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MD5 Generator

Generate an MD5 hash of any text, instantly.

Developer Tools Free, no sign-up Runs in your browser
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MD5 is not a security function. Collisions can be constructed in seconds, so never use it for passwords, signatures, or verifying a file against someone who might want to deceive you. For that, use the SHA-256 Generator.

About the MD5 Generator

MD5 Generator produces the 128-bit MD5 digest of whatever you type or paste, shown as the familiar 32-character hexadecimal string. The result updates as you type and matches what any correct MD5 implementation produces for the same bytes.

A word about what MD5 is still good for. It is comprehensively broken as a security function: two different inputs that produce the same digest can be constructed in seconds on an ordinary laptop. That means MD5 proves nothing against anybody who can choose the input, and it must never be used for passwords, signatures, or verifying a download against a hostile party.

It remains genuinely useful for the jobs that do not involve an adversary. Checking that a file arrived intact, matching a value against an MD5 column an older system already stores, deduplicating records by content, and generating a stable cache key are all perfectly reasonable, and all of them are why this page exists.

The digest is calculated by a plain implementation of RFC 1321 written into the page. Browsers deliberately leave MD5 out of their built-in crypto, so it cannot come from there; it can, however, run entirely on your device, which is what happens here.

Everything runs inside your browser. Nothing you paste is uploaded, logged or stored, which matters when the input is a client list, an internal URL map or anything else you would not post publicly.

How to use the MD5 Generator

  1. Type or paste your textThe MD5 digest appears immediately and updates on every keystroke.
  2. Copy the hashOne button copies the 32-character value.
  3. Compare it if you are verifyingPaste a hash you were given to check whether it matches.
  4. Use SHA-256 for anything security-relatedA link is provided; MD5 is for integrity, not security.

Features

  • Standard 32-character hexadecimal MD5 output
  • Updates live as you type
  • Correct UTF-8 handling, so accented text and emoji hash correctly
  • A compare box that confirms whether a given hash matches
  • Implemented from RFC 1321 inside the page
  • Clearly labelled as legacy, with SHA-256 offered for security work
  • Nothing is uploaded or stored

Who uses this tool

The md5 generator is used by writers, developers, students, marketers and anyone else who needs the job done once without installing software. Common cases include:

  • Verifying a download against a published MD5 checksum
  • Matching a value stored by an older application or database
  • Deduplicating records by hashing their contents
  • Producing a stable cache key from a string
  • Learning how a hash changes when the input changes slightly

Frequently asked questions

Is MD5 safe to use?

Not for anything an attacker can influence. Collisions can be produced in seconds, so MD5 must never be used for passwords, digital signatures or verifying a file against an untrusted source. It is fine for checking accidental corruption and for matching values older systems already store.

Can an MD5 hash be reversed?

Not directly. Hashing is one-way. However, short or common inputs can be found by guessing, and vast precomputed tables of MD5 values exist, so an MD5 of a password offers almost no protection.

What should I use instead?

SHA-256 for general integrity and security work. For passwords specifically, neither MD5 nor SHA-256 is right: use a deliberately slow algorithm such as bcrypt, scrypt or Argon2 with a unique salt.

Why is MD5 not in the browser's crypto API?

Because the standard deliberately excludes it. Web Crypto exposes SHA-1 and the SHA-2 family and nothing weaker. The MD5 here is implemented in the page itself.

Does it handle non-English text?

Yes. The text is encoded as UTF-8 before hashing, which is what every other correct implementation does, so accented characters and emoji produce matching digests.

Is my text sent anywhere?

No. The calculation happens in your browser and the text never crosses the network.

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