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Cryptography

Hash Algorithm Comparator

· Last updated：2026-06-26

Hash the same input with MD5, SHA-1, SHA-256, SHA-512, BLAKE2b, and BLAKE3 at the same time and compare them side by side: output length, hex/Base64 digest, security status (broken / modern), and a relative speed benchmark. Great for teaching, choosing a hashing algorithm, or sanity-checking checksums.

Details

What this tool helps you do

A side-by-side cryptographic hash comparison tool for developers, security researchers, and teaching:

  1. Input — type text, or paste hex / Base64 bytes. The same bytes are fed to every algorithm.
  2. Algorithms — MD5, SHA-1, SHA-256, SHA-512, BLAKE2b-256, BLAKE2b-512, BLAKE3 (toggle which to run).
  3. Output — each digest is shown in hex and/or Base64 with its bit length.
  4. Security status — each algorithm is tagged Broken (collisions feasible: MD5, SHA-1) or Modern (SHA-2, BLAKE2, BLAKE3).
  5. Benchmark — optionally hash the input N times and report wall-clock ms plus a relative-throughput bar chart (fastest = 1.0×).

All hashing runs locally via the hash-wasm library (WASM implementations, no network calls).

Execution

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Written by the Elysia Tools team
Color214
Length59
Speed53
Encryption40
HEX40
Hash30
Modern19
Base6416
MD55

Tool usage guide

Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Category
Cryptography
Input types
textarea, select, number
Output type
html
Sample coverage
4
API ready
Yes

Overview

The Hash Algorithm Comparator is a local, WebAssembly-powered utility that allows you to hash a single input simultaneously using MD5, SHA-1, SHA-256, SHA-512, BLAKE2b, and BLAKE3. It provides a side-by-side comparison of output digests, bit lengths, security statuses, and relative speed benchmarks to help you select the optimal cryptographic hash for your application.

When to use

  • When evaluating the performance and security trade-offs of modern hashing algorithms like SHA-256, SHA-512, and BLAKE3.
  • When you need to generate and compare hex and Base64 digests of the same input data simultaneously.
  • When teaching cryptographic concepts and demonstrating the differences in hash lengths, collision risks, and execution speeds.

How it works

  1. 1Input your data as UTF-8 text, raw hex bytes, or Base64 bytes into the primary input field.
  2. 2Select the specific hashing algorithms you want to compare and choose your preferred output encoding format.
  3. 3Specify the number of iterations to run for the speed benchmark, or set it to zero to skip the performance test.
  4. 4View the side-by-side results showing the generated digests, bit lengths, security status tags, and relative throughput speeds processed entirely in your browser.

Use cases

  • Comparing the throughput of SHA-256, SHA-512, and BLAKE3 on a specific payload to optimize database indexing.
  • Generating both hex and Base64 checksums of API payloads for verification purposes.
  • Demonstrating the output size differences and security classifications of various hash functions in educational environments.

Examples

1. Comparing Modern Hash Performance

Backend Engineer

Background

A backend engineer is designing a high-throughput file storage service and needs to choose a fast, secure hashing algorithm to generate unique file identifiers.

Problem

They need to compare the speed and output format of SHA-256, SHA-512, and BLAKE3.

How to use

Enter a sample payload in the input text area, select SHA-256, SHA-512, and BLAKE3, set the output encoding to 'Both', and set iterations to 1000.

{
  "input": "hello world",
  "inputEnc": "utf8",
  "outputEnc": "both",
  "algos": ["sha256", "sha512", "blake3"],
  "iterations": 1000
}

Outcome

The comparison table displays the hex and Base64 digests alongside their bit lengths, showing BLAKE3 as the fastest algorithm in the relative throughput chart.

2. Verifying Legacy Checksums

Security Auditor

Background

An auditor is reviewing legacy system logs containing MD5 and SHA-1 hashes and wants to verify their values and highlight their security risks.

Problem

They need to generate MD5 and SHA-1 digests of a known string and document their 'Broken' security status.

How to use

FAQ

Does this tool send my input data to any external servers?

No. All hashing and benchmarking operations are executed locally in your browser using WebAssembly via the hash-wasm library, ensuring your data remains private.

What do the 'Broken' and 'Modern' security statuses mean?

'Broken' indicates legacy algorithms like MD5 and SHA-1 where cryptographic collisions are computationally feasible. 'Modern' indicates secure algorithms like SHA-256, SHA-512, and the BLAKE family.

Can I input raw binary data instead of plain text?

Yes. You can input binary data by encoding it as hex or Base64 bytes and selecting the corresponding input encoding option.

How is the relative speed benchmark calculated?

The tool hashes the input data for the specified number of iterations, measures the execution time, and displays a relative throughput ratio compared to the fastest algorithm.

Why would I choose BLAKE3 over SHA-256?

BLAKE3 is highly optimized for modern hardware architectures and is typically much faster than SHA-256 while maintaining a highly secure cryptographic profile.

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Paste the target string into the input box, select MD5 and SHA-1, and set iterations to 0 since benchmarking is not needed.

{
  "input": "The quick brown fox jumps over the lazy dog",
  "inputEnc": "utf8",
  "outputEnc": "hex",
  "algos": ["md5", "sha1"],
  "iterations": 0
}

Outcome

The tool displays the hex digests for MD5 and SHA-1, clearly marking both algorithms with a red 'Broken' security status.