Cryptography Tools
SHA3-512 Hash Generator
Generate a SHA3-512 digest from UTF-8 text in your browser. Its 512-bit output appears as 128 lowercase hex characters.
✓ 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 source text.
- Run the tool to calculate SHA3-512.
- Compare all 128 hex characters with a SHA3-512 reference.
- Copy or download the value alongside the algorithm name.
Examples
Check a configuration snapshot
The digest changes if a newline or any other byte changes.
Release manifest v3.1
A 128-character SHA3-512 hex digest
Fixed 512-bit SHA-3 output
SHA3-512 is a fixed-output SHA-3 function. It is useful when interoperating with a protocol that explicitly names SHA3-512 or verifying a published test vector. The 128-character hexadecimal result is the same length as a SHA-512 digest, but the algorithms are different. Always record the family and variant along with a digest. Choosing a tool from output length alone can create a hard-to-find mismatch.
The input is the UTF-8 encoding of the editor text. An apparently invisible trailing newline is enough to change the result. The tool works in the browser’s worker and does not upload the text. This plain digest does not conceal the original text or authenticate its author. Use AES-GCM for confidentiality and HMAC or signatures when you need authenticity. The NIST SHA-3 standard defines SHA3-512 and its related SHAKE functions.
For long outputs, copying only the visible beginning is an easy mistake. Use the Copy output button, which retains the complete value even when a very large preview is shortened. Check the result length in the receiving system before deciding whether a comparison passed.
Frequently asked questions
Is SHA3-512 equivalent to SHA-512?
No. Their output lengths match, but their SHA-3 and SHA-2 constructions differ.
Does SHA3-512 have adjustable output length?
No. Use SHAKE256 when a protocol asks for an extendable output function.
Can I use it as an encryption key?
Do not derive keys from arbitrary text this way; use a specified key derivation method.
Does input leave my browser?
No. It is processed locally in a worker.