# Hash Algorithm Comparator 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. > Canonical page: https://elysiatools.com/en/tools/hash-algorithm-comparator - **Category:** Cryptography - **Keywords:** hash, md5, sha-1, sha-256, sha-512, blake2, blake3, checksum, digest, crypto, hashing algorithm, benchmark, base64, hex ## Overview 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). ## Inputs - **Input text** (textarea): The bytes to hash. Interpreted according to the input encoding. - **Input encoding** (select) - **Output encoding** (select) - **Algorithms** (select): Which algorithms to run. Leave default to compare all. - **Iterations (benchmark)** (number): How many times to hash for the speed benchmark. Set to 0 to skip timing. ## 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 - Input your data as UTF-8 text, raw hex bytes, or Base64 bytes into the primary input field. - Select the specific hashing algorithms you want to compare and choose your preferred output encoding format. - Specify the number of iterations to run for the speed benchmark, or set it to zero to skip the performance test. - View 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. ## Frequently asked questions ### 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? 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