An EX5 file is a compiled program written for MetaTrader, an online trading platform. It contains executable code that has been compiled from an .MQ5 custom indicator, Expert Advisor, or script source code file. EX5 files replaced .EX4 files with the release of MetaTrader 5.

EX5 files are compiled from source code files by MetaEditor, a program included with MetaTrader software. The EX5 file may contain indicators, scripts, or an Expert Advisor, which is a program for automating the trading and analytical processes in MetaTrader. EX5 files can be distributed without the MQ5 source code file and can be run in the client terminal. MetaTrader is primarily used to trade Stock, Forex, Futures, and CFDs. It comes with technical analysis tools and enables the use of automated trading systems and copy trading.