The Quest for Source: The Truth About Converting EX4 to MQ4 for Free

Several utilities have been released over the years, often by Russian or Eastern European developers. Examples include "EX4 to MQ4 Decompiler," "eX4toMq4," and "Decompiler for MT4."

How do you convert EX4 to MQ4 for free?

This leads to the million-dollar question:

Can you convert EX4 to MQ4 for free?

Many traders encounter an .ex4 file—often purchased or received for free—and wish to convert it back to .mq4 to modify the code, fix bugs, or understand how the strategy works. The question is:

contact the developer

If you purchased an EA or indicator, and ask for the source code. Some sellers provide MQ4 upon request for a small fee (or free if you have proof of purchase).