XAUUSD Lot Size Calculator1. What This Indicator Does
This tool is a Visual Risk Management System. Instead of using a calculator on your phone or switching tabs, it allows you to calculate the exact lot size for your trade directly on the TradingView chart by dragging lines.
It automates the math for:
Lot Size: How big your position should be to risk exactly X% of your account.
Take Profit: Where your target should be based on your Risk-to-Reward ratio.
Safety Checks: It warns you if your stop loss is too tight for the minimum lot size (0.01).
2. Visual Features
🔴 The Red Line (Stop Loss): This is your interactive line. You can grab it with your mouse and drag it to your desired invalidation point (e.g., below a support wick).
🟢 The Green Line (Take Profit): This line moves automatically. You cannot drag it. It calculates where your Take Profit must be to satisfy your Risk:Reward ratio (Default 1:1) based on where you placed the Red line.
⚫ The Info Table: A high-contrast black box in the corner that displays your calculated Lot Size, Risk amount, and Trade direction (Long/Short).
3. How to Use It (Step-by-Step)
Step 1: Initial Setup
When you first add the indicator to the chart, you need to tell it about your account:
Double-click the Black Table (or the Red Line) to open Settings.
Inputs Tab:
Account Balance: Enter your current trading balance (e.g., 10,000).
Risk %: Enter how much you want to lose per trade (e.g., 1.0%).
Contract Size: Keep this at 100 for Gold (XAUUSD) or standard Forex pairs.
Risk : Reward Ratio: Set your target (e.g., 1.0 for 1:1, or 2.0 for 1:2).
Step 2: Planning a Trade
Look at the chart and identify where you want to enter (current price) and where you want your Stop Loss.
Find the Red Line on your chart. (If you don't see it, go to Settings and change "Stop Loss Level" to a price near the current candle).
Click and Drag the Red Line to your specific Stop Loss price.
Step 3: Reading the Signals
Direction: If you drag the Red Line below the price, the table shows LONG. If you drag it above, it shows SHORT.
Lot Size: Read the big green number in the table (e.g., 0.55). This is the exact lot size you should enter in your broker.
TP Target: Look at the Green Line on the chart. That is your exit price.
Step 4: The "Orange Warning"
If you place your Stop Loss very close to the entry, or if your account is small, the math might suggest a lot size smaller than is possible (e.g., 0.004).
The table text will turn ORANGE.
The Lot Size will stick to 0.01 (the minimum).
The "Risk ($)" row will show you the actual risk. (Example: Instead of risking your desired $100, you might be forced to risk $105 because you can't trade smaller than 0.01 lots).
Pine Script® インジケーター
