Gold Position Size Calculator (XAUUSD) for MT5

Related: Prop Firm Risk Calculator: Position Sizing and Loss Limits - another powerful indicator for MetaTrader 5 traders.

Gold Position Size Calculator (XAUUSD) is a free risk management indicator for MetaTrader 5, designed specifically for gold traders.

Also recommended: Turtle Breakout Indicator Performance Analysis on Gold (2025-2026) - similar indicator with strong performance on MetaTrader 5.

Most retail gold traders lose money not because of bad entries, but because of wrong position sizes. Risking a fixed lot size on XAUUSD means every trade carries a different, unknown risk. This indicator applies the classic risk-based position sizing formula: Lot size = (Balance x Risk %) / (Stop distance in points x Tick value per lot), so that if the stop-loss is hit, the loss equals exactly the chosen percentage of the account - no more, no less.

How it works

- Attach the indicator to a Gold (XAUUSD) chart. It works on any timeframe.
- Set your account balance and risk per trade (%).
- Enter your entry price (or leave 0 to use the current price) and your stop-loss price.
- Optionally set a take-profit price.
- Read the calculated lot size from the panel - that is the position size that risks exactly your chosen % if the stop is hit.

The panel shows: balance, risk %, risk amount, stop distance in points, calculated lot size, risk/reward ratio and potential profit. Entry, stop-loss and take-profit lines are drawn directly on the chart.

External variables (inputs)

- InpAccountBalance - account balance used in the calculation
- InpRiskPercent - risk per trade in percent of the balance
- InpEntryPrice - planned entry price (0 = current close)
- InpStopPrice - stop-loss price (0 = not set)
- InpTakeProfit - take-profit price (0 = not set)
- InpContractSize - contract size per 1.00 lot (0 = read automatically from the symbol specification)
- InpShowLines - show or hide entry, stop and TP lines
- InpShowPanel - show or hide the info panel
- InpPanelCorner - panel corner

Notes

- Contract size is read automatically from the broker's symbol specification, so the indicator works on XAUUSD, XAUUSDm, gold futures and any other instrument without manual setup.
- The math is non-repainting: values are recalculated only when inputs change or a new bar opens.
- This is a risk calculation tool, not a signal service: it does not open trades and does not promise profits.

A Pro version with one-click execution, break-even, trailing stop and partial close is in development (expected 2026).

You may also like: CME Gap Tracker for Gold and Bitcoin: Analysis of Open Gaps, Fill Rates, and Fade-Trade Performance - excellent alternative for indicator users on MetaTrader 5.

#property copyright "RobotFX"
#property version     "1.10"
#property description "This code is educational. Feel free to use, modify and upgrade as you wish. Visit ROBOTFX.ORG for professional trading tools"
#property indicator_chart_window
#property indicator_buffers 3
#property indicator_plots   3
#property indicator_label1  "Entry"
#property indicator_type1   DRAW_LINE
#property indicator_color1  clrDodgerBlue
#property indicator_style1  STYLE_SOLID

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• This tool is provided for educational and testing purposes only.
• Past performance does not guarantee future results.
• Trading involves substantial risk of loss. Use on a demo account first.
• Results may vary depending on market conditions, broker, and settings.
• We recommend thorough backtesting and forward testing before using with real funds.