MD5 Hash Generator

MD5 Hash Generator

Generate an MD5 hash of text or a file. MD5 is useful for checksums and fingerprints — never for passwords (see the note below).

Your hash will appear here.

The MD5 Hash Generator produces the familiar 32-character MD5 fingerprint of any text or file you give it, entirely in your browser. MD5 hashes are used to verify downloads, spot duplicate files, fingerprint cache keys, and compare data quickly: change even one byte of the input and the hash is completely different, while the same input always gives the same hash.

You can type or paste text, or choose a file and hash its exact bytes. An uppercase toggle matches the formatting some systems expect, and the copy button puts the result on your clipboard. This page carries its own compact MD5 implementation in vanilla JavaScript, because browsers do not include MD5 in their modern crypto API.

The honest warning, repeated because it matters: MD5 is not secure for passwords or signatures. Collisions can be created on purpose, so never protect accounts with it. For integrity checks against accidental corruption it remains perfectly serviceable, and for anything security-sensitive use the SHA Hash Generator on this site instead. Nothing you hash here is uploaded.

How to use

  1. Type text in the box, or choose a file (the file takes priority).
  2. Tick UPPERCASE if you need the hash in capital letters.
  3. Click Generate MD5.
  4. Copy the hash from the result panel.

Frequently asked questions

Why is MD5 called unsafe?

Researchers can deliberately craft two different inputs with the same MD5 hash. That breaks uses like password storage and digital signatures. It does not affect simple checksums against accidental damage.

Can a hash be turned back into the original?

No. Hashing is one-way by design. The only way to "reverse" a short input is guessing it and hashing the guess, which is why short, common passwords should never rely on MD5.

Does the file hash match other tools?

Yes. The file mode hashes the raw bytes exactly as standard command-line tools do, so results agree with md5sum and similar utilities.

Is my file uploaded?

Never. The file is read locally by your browser and hashed on your device.