Algorithm reference

BLAKE3-256 hash calculator

BLAKE3-256 is a highly parallel modern digest with extensible output.

Modern 256-bit output 64 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 BLAKE3-256

Fast file hashing, content addressing, and applications designed explicitly for BLAKE3.

Collision resistance

No practical collision is publicly known for the full algorithm.

Examples

Use BLAKE3-256

Command line

printf %s "hello" | b3sum

Go

sum := blake3.Sum256([]byte("hello")); fmt.Printf("%x\n", sum)

Python

blake3.blake3(b"hello").hexdigest()

JavaScript / browser

BLAKE3 requires a reviewed local implementation; WebCrypto does not expose it.

Common password examplesPublic deterministic compatibility pages