Position Size Calculator MT5 Indicator

Overview

Position Size Calculator is a built-in risk management tool for MT5 that automatically calculates the optimal lot size for every trade based on your account balance, desired risk percentage, and stop loss distance. Never risk more than you intend again — this indicator makes precise risk management effortless.

DarkWolf MT5 AI Robot integrates concepts from this indicator into its automated trading engine. While this free tool helps manual traders analyze the market, our AI-powered robot executes trades automatically using similar logic across XAUUSD, EURUSD, GBPUSD, US30 and more — with a verified 78.4% win rate on gold.

Key Features

• Auto lot size calculation from risk % and stop distance
• Account balance auto-read from MT5
• Risk amount display in account currency
• Customizable default risk percentage
• Works with all forex pairs, gold, indices, and commodities
• One-click lot size copy to clipboard

How It Works

The indicator reads your current account balance and combines it with your configured risk percentage to calculate your maximum dollar risk per trade. When you set a stop loss on the chart (or enter a stop distance), it divides the risk amount by the pip value at that stop distance to determine the exact lot size. The result is displayed on-chart with risk amount, lot size, and pip value.

Best Trading Pairs & Instruments

Every single trader who wants to protect their capital. Especially valuable for prop firm traders with strict risk rules and beginners learning proper position sizing.

This indicator performs exceptionally well when combined with the DarkWolf MT5 EA, which uses similar logic to automatically trade these same instruments 24/5. Whether you prefer manual analysis or fully automated execution, the underlying market principles remain the same.

Recommended Timeframes

Any

For best results, match your timeframe to your trading style. Scalpers should use lower timeframes (M5-M15), while swing traders benefit from H1-H4 analysis. The DarkWolf MT5 EA automatically adjusts its analysis across multiple timeframes simultaneously.

Installation Guide

Install in MT5 Indicators folder. Set 'Default Risk %' to your standard risk per trade (typically 1-2%). The indicator auto-detects your account currency and adjusts calculations accordingly.

System Requirements:

• MetaTrader 5 build 4000 or later
• Windows 10/11 or Mac with Wine
• Min 4GB RAM recommended
• Stable internet connection for real-time data