BLAKE3 Generator
Generate the BLAKE3 hash of any text in a single click. The tool encodes your input as UTF-8, runs the BLAKE3 function in its default 256-bit hashing mode and returns the digest as 64 hex characters or in Base64. It matches the b3sum command and the official BLAKE3 libraries, so developers can check fixtures, cache keys and content addresses that use this very fast modern hash.
Frequently asked questions
What is BLAKE3?
BLAKE3 is a cryptographic hash function published in 2020 by the designers of BLAKE2 and the Bao tree mode. It splits input into 1 KiB chunks arranged in a Merkle tree, which allows parallel hashing. Its default output is 256 bits.
What are the BLAKE3 test values?
An empty input hashes to af1349b9f5f9a1a6a0404dea36dcc9499bcb25c9adc112b7cc9a93cae41f3262. The text abc hashes to 6437b3ac38465133ffb63b75273a8db548c558465d79db03fd359c6cd5bd9d85. These are the values the reference implementation and b3sum return.
Does the tool support keyed hashing or key derivation?
No. It uses BLAKE3's plain hashing mode with the standard 256-bit output. Keyed hashing and the derive_key mode need a separate key or context string, which this tool does not take.
Is BLAKE3 faster than SHA-256?
In software BLAKE3 is usually several times faster than SHA-256, and it scales across cores for large inputs. For the short texts you paste here, the difference is not noticeable.
Is BLAKE3 secure?
BLAKE3 targets 128-bit security for collisions and preimages, the same level as SHA-256. It uses fewer rounds than BLAKE2, a choice its designers justify with extensive cryptanalysis of the BLAKE family.
How is the text encoded?
The tool hashes the UTF-8 bytes of your text exactly as entered. A trailing line break or different line endings change the digest completely.
Can I get a longer BLAKE3 output?
BLAKE3 can produce output of any length, but this tool always returns the standard 32-byte digest. That is what b3sum and most libraries print by default.
Should I use BLAKE3 for passwords?
No. BLAKE3 is designed to be as fast as possible, which is the opposite of what password storage needs. Use Argon2, bcrypt or scrypt for passwords.
What is the input limit?
Each request accepts up to 5 MiB of text. The input is hashed on the server and is not stored or logged.
Hex or Base64: which should I choose?
Hex matches b3sum and most documentation. Base64 is shorter and works well in JSON or URLs after replacing its special characters. Both encode the same 32 bytes.