MD4 Hash Generator

Generate an MD4 hash from any text input. MD4 produces a 128-bit (32 hex characters) digest. This tool runs client-side in your browser, so your input is not sent to a server.

What is MD4?

MD4 (Message Digest 4) is an old cryptographic hash function. It is considered broken for security and should not be used for new cryptographic designs. It is still useful for legacy compatibility and tooling.

How to use

Enter your text in the input box.
The MD4 hash is generated instantly.
Copy or download the hash output.

Common use cases

Legacy systems that still require MD4 digests.
Testing and verifying known MD4 test vectors.
Compatibility checks when migrating older software.

Frequently Asked Questions

Is MD4 secure?

No. MD4 is not secure and should not be used for passwords, signatures, or any security-sensitive hashing. Use SHA-256 or SHA-3 for modern security needs.

What does the output mean?

The output is a 128-bit digest shown as 32 hexadecimal characters. The same input always produces the same output.

Does this tool support Unicode text?

Yes. You can hash any text you paste into the input, including Unicode characters. Keep in mind that different systems may hash different byte encodings; always compare using the same encoding.