MQL5 Tester

A backtesting tool for traders and developers to simulate MT5 Expert Advisors using configurable parameters and view performance insights.

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About This Tool

The MQL5 Tester Online tool offers a simplified backtesting environment for MT5 Expert Advisors. Users input balance, symbol, timeframe, date range, and risk parameters. It estimates performance metrics by applying a simplified risk‑based trade model to the specified horizon. The tool is designed for traders, quants, and EA developers who need quick, repeatable comparisons without running a full MT5 client.

Conceptually, the engine uses a fixed risk representation: position size derived from risk_per_trade, a defined stop loss and take profit in pips, and market data such as spread and slippage. It can run in deterministic mode or scenario-based variants, computes an equity curve, and outputs metrics like net profit, maximum drawdown, win rate, profit factor, and average trade value. The tool supports multiple scenario runs to test parameter stability.

Use cases include pre-trade analysis, strategy screening, and parameter tuning. Its unique value lies in offering MT5-aligned inputs, reproducible results, and exportable summaries for documentation. It is not a full MT5 engine, but a lightweight proxy for rapid EA evaluation, enabling rapid comparison across symbols and time frames.

Save your calculation history with a free account

How to Use

Provide inputs: initial_balance, symbol, time_frame, start_date, end_date, risk_per_trade, stop_loss_pips, take_profit_pips, spread_pips, slippage_pips, leverage, ea_parameters.
Configure horizon and data scope: select date range and instrument list.
Run calculation: initiate the backtest to generate metrics.
Review outputs: total_profit, max_drawdown, win_rate, profit_factor, equity_curve_summary.
Export results: download CSV or JSON for records and documentation.

Frequently Asked Questions

Find Quick Answers

What data does the tool use?

The tool uses configurable historical data and market parameters. By default it covers common forex instruments across major timeframes and allows user-specified ranges. Data quality indicators appear if data gaps exist to help interpret results.

Can I import full MT5 EA code?

The tool accepts EA parameters and simplified rule definitions but does not compile or run MT5 source code. You can model rules via input fields and presets to compare parameter-driven behavior.

What metrics are produced?

Metrics include net profit, total trades, win rate, max drawdown, profit factor, and an equity_curve_summary. These support strategy comparison, risk assessment, and parameter tuning decisions.

What are the limitations?

This is a lightweight backtester, not a full MT5 engine. It assumes a fixed risk model and synthetic trade outcomes. Results are indicative and suitable for preprocessing, screening, and planning rather than live trading.

Need to run multiple calculations?

Create a free account today to unlock unlimited daily runs, access advanced parameters, save your history, and request custom features.

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