Online SHAKE256 Hash Generator
A SHA-3 XOF with 256-bit security and a free-choice output length. Paste your text and click the button to compute its SHAKE256 hash — everything runs on your device and is never sent to a server.
Everything runs in your browser. Your data is never sent to our servers.
Example
Example Input
hello world
Example Output
369771bb2cb9d2b04c1d54cca487e372d9f187f73f7ba3f65b95c8ee7798c527f4f3c2d55c2d46a29f2e945d469c3df27853a8735271f5cc2d9e889544357116
How to Use
- 1Type or paste the text you want to hash into the Input field.
- 2Open "More settings" to configure the output length if needed.
- 3Click the Generate Hash button (or press Ctrl+Enter) to compute the SHAKE256 hash.
- 4The SHAKE256 hash appears in the Output field. Click Copy to copy it to your clipboard.
- 5Click Clear to empty the fields and start over.
About SHAKE256
SHAKE256 is an extendable-output function (XOF) from the SHA-3 family, standardized in FIPS 202. Unlike ordinary hash functions with a fixed output length, SHAKE256 lets you choose the output length you need.
How it works: SHAKE256 uses the same Keccak sponge construction as SHA-3, but its "squeeze" phase can keep emitting as many bits as requested. Its security level is around 256-bit, independent of the chosen output length (as long as it is long enough).
SHAKE256 is useful when you need a custom-sized output — e.g. key generation, mask generation (MGF), or deterministic random-byte derivation. Set the output length (in bits) via the "More settings" panel.
FAQ
How do I set the output length?
Open the "More settings" panel and enter the output length in bits. Because SHAKE is an XOF, you can choose any length (a default is provided).
How long is a SHAKE256 hash?
A SHAKE256 hash is variabel (default 512-bit) / variable (default 512-bit) long (panjang dapat diatur / adjustable length).
Is my data sent to a server?
No. The SHAKE256 hash is computed entirely in your browser. The text you enter never leaves your device.