Cryptography Tools
SHA-512/256 Hash Generator
Calculate the standardized SHA-512/256 digest of UTF-8 text. Its 256-bit output is a 64-character lowercase hex string.
✓ Every tool runs in your browser. We do not upload your input or output.
Keyboard shortcuts
Ctrl/⌘ + Enter: process
Ctrl/⌘ + Shift + F: full screen
Esc: exit full screen
Ctrl/⌘ + F in editor: search
How to use
- Paste the exact message or configuration text.
- Run the tool to calculate SHA-512/256.
- Compare it with a reference that names this precise variant.
- Copy the full hex string for a fixture or integration check.
Examples
Verify a test payload
The output length matches SHA-256, but the value and algorithm differ.
Release manifest v3.1
A 64-character SHA-512/256 hex digest
Choose by algorithm name, not length
SHA-512/256 is a separate SHA-2 algorithm specified for a 256-bit result. It can be useful when a protocol calls for that exact function. Its 64-character hex output looks the same length as SHA-256, but the values are not interchangeable. It is also not the first half of a SHA-512 digest. When checking an integration, copy the complete algorithm name from the protocol and use a matching reference implementation.
The browser calculates the digest over UTF-8 text. A copied carriage return, trailing space, or different normalization changes the result. Keep exact input alongside test vectors so failures can be reproduced. The site does not transmit text to a hashing endpoint. This digest is a compact one-way summary, not encryption or a proof of sender identity. For authenticated messages use HMAC with a shared secret. The NIST SHA-2 standard defines SHA-512/256 and explains its distinct initialization.
If a system labels a field only as sha256, ask whether it means the SHA-256 algorithm or any 256-bit digest. The distinction matters for interoperability. Store the precise SHA-512/256 identifier with the checksum instead of relying on output length.
Frequently asked questions
Is SHA-512/256 equal to SHA-256?
No. Both yield 256 bits, but they use different SHA-2 constructions.
Can I cut SHA-512 in half?
No. The standardized variant has a distinct initial state.
Can I use it for password storage?
Use a dedicated password hashing algorithm instead of a single fast digest.
What input encoding is used?
The editor text is encoded as UTF-8 before hashing.