# BLAKE2b Hash Generator

> Use this BLAKE2b hash generator and digest calculator for text or encoded bytes. Copy 512-bit results as Hex or Base64.

This **BLAKE2b hash generator** converts text or encoded bytes into a 512-bit digest. Reproduce BLAKE2b-512 checksums for application fixtures and data integrity checks. Choose lowercase Hex, uppercase Hex, or Base64, then copy the value for comparison.

## Overview & Metadata

- **Canonical URL:** https://million.tools/blake2b/
- **Markdown Copy (.md.txt):** https://million.tools/blake2b.md.txt
- **Plain Text Copy (.txt):** https://million.tools/blake2b.txt
- **SEO Title:** BLAKE2b Hash Generator Online | Hex and Base64
- **Alternative Names:** BLAKE2b-512 Calculator, Calculate a BLAKE2b Digest, BLAKE2b digest calculator, BLAKE2b checksum generator, BLAKE2b hash calculator, BLAKE2b online hasher
- **Category:** [Hash](https://million.tools/hash/)
- **Tags:** [#BLAKE](https://million.tools/tag/blake/)
- **Application Category:** `DeveloperApplication`
- **Platform:** Web (All modern desktop and mobile browsers, requires JavaScript)
- **Price:** Free ($0.00 USD, no registration or sign-up required)
- **Live Calculation:** Supported (`Auto / Live` toggle enabled by default)
- **Usage Statistics:** 1 use · 21 views
- **Published:** 2026-11-06
- **Last Updated:** 2026-11-06
- **Author:** Egor Volchenko (Developer & Author)

## Key Features

- Calculate fixed 512-bit BLAKE2b digests
- Interpret text, Hex, or Base64 input
- Display lowercase Hex, uppercase Hex, or Base64
- Update with Auto / Live or run manually
- Copy the digest and clear text
- Use the separately documented HMAC-style option

## Parameters & Interface Controls

### Input Parameters & Options
- `input_text`: Input text.
- `hmac_key`: Secret Key / Password.
- `input_encoding`: `Hex` | `Hex (Ignore Non-Hex Characters)` | `Base64` | `UTF-8` | `UTF-16LE` | `UTF-16BE` | `Windows-1251 (Cyrillic)` | `Windows-1252 (Latin 1)` | ... (42 options)
- `output_format`: `Hex (lower)` | `Hex (UPPER)` | `Base64`
- `hmac_enabled`: Boolean. Enable Keyed BLAKE2B.
- `hmac_encoding`: `Hex` | `Hex (Ignore Non-Hex Characters)` | `Base64` | `UTF-8` | `UTF-16LE` | `UTF-16BE` | `Windows-1251 (Cyrillic)` | `Windows-1252 (Latin 1)` | ... (42 options)

### Output Fields & Metrics
- `result`: BLAKE2b Hash Result.

- **Controls:** `Run`, `Clear`, `Copy`, `Fill test data`, `Auto / Live`

## Interactive Example (Test Vector)

**Settings:**
- Input Encoding: `UTF-8`
- Output Format: `Hex (lower)`
- Key Encoding (Search/Type): `UTF-8`

**Input text:**
```text
abc
```

**BLAKE2b Hash Result:**
```text
ba80a53f981c4d0d6a2797b69f12f6e94c212f14685ac4b74b12bb6fdbffa2d17d87c5392aab792dc252d5de4533cc9518d38aa8dbf1925ab92386edd4009923
```

## How to use BLAKE2b Hash Generator

Use the following steps to process a small test input.

### Calculate a BLAKE2b digest

1. **Enter the message:** Paste the message into Input text. Select UTF-8 under Input Encoding: for ordinary text, or select the representation of encoded bytes.
2. **Choose a plain digest:** Leave Enable Keyed BLAKE2B off for an unkeyed BLAKE2b digest. The separate keyed workflow below describes what that switch actually enables.
3. **Select the output:** Choose Hex (lower), Hex (UPPER), or Base64 for the result.
4. **Run the calculation:** Leave Auto / Live on to update the result as you edit. To run manually, turn it off and click Run.
5. **Read the digest:** Read BLAKE2b Hash Result. Keep the input bytes and the selected algorithm unchanged when comparing a reference value.
6. **Copy or clear the text:** Click Copy to copy the result. Use Clear where shown, or the field clear controls, to remove the text.

With UTF-8 input `abc` and the key switch off, lowercase Hex output is `ba80a53f981c4d0d6a2797b69f12f6e94c212f14685ac4b74b12bb6fdbffa2d17d87c5392aab792dc252d5de4533cc9518d38aa8dbf1925ab92386edd4009923`.

> A rejected request may leave an earlier result visible. Clear the fields and recheck the input before relying on a new calculation.

### Match bytes before comparing hashes

A message is hashed after Input Encoding: is applied. The UTF-8 string `616263` is different from Hex `616263`, which represents `abc`. Spaces and line endings also count as data.

### Understand the fixed digest size

This form returns 64 bytes, or 128 hexadecimal characters. It has no output-length control. A shorter native BLAKE2b digest is a different parameterized hash; simply truncating this result is not an equivalent setting.

### Use the shared HMAC-style option

1. Turn on Enable Keyed BLAKE2B. This selects the form’s HMAC-style operation, not native keyed BLAKE2b.
2. Enter the key in Secret Key / Password and select its representation with Key Encoding (Search/Type):.
3. Keep the message and output representation selected, then click Run or leave Auto / Live enabled.
4. Read BLAKE2b Hash Result and click Copy. Compare only against a reference using the same HMAC-style construction.

For UTF-8 message `abc` and UTF-8 key `key`, the enabled switch returns `05cc4815438d5cfe68fff446b8df57828cc96189de4b4e928e3f06d815d64e5bc15124a02ffd39859b3e2476da03bc0235ca86df623af2a5631779809e9fd04a` in lowercase Hex.

## Frequently asked questions

### Can I decrypt a BLAKE2b hash?
No. A hash is a one-way digest, not encrypted text. To check a candidate, hash the same bytes again and compare the results.

### Does the keyed switch use native keyed BLAKE?
No. Despite the label Enable Keyed BLAKE2B, this form uses an HMAC-style construction. It does not produce the native keyed BLAKE2b value expected by a system using that algorithm’s built-in key parameter.

### Why does my digest differ from another calculator?
Confirm BLAKE2b, the fixed 512-bit size, the exact message bytes, the input encoding, and whether the key switch is enabled. A final newline or a different byte encoding changes the digest.

### Can I choose a different output length?
No. The current result is fixed at 512 bits. Hex letter case and Base64 change the representation, not the number of digest bytes.

### Is plain BLAKE2b suitable for password storage?
A fast cryptographic hash alone does not provide password stretching. Password storage needs a dedicated password-hashing scheme with suitable salt and work parameters.

### Is the calculation performed only in my browser?
No. This form sends the entered data to the calculation API. Use sample data instead of production secrets.

## Related Tools

- [BLAKE2s Hash Generator](https://million.tools/blake2s/): Calculate a 256-bit BLAKE2s digest from text or encoded bytes. Choose Hex or Base64 output and inspect the separate HMAC option.
- [Argon2 Verify](https://million.tools/argon2-verify/): Check a candidate password against an existing encoded Argon2 hash. Read the match result and check format or parameter limits when verification fails.
- [Argon2 KDF](https://million.tools/argon2-kdf/): Generate a salted Argon2id encoded hash from test input. The current Argon2 KDF form returns a password-hash string rather than raw key bytes.
- [Argon2 Hash Generator](https://million.tools/argon2/): Generate a salted Argon2 password hash from text or encoded bytes. Copy the complete encoded string for development fixtures and password-verification tests.
- [SHA-224 Hash Generator](https://million.tools/sha224/): Generate a SHA-224 digest from text or encoded bytes. Choose hex or Base64 output, or test HMAC-SHA224 with a key.

## About the Author

**Egor Volchenko** — *Developer & Author*

Hi! I’m a WordPress developer with over 10 years of experience. I love Tailwind CSS, clean code, and intuitive interfaces. I’m currently working on million.tools — a service with convenient online tools for everyday tasks. I’m building it from scratch with great attention to detail and user experience.

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