Calculate Lot by Percent
Info
The Calculate Lot by Percent is a Library for MetaTrader 5 that module for lot calculation based on risk percentage. This module is designed to automate the calculation of trading position size (lot) to ensure that potential losses when a stop loss is triggered align with a predefined percentage of your deposit.
Usage
This tool is typically used for enhancing chart analysis and decision making.
Platform
This Library works exclusively on MetaTrader 5 (both build 600+ and newer versions).
Setup
Place the downloaded file in MQL5/Libraries folder via File ? Open Data Folder in MetaTrader 5.
How to Install and Use Calculate Lot by Percent
1. Storage: Place library files in the MQL/Libraries directory to ensure they are accessible to your projects.
2. Implementation: Include the library in your code using the #import directive, ensuring you match the exact function names and parameters.
3. Compilation: Ensure the library is present in the directory before you compile your main EA or script, as the compiler links them during this phase.
4. Management: Keep libraries organized in sub-folders if you manage many custom functions to maintain a clean project structure.
Frequently Asked Questions
Q: What is a library file used for? A: Libraries store reusable code modules, allowing you to centralize common logic used by multiple EAs or indicators.
Q: Is a library executable? A: No, libraries are non-executable files containing functions; they must be imported into an EA, indicator, or script to function.
Q: Can I update a library while the platform is running? A: You should compile your EA or script after updating a library to ensure the latest code changes are integrated.
What this tool does
Module for lot calculation based on risk percentage.
Typical Use Case
This Library excels in automated trading and technical analysis on MetaTrader 5.
Compatible Platform & Setup
This Library works on MetaTrader 5. Place the file in the MQL5/Libraries folder and restart the terminal.
Description & Settings
Related: Calculate Lot Size Based on Risk Percentage - another powerful library for MetaTrader 5 traders.
Module for lot calculation based on risk percentage.Also recommended: Maximum Percentage of Equity Risk - similar library with strong performance on MetaTrader 5.
This module is designed to automate the calculation of trading position size (lot) to ensure that potential losses when a stop loss is triggered align with a predefined percentage of your deposit. This approach is fundamental to effective money management.
Functionality:
By setting a risk percentage (e.g., 2%) and a stop loss price, the function determines the maximum trade size to limit potential losses to 2% of your account if the price hits the stop loss.
The function then converts this value into lots, considering the instrument's specifications at your broker.
Key Features:
- Intelligent Logic: Automatically applies the appropriate formula for various currency pairs like EURUSD and USDJPY.
- Comprehensive Checks: Monitors prices, minimum and maximum lots for accuracy.
- Ready-to-Use: A single function call provides the lot value for market orders.
Code Implementation Example:
This code snippet eliminates manual calculations, enabling consistent risk management in every trade. Integrate it into your Expert Advisor (EA) or script for seamless risk control.
You may also like: A class for working with free form buttons - excellent alternative for library users on MetaTrader 5.
⚠ Limitations & Risk Warning
- 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.