manifests. Text mode is limited to 8 MiB decoded input; use file mode for larger data.
No input is uploaded. Only a light/dark theme preference is stored. Copy and report downloads remain on your device.
Known SHA512 result: empty input
SHA512 · 0 bytes · no HMAC. Empty input is not the same as no file selected.
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3eSHA512 hash generator FAQ
Is SHA512 just SHA256 repeated twice?
No. SHA512 is a distinct SHA-2 algorithm with a 512-bit result. Repeating or concatenating a SHA256 output will not generate SHA512.
Why is my SHA512 shown on several lines?
The full 128-character hex digest wraps to fit the panel. Visual wrapping adds no bytes to the digest; Copy digest copies the complete value.
Can this calculate SHA512/256?
No. SHA512/256 uses different initialization and is not simply this SHA512 output cut in half. This page implements SHA512 only.
Does a larger SHA512 output encrypt my message?
No. A longer hash is still a fingerprint, not reversible encryption. HMAC adds a key for message checking; it does not conceal message contents.
How do I hash encoded bytes with SHA512?
UTF-8 hashes literal text. Hex and standard padded Base64 decode to bytes first. abc, Hex 616263 and Base64 YWJj represent the same bytes; invalid encodings stop calculation.
Will spaces or Enter change my SHA512?
Yes. Text is not trimmed. A trailing newline, carriage return, byte-order mark or extra space changes the byte sequence and usually the result.
How do I compare a SHA512 expected value?
Paste exactly 128 hexadecimal characters. Uppercase and outer whitespace are accepted. Match means equality with your reference, not proof of a trustworthy source.
Where does this SHA512 generator store my input?
Text and keys stay in browser memory, not URLs or localStorage. The tool saves only your theme preference; Clarity may use its own identifiers, as explained in Privacy. Text mode accepts up to 8 MiB of decoded bytes; use file mode for larger inputs.