MD5 & SHA Hash Generator
Generate MD5, SHA-1 and SHA-256 hashes from any text online. Verify checksums and compare hashes. Free, and all hashing runs locally in your browser.
About this tool
Generate MD5, SHA-1, and SHA-256 hashes from any text, computed entirely in your browser. Developers verify file integrity, compare data without exposing it, and produce checksums — and because hashing is local, whatever you're fingerprinting stays on your machine.
How to Generate a Hash
- 1
Enter or paste the text to fingerprint — a password candidate, file contents, an API payload, or any string.
- 2
All three digests — MD5, SHA-1, and SHA-256 — are computed simultaneously as hexadecimal strings.
- 3
Copy the hash you need for your checksum comparison, cache key, deduplication check, or test fixture.
Why Hash with Wrklyst
- Inputs Stay In-Browser
- Hashing sensitive strings on a remote service defeats the purpose; here the digest is computed by your own machine and nothing is transmitted.
- Three Algorithms at Once
- Seeing MD5, SHA-1, and SHA-256 together saves the re-run when you're matching a checksum of unknown provenance.
- Instant for Any Input
- Digests appear as you type — no submit button, queue, or account between you and the answer.
Hashing Know-How
- Verifying a download? Match the algorithm the publisher used — comparing an MD5 against a SHA-256 fails by definition.
- A single flipped character avalanches the whole digest; near-identical hashes never mean near-identical inputs.
- Never store passwords with these fast hashes — that job needs bcrypt or argon2 with salts.
- Hash-compare environment configs across servers to spot drift without reading every line.
Frequently asked questions
What is a hash actually useful for?
A hash is a fixed-length fingerprint that changes completely if even one input bit changes. That property powers integrity checks (does this download match the published checksum?), deduplication (have we seen this content before?), cache keys, and commit identifiers — anywhere you need to compare data without comparing all of it.
Which algorithm should I use?
SHA-256 for anything security-relevant — it remains collision-resistant and industry-standard. MD5 and SHA-1 are cryptographically broken (collisions can be manufactured) but survive legitimately in non-adversarial roles: cache keys, quick change detection, and matching legacy checksums that were published in those formats.
Can a hash be reversed to reveal the input?
Not mathematically — hashing destroys information, so no algorithm recovers the input from the digest. The practical caveat: common inputs are vulnerable to lookup. The MD5 of "password123" appears in every rainbow table. Hashes hide content only when the input has real entropy.
Why does the same text sometimes give a different hash than another tool?
The bytes differ even when the text looks identical: a trailing newline, Windows versus Unix line endings, a UTF-8 BOM, or an invisible character each yield a completely different digest. When two tools disagree, diff the raw input carefully — the algorithm isn't wrong; the bytes are different.