Online SHA3-256 Hash Generator
The most common SHA-3 variant with a secure 256-bit output. Paste your text and click the button to compute its SHA3-256 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
644bcc7e564373040999aac89e7622f3ca71fba1d972fd94a31c3bfbf24e3938
How to Use
- 1Type or paste the text you want to hash into the Input field.
- 2Click the Generate Hash button (or press Ctrl+Enter) to compute the SHA3-256 hash.
- 3The SHA3-256 hash appears in the Output field. Click Copy to copy it to your clipboard.
- 4Click Clear to empty the fields and start over.
About SHA3-256
SHA3-256 is part of the SHA-3 family, a hashing standard published by NIST in 2015 (FIPS 202). SHA-3 is built on the Keccak algorithm that won the NIST hash competition, and produces a 256-bit hash value.
How it works: unlike SHA-2, SHA-3 uses a "sponge" construction — data is absorbed into an internal state via the Keccak-f permutation, then squeezed back out. This design makes it immune to the length-extension attacks that affect SHA-1/SHA-2.
SHA3-256 is secure and recommended for modern applications. Because its structure differs from SHA-2, SHA-3 is often used as a cryptographic alternative/backup should SHA-2 ever weaken — giving security systems algorithm diversity.
FAQ
How long is a SHA3-256 hash?
A SHA3-256 hash is 256-bit long (64 karakter heksadesimal / 64 hexadecimal characters).
Is my data sent to a server?
No. The SHA3-256 hash is computed entirely in your browser. The text you enter never leaves your device.