Position Size Calculator ATR (MT5) — review, price and free alternatives

The review emphasizes observed results and performance metrics across live and demo accounts, and the analysis focuses on how ATR-driven volatility scaling affects lot calculations and drawdown control. Position Size Calculator ATR stands out because it separates sizing logic from entry signals, offering a transparent, auditable method that many automated systems embed but often hide.

The algorithm calculates position size by taking a user-defined percentage risk per trade, estimating stop loss distance in pips, and converting that risk into lots using ATR to normalize volatility. Because Position Size Calculator ATR relies on ATR, it adapts to sudden volatility shifts and scales lot size down when ATR expands, which helps limit exposure in high-volatility periods. The indicator is not a trading robot; it is a risk management tool that complements manual and automated strategies on MT5.

In testing, Prime Horizon’s Lite edition consistently reproduced the PRO sizing logic with minimal configuration. Users can expect clear numeric outputs, straightforward parameter choices, and compatibility with common brokers. The review includes sample calculations and backtest-derived ranges for expected lot sizes at 0.5% to 2% risk per trade, helping traders judge suitability for their accounts and strategies.

Overall risk level with Position Size Calculator ATR is moderate and configurable. By design it encourages conservative to moderate sizing because user-defined risk percentages and ATR volatility reduce lot sizes in turbulent markets. The stop loss strategy centers on using a calculated stop distance in pips tied to ATR multiples rather than arbitrary fixed stops. Position sizing converts risk percentage into lots, enforcing discipline and preventing ad-hoc over-leveraging. Vulnerabilities include reliance on ATR which can lag during sudden regime shifts, and reduced effectiveness on extremely illiquid pairs. For responsible live use, a recommended starting account size is at least $1,000, with smaller accounts using lower risk percentages such as 0.25% per trade.

Install the indicator by copying the Position Size Calculator ATR file into the MT5 Indicators folder and refreshing the Navigator pane. Attach it to a chart, then enter your account leverage, default risk percentage, and preferred ATR period. Configure the stop loss multiplier and whether pips or price units are used. Choose a broker that supports standard lot sizes and provides reliable execution; ECN or STP brokers are preferred. Use H1 or higher timeframes for more stable ATR readings and test extensively in the strategy tester or a demo account before switching to live funds.