MD5 Hashing Generator Online

Use our online encoder tool to encode any string into a MD5 hash. MD5 is used often to encrypt passwords before storing them into a database.

Online MD5 Encoder


MD5 is a widely used cryptographic hash function with a 128-bit hash value. MD5 is used often to encrypt passwords before storing them into a database. Enter a word or string into the form below to encode it into a md5 hash.

* String: one per line
Mỗi chuỗi cần encode thì xuống một dòng.
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What is md5?

MD5 is the abbreviation of 'Message-Digest algorithm 5'.
The MD5 algorithm is used as an encryption or fingerprint function for a file.
Often used to encrypt database passwords, MD5 is also able to generate a file thumbprint to ensure that a file is identical after a transfer for example. An MD5 hash is composed of 32 hexadecimal characters.
MD5 (Message Digest 5) is an algorithm that creates a chaotic output (message digest or hash code) based on your input. The length of an MD5 hash is 128 bits or 16 bytes. In this application it is represented by 32 characters in hexadecimal form.
The MD5 (message-digest) algorithm is a widely used hash function producing a 128-bit hash value. Although MD5 was initially designed to be used as a cryptographic hash function, it has been found to suffer from extensive vulnerabilities. It can still be used as a checksum to verify data integrity, but only against unintentional corruption. It remains suitable for other non-cryptographic purposes, for example for determining the partition for a particular key in a partitioned database.

MD5 was designed by Ronald Rivest in 1991 to replace an earlier hash function MD4, and was specified in 1992 as RFC 1321.

One basic requirement of any cryptographic hash function is that it should be computationally infeasible to find two distinct messages that hash to the same value. MD5 fails this requirement catastrophically; such collisions can be found in seconds on an ordinary home computer.

The weaknesses of MD5 have been exploited in the field, most infamously by the Flame malware in 2012. The CMU Software Engineering Institute considers MD5 essentially "cryptographically broken and unsuitable for further use".
As of 2020, MD5 continues to be widely used, in spite of its well-documented weaknesses and deprecation by security experts.

What is an MD5 hash?

An MD5 hash is created by taking a string of an any length and encoding it into a 128-bit fingerprint. Encoding the same string using the MD5 algorithm will always result in the same 128-bit hash output. MD5 hashes are commonly used with smaller strings when storing passwords, credit card numbers or other sensitive data in databases such as the popular MySQL. This tool provides a quick and easy way to encode an MD5 hash from a simple string of up to 256 characters in length.
MD5 hashes are also used to ensure the data integrity of files. Because the MD5 hash algorithm always produces the same output for the same given input, users can compare a hash of the source file with a newly created hash of the destination file to check that it is intact and unmodified.
An MD5 hash is NOT encryption. It is simply a fingerprint of the given input. However, it is a one-way transaction and as such it is almost impossible to reverse engineer an MD5 hash to retrieve the original string.

How do I get md5 hash?

To produce the MD5 hash of a regular text, type in the above MD5 encode box and click the Encode button. MD5 results cannot be decoded.
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