BLAKE2b-512 is the full 512-bit output of BLAKE2b, with SHA-512 equivalent security at about one-third the computational cost. On 64-bit processors it is faster than MD5, making it the highest-performance 512-bit cryptographic hash available.

Why use BLAKE2b-512 when SHA-512 exists?

BLAKE2b-512 delivers equivalent security at roughly 3x speed. For high-throughput applications processing large data volumes, it dramatically reduces CPU usage while maintaining security.

What is the output size of BLAKE2b-512?

BLAKE2b-512 produces 512-bit hashes displayed as 128 hex characters. BLAKE2b can produce output of any length up to 64 bytes, with 512 bits being the maximum standard.

Is BLAKE2b-512 suitable for long-term archiving?

Yes. With 256-bit collision security, it is suitable for long-term data preservation. Its high speed makes it practical for hashing large archival datasets.

BLAKE2b-512 vs BLAKE3?

BLAKE3 is significantly faster (up to 10x on multi-core) due to Merkle tree parallelism. BLAKE2b-512 produces larger output (512 vs 256 bits), providing a larger security margin.

Tools

BLAKE2b-512|128 hex chars

Input

Output

Hash result will appear here...

0 chars|0 bytes

BLAKE2b-512 Hash Generator — 512-bit High-Speed BLAKE2

Full BLAKE2b output at 512 bits, security equivalent to SHA-512. Runs faster than MD5 on 64-bit CPUs — roughly 3× faster than SHA-512 while matching its security.

Features

✓Compute BLAKE2b-512 hashes online — high-speed 512-bit with SHA-512 level security
✓Real-time 512-bit hash computation with 128 hex character output
✓One-click copy, download as .txt, and uppercase/lowercase toggle
✓Runs faster than MD5 on 64-bit CPUs — approximately 3x faster than SHA-512
✓Hash verification against known BLAKE2b-512 checksums
✓100% browser-based with WebAssembly acceleration

How to Use

1Type or paste your text into the input box above.
2Your hash digest appears instantly — no page reload needed.
3Toggle UPPERCASE / lowercase to change the hex output format.
4Click the copy icon to copy the hash to clipboard, or use Download to save as .txt.
5Paste an expected hash into the Verify field to check for a match.

Frequently Asked Questions

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SHA-512 Hash Calculator — 512-bit Maximum Security

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