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BLAKE2b Hash Generator

Generate BLAKE2b cryptographic hashes from text input. Faster than MD5 and SHA with maximum security. Supports 256-bit, 384-bit, and 512-bit output sizes.

Free to useNo sign-up requiredUpdated Jan 2026
BLAKE2b Hash GeneratorTry it now — free ▼
Try example inputs:
Hello World Quick Fox BLAKE2b Info Empty String

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Video Guide: BLAKE2b Hash Generator

Video guide with full transcript

About BLAKE2b Hash Generator

Welcome to the BLAKE2b Hash Generator, a professional cryptographic tool for generating BLAKE2b hashes from any text input. BLAKE2b is one of the fastest and most secure hash functions available, outperforming MD5, SHA-1, SHA-2, and SHA-3 in speed while maintaining excellent cryptographic strength.

Key Features of BLAKE2b

Lightning Fast

BLAKE2b is faster than MD5 and SHA families on modern 64-bit CPUs while providing superior security.

Highly Secure

Based on the BLAKE hash function (SHA-3 finalist), providing strong resistance against all known attacks.

Flexible Output

Supports variable output sizes from 1 to 64 bytes, with common options of 256, 384, and 512 bits.

What is BLAKE2b?

BLAKE2b is a cryptographic hash function optimized for 64-bit platforms. It was designed by Jean-Philippe Aumasson, Samuel Neves, Zooko Wilcox-O'Hearn, and Christian Winnerlein as an improved version of the BLAKE hash function, which was a SHA-3 competition finalist. BLAKE2b can produce hash digests of any size from 1 to 64 bytes (512 bits maximum).

How to Use This Tool

  1. Enter your text: Type or paste the text you want to hash into the input area. You can also import text from a file.
  2. Select output size: Choose your preferred hash length: 256-bit (64 hex chars), 384-bit (96 hex chars), or 512-bit (128 hex chars).
  3. Generate hash: Click the button to compute the BLAKE2b hash of your input.
  4. Copy result: Use the copy button to copy the hash to your clipboard.

BLAKE2b vs Other Hash Functions

Hash Function Output Size Speed Security Status
BLAKE2b Up to 512 bits Very Fast Secure
SHA-256 256 bits Medium Secure
SHA-512 512 bits Medium Secure
SHA-3-256 256 bits Slower Secure
MD5 128 bits Fast Broken
SHA-1 160 bits Medium Broken

Common Use Cases

File Integrity Verification

Verify that downloaded files have not been corrupted or tampered with by comparing hash values.

Data Deduplication

Identify duplicate data blocks in storage systems using content-addressable storage techniques.

Digital Signatures

Create message digests for digital signature schemes to ensure data authenticity.

Blockchain Applications

Used in cryptocurrencies like Zcash and various blockchain protocols for efficient hashing.

Password Hashing (via Argon2)

BLAKE2b is used internally by Argon2, the recommended password hashing algorithm.

Message Authentication

Generate keyed hashes (MACs) for message authentication with BLAKE2b's built-in keying mode.

Technical Specifications

Frequently Asked Questions

What is BLAKE2b?

BLAKE2b is a cryptographic hash function that is faster than MD5, SHA-1, SHA-2, and SHA-3, while being at least as secure as SHA-3. It was designed by Jean-Philippe Aumasson, Samuel Neves, Zooko Wilcox-O'Hearn, and Christian Winnerlein. BLAKE2b is optimized for 64-bit platforms and can produce digests of any size between 1 and 64 bytes.

What are the differences between BLAKE2b and BLAKE2s?

BLAKE2b is optimized for 64-bit platforms and produces digests up to 64 bytes (512 bits), while BLAKE2s is optimized for 8-bit to 32-bit platforms and produces digests up to 32 bytes (256 bits). BLAKE2b is generally faster on 64-bit systems, while BLAKE2s performs better on smaller architectures.

Is BLAKE2b secure for password hashing?

While BLAKE2b is cryptographically secure, it is designed for speed which makes it less suitable for password hashing directly. For password hashing, consider using Argon2 (which uses BLAKE2b internally) or bcrypt, which are specifically designed to be slow and memory-hard to resist brute-force attacks.

What output sizes does BLAKE2b support?

BLAKE2b can produce hash digests of any size from 1 to 64 bytes (8 to 512 bits). Common output sizes include 256 bits (32 bytes, 64 hex characters), 384 bits (48 bytes, 96 hex characters), and 512 bits (64 bytes, 128 hex characters). The default and maximum size is 512 bits.

Where is BLAKE2b used?

BLAKE2b is used in many applications including file integrity verification, digital signatures, password hashing (via Argon2), blockchain technologies (like Zcash), content-addressable storage systems, and as a general-purpose cryptographic hash function in libraries like libsodium and various programming language standard libraries.

How does BLAKE2b compare to SHA-256?

BLAKE2b is significantly faster than SHA-256 on 64-bit systems while providing equivalent or better security. In benchmarks, BLAKE2b can be 2-3 times faster than SHA-256. Both are considered cryptographically secure, but BLAKE2b offers better performance and more flexibility with its variable output size.

Additional Resources

Reference this content, page, or tool as:

"BLAKE2b Hash Generator" at https://MiniWebtool.com/blake2b-hash-generator/ from MiniWebtool, https://MiniWebtool.com/

by miniwebtool team. Updated: Jan 27, 2026

Developer API available: Run this tool from your app, automation, or agent with one JSON HTTP request. View API docs

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