Free EA Builder for MT4 and MT5
Build a compilable Expert Advisor without writing code. Choose the online MT5 builder, online MT4 builder, or the offline Windows app.
Updated 2026-11-04 · Free builder guides · No signup required
Choose the right builder
| Builder | Best for | Source output | Internet |
|---|---|---|---|
| Online MT5 EA Builder | Fast MT5 strategy generation in a browser | .mq5 | Required |
| Online MT4 EA Builder | MT4 users who need MQL4 output | .mq4 | Required |
| Offline EA Builder | Private desktop work and no-internet use | .mq4 and .mq5 | Not required |
All three use a rule-based engine: select indicators, define entry conditions, set stop loss, take profit, trailing, break-even, lot sizing and risk limits, then generate source code.
What the builder generates
- Complete MQL4 or MQL5 source code, not a locked preset.
- Indicator handles and entry conditions built from your selections.
- Stop loss, take profit, trailing stop and break-even options.
- Fixed lot or risk-percent position sizing.
- Spread, session, new-bar and prop-firm-style risk controls.
- Code preview, copy and download for MetaEditor.
The generated file still needs normal testing. A builder removes repetitive coding work; it does not remove market risk or the need for a demo test.
Learn before you build
Build an MT5 EA without coding
The full workflow from indicators to compiled .mq5.
Builder vs manual MQL5
When the builder is enough and when to hire a developer.
Offline vs online builder
Privacy, convenience and deployment differences.
MT5 backtest guide
Test the generated EA without fooling yourself with overfitting.
Risk management
Lot sizing, stops, drawdown and prop-firm limits.
MQL5 code generator
What the generated code contains and how to compile it.
EA Builder FAQ
Is the EA builder really free?
Yes. The online MT4 and MT5 builders are free with no signup. The offline app is also free; the optional Python source code is a separate paid product.
Do I get MQL4 or MQL5 source code?
Yes. The MT4 builder produces .mq4 source and the MT5 builder produces .mq5 source. The offline app supports both.
Can I sell an EA built with it?
You can use the generated source in your own projects. Check the exact license terms for redistribution or resale of the builder itself.
Will the generated EA be profitable?
No builder can guarantee profit. The generator produces code for your rules; strategy quality, spread, execution and risk management still determine results.
Choose the next useful step
Most visitors arrive with one question: build, test, price, or trust. These shortcuts keep the path practical.
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