diff --git a/Include/MyIncludes/HeikinAshiCalculator.mqh b/Include/MyIncludes/HeikinAshiCalculator.mqh
new file mode 100644
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+//+------------------------------------------------------------------+
+//|                                       HeikinAshiCalculator.mqh   |
+//|                  A toolkit for Heikin Ashi calculations          |
+//|                                        Copyright 2025, xxxxxxxx  |
+//+------------------------------------------------------------------+
+#property copyright "Copyright 2025, xxxxxxxx"
+#property link      ""
+
+//+------------------------------------------------------------------+
+//| Class CHeikinAshi_Calculator.                                    |
+//| Purpose: Encapsulates the logic for calculating Heikin Ashi      |
+//|          candle values from standard OHLC data. This class is    |
+//|          stateless and operates on external buffers.             |
+//+------------------------------------------------------------------+
+class CHeikinAshi_Calculator
+  {
+public:
+   //--- Public Interface
+   void              Calculate(const int rates_total,
+                               const double &open[],
+                               const double &high[],
+                               const double &low[],
+                               const double &close[],
+                               double &ha_open[],
+                               double &ha_high[],
+                               double &ha_low[],
+                               double &ha_close[]);
+  };
+
+//+------------------------------------------------------------------+
+//| Calculates Heikin Ashi values for the entire history.            |
+//| This method performs a full recalculation for maximum stability. |
+//| INPUT:  rates_total - The total number of bars available.        |
+//|         open[], high[], low[], close[] - Standard price arrays.  |
+//| OUTPUT: ha_open[], ha_high[], ha_low[], ha_close[] - Result arrays.|
+//+------------------------------------------------------------------+
+void CHeikinAshi_Calculator::Calculate(const int rates_total,
+                                       const double &open[],
+                                       const double &high[],
+                                       const double &low[],
+                                       const double &close[],
+                                       double &ha_open[],
+                                       double &ha_high[],
+                                       double &ha_low[],
+                                       double &ha_close[])
+  {
+//--- Not enough data for calculation
+   if(rates_total < 1)
+      return;
+
+//--- Calculate the very first Heikin Ashi bar (index 0)
+   ha_open[0]  = (open[0] + close[0]) / 2.0;
+   ha_close[0] = (open[0] + high[0] + low[0] + close[0]) / 4.0;
+// For the first bar, HA High/Low are the same as the regular High/Low
+   ha_high[0]  = high[0];
+   ha_low[0]   = low[0];
+
+//--- Main loop to calculate all subsequent Heikin Ashi bars
+   for(int i = 1; i < rates_total; i++)
+     {
+      // HA Open is the midpoint of the previous HA bar's body
+      ha_open[i]  = (ha_open[i - 1] + ha_close[i - 1]) / 2.0;
+      // HA Close is the average price of the current regular bar
+      ha_close[i] = (open[i] + high[i] + low[i] + close[i]) / 4.0;
+      // HA High is the maximum of the current regular High, HA Open, and HA Close
+      ha_high[i]  = MathMax(high[i], MathMax(ha_open[i], ha_close[i]));
+      // HA Low is the minimum of the current regular Low, HA Open, and HA Close
+      ha_low[i]   = MathMin(low[i], MathMin(ha_open[i], ha_close[i]));
+     }
+  }
+//+------------------------------------------------------------------+
+//+------------------------------------------------------------------+