Algorithm reference

BLAKE2b-512 hash calculator

BLAKE2b-512 is a fast modern digest from the BLAKE2 family.

Modern 512-bit output 128 hex characters

Digest calculator

Text to hash

Private result

Never enter a real account password or any other secret. Submitted text is processed by the server, but never placed in the URL, logs, analytics, or ads.

Practical guidance

About BLAKE2b-512

High-performance integrity checks, content addressing, and keyed hashing where the protocol specifies BLAKE2.

Collision resistance

No practical collision is publicly known for the full algorithm.

Examples

Use BLAKE2b-512

Command line

printf %s "hello" | b2sum

Go

sum := blake2b.Sum512([]byte("hello")); fmt.Printf("%x\n", sum)

Python

hashlib.blake2b(b"hello").hexdigest()

JavaScript / browser

BLAKE2 is not currently part of the widely deployed WebCrypto digest set.

Common password examplesPublic deterministic compatibility pages