diff --git a/include/interfaces/iDistance.hpp b/include/interfaces/iDistance.hpp
index e5ba74bc..0d6f0a6d 100644
--- a/include/interfaces/iDistance.hpp
+++ b/include/interfaces/iDistance.hpp
@@ -24,15 +24,47 @@
 
 #pragma once
 
+#include <stdexcept>
+
 namespace upm
 {
+  enum class DistanceUnit { CM, INCH };
 /**
 * @brief Interface for Distance Measuring Sensors
 */
-    class iDistance
+  class iDistance
+  {
+  public:
+    virtual ~iDistance() {}
+    virtual int getDistance() = 0;
+    /**
+      * Convert distance value from Cm(default) to one
+      * of the following:
+      *
+      * 1. Inch
+      *
+      * @param celsiusValue Celsius degrees value
+      * @param unit The temperature unit for the conversion.
+      * @return The converted temperature value
+      */
+    static float convertCmTo(float cmValue, DistanceUnit unit);
+  };
+
+  float iDistance::convertCmTo(float cmValue, DistanceUnit unit)
+  {
+    float convertedValue = cmValue;
+
+    switch (unit)
     {
-    public:
-        virtual ~iDistance() {}
-        virtual int getDistance() = 0;
-    };
+      case DistanceUnit::CM:
+        break;
+      case DistanceUnit::INCH:
+        convertedValue *= 0.3937f;
+        break;
+      default:
+        throw std::invalid_argument("invalid distance unit");
+    }
+
+    return convertedValue;
+  }
 }
\ No newline at end of file
diff --git a/include/interfaces/iPressure.hpp b/include/interfaces/iPressure.hpp
index 19ce3213..9e7f03e7 100644
--- a/include/interfaces/iPressure.hpp
+++ b/include/interfaces/iPressure.hpp
@@ -24,8 +24,11 @@
 
 #pragma once
 
+#include <stdexcept>
+
 namespace upm
 {
+  enum class PressureUnit { PA, BAR, ATM, TORR, PSI };
 /**
 * @brief Interface for Pressure Measuring Sensors
 */
@@ -34,5 +37,47 @@ namespace upm
   public:
     virtual ~iPressure() {}
     virtual float getPressure() = 0;
+
+    /**
+     * Convert pressure value from Pascal(default) to one
+     * of the following:
+     *
+     * 1. Bar
+     * 2. Standard atmosphere
+     * 3. Torr
+     * 4. Pounds per square inch
+     *
+     * @param celsiusValue Celsius degrees value
+     * @param unit The temperature unit for the conversion.
+     * @return The converted temperature value
+     */
+    static float convertPaTo(float paValue, PressureUnit unit);
   };
-}
\ No newline at end of file
+
+  float iPressure::convertPaTo(float paValue, PressureUnit unit)
+  {
+    float convertedValue = paValue;
+
+    switch (unit)
+    {
+      case PressureUnit::PA:
+        break;
+      case PressureUnit::BAR:
+        convertedValue *= 0.00001f;
+        break;
+      case PressureUnit::ATM:
+        convertedValue *= 0.0000098692f;
+        break;
+      case PressureUnit::TORR:
+        convertedValue *= 0.0075006f;
+        break;
+      case PressureUnit::PSI:
+        convertedValue *= 0.0001450377f;
+        break;
+      default:
+        throw std::invalid_argument("invalid pressure unit");
+    }
+
+    return convertedValue;
+  }
+}
diff --git a/include/interfaces/iTemperature.hpp b/include/interfaces/iTemperature.hpp
index bf4ce0eb..d4d246e4 100644
--- a/include/interfaces/iTemperature.hpp
+++ b/include/interfaces/iTemperature.hpp
@@ -24,15 +24,54 @@
 
 #pragma once
 
+#include <stdexcept>
+
 namespace upm
 {
+  enum class TemperatureUnit { FAHRENHEIT, KELVIN, CELSIUS };
+
 /**
 * @brief Interface for Temperature Measuring Sensors
 */
   class iTemperature
   {
   public:
+
     virtual ~iTemperature() {}
     virtual float getTemperature() = 0;
+
+    /**
+     * Convert temperature value from Celsius(default) to one
+     * of the following:
+     *
+     * 1. Fahrenheit
+     * 2. Kelvin
+     *
+     * @param celsiusValue Celsius degrees value
+     * @param unit The temperature unit for the conversion.
+     * @return The converted temperature value
+     */
+    static float convertCelsiusTo(float celsiusValue, TemperatureUnit unit);
   };
-}
\ No newline at end of file
+
+  float iTemperature::convertCelsiusTo(float celsiusValue, TemperatureUnit unit)
+  {
+    float convertedValue = celsiusValue;
+
+    switch (unit)
+    {
+      case TemperatureUnit::CELSIUS:
+        break;
+      case TemperatureUnit::FAHRENHEIT:
+        convertedValue = celsiusValue * 1.8f + 32;
+        break;
+      case TemperatureUnit::KELVIN:
+        convertedValue += 273.15f;
+        break;
+      default:
+        throw std::invalid_argument("invalid temperature unit");
+    }
+
+    return convertedValue;
+  }
+}