Hash Generator
Compute MD5, SHA-1, SHA-256, SHA-384 and SHA-512 digests of any text instantly. Powered by the Web Crypto API and entirely client-side.
Hashed locally · nothing uploadedHow it works
A cryptographic hash function maps arbitrary input to a fixed-length string of bytes. The same input always produces the same digest, and even a single-character change produces a completely different result. This makes hashes ideal for verifying file integrity, deduplicating data and storing password verifiers (with a salt and a slow KDF).
This tool encodes your text as UTF-8 and runs it through five algorithms. SHA-1, SHA-256, SHA-384 and SHA-512 are computed with the browser's native crypto.subtle.digest() — the same primitives used for TLS. MD5 is not exposed by the Web Crypto API because it is broken, so it is computed by a small self-contained implementation bundled with the page. Everything runs on your device; the input is never transmitted.
Prefer SHA-256 or stronger for anything security-sensitive. Treat MD5 and SHA-1 as non-cryptographic checksums only — practical collision attacks exist for both.
Frequently asked questions
Is my text sent to a server?
crypto.subtle.digest() Web Crypto API, and MD5 is computed with a small in-page implementation. Your input never leaves your device.Why is MD5 handled differently from the SHA hashes?
Which algorithm should I use?
SHA-256 or higher. MD5 and SHA-1 are fine for non-security checksums (e.g. cache keys, ETags) but are considered broken for anything requiring collision resistance.Does the output change with encoding?
openssl, Node.js or Python.