MD5 Hash Generator

This is an entirely client-side MD5 Hash generator. Your data does not hit our servers, and so remains completely confidential and GDPR compliant (check Web Inspector to verify if you like!)

The MD5 hash function has extensive vulnerabilities

MD5 has not been suitable for cryptographic/security purposes for a long time. MD5 collision attacks are trivial and can be carried out in seconds on modern hardware.

You should not use this as a password hashing mechanism or rely on MD5 checksum validation to verify original source material (eg. files, certificates). MD5 file checksums are still useful to verify the integrity of downloads where file corruption is the concern, rather than malicious tampering.

What's an MD5 hash anyway?

The MD5 algorithm is a one-way hash function. Like all hashing algorithms, it takes an input of any length and produces a fixed length output in the form of a 128-bit hash value (sometimes known as a "digest").

MD5 hashes are typically represented as 32 hexadecimal characters. For example, the MD5 hash of the preceding sentence is:

4add44d5196db563d64805aa3e7f29e8

Even very minor differences in the input value will^[1] produce a significantly different hash value. Therefore it is often used to quickly verify if two sets of data or source material are exactly the same. Downloading large files for example, can sometimes result in file corruption, so an MD5 hash of the original file is often provided to allow users to verify that their downloaded copy of the file matches the original.

However see the security note above for why it is considered bad practice to use MD5 for any type of cryptographic or security purposes, including checking for maliciously altered files or source material. It is trivial for example to create two different files that produce the same MD5 hash.

[1] with very high probability