Calculate MD5 digest (checksum) hash

Calculate the MD5 digest (checksum) hash of a file or text online.

Calculates the MD5 hash of a given file or text. MD5 hashes, or Message Digests, allow you to make sure that a file was transported in whole from one medium to the other. For example, if you download a file from a web site, and the web site said the MD5 sum of the file must be X, you can download the file to your computer, upload it here, and compare the MD5 you get here to X. If they are the same, you have downloaded the file correctly. If not, you may need to download it again. While MD5 is useful to check the integrity of downloaded file, for instance, it is not useful if someone intentionally tried to provide you with a malicious file bearing the same MD5 digest. That's because MD5 cannot guarantee that two files will not have a similar MD5 hash.

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