PropLotCalculator

PropLotCalculatorEA is a smart position-sizing tool for MetaTrader 5 designed for traders who need fast, accurate risk control directly from the chart.

By simply dragging your Entry, Stop Loss, and Take Profit lines, the EA calculates the optimal lot size based on a fixed USD risk amount, while also displaying the trade’s risk-to-reward ratio in real time. It automatically adapts to the active instrument’s contract specifications, volume step, tick value, and leverage profile, helping you size positions correctly across assets such as indices, metals, forex, and other CFD instruments.

Its main strength is practicality: instead of manually calculating lot size, margin impact, and setup quality before every trade, the tool gives you the essential numbers instantly in a clean on-chart panel. This makes execution faster, reduces sizing mistakes, and improves consistency, especially for traders operating under prop-firm rules where discipline in risk and exposure is critical.

Key advantages:

• Real-time lot size calculation from chart-drawn Entry, SL, and TP
• Fixed USD risk model for consistent trade management
• Live RRR display for quick setup evaluation
• Instrument-aware sizing adapted to symbol specifications
• Prop-firm-oriented leverage and margin logic
• Clean visual workflow that speeds up decision-making and reduces manual error

PropLotCalculatorEA is built for traders who want simple execution, precise sizing, and consistent risk management without breaking flow during live analysis.