diff --git a/Marlin/pinsDebug.h b/Marlin/pinsDebug.h
index a3886122b2..24d058b4f2 100644
--- a/Marlin/pinsDebug.h
+++ b/Marlin/pinsDebug.h
@@ -26,12 +26,13 @@ bool endstop_monitor_flag = false;
                                // "-" left justify, "28" minimum width of name, pad with blanks
 
 #if AVR_ATmega1284_FAMILY
-  #define IS_ANALOG(P) ((P) >= analogInputToDigitalPin(7) && (P) <= analogInputToDigitalPin(0)) 
-#else  
+  #define DIGITAL_PIN_TO_ANALOG_PIN(P) int(analogInputToDigitalPin(0) - (P))
+  #define IS_ANALOG(P) ((P) >= analogInputToDigitalPin(7) && (P) <= analogInputToDigitalPin(0))
+#else
+  #define DIGITAL_PIN_TO_ANALOG_PIN(P) int((P) - analogInputToDigitalPin(0))
   #define IS_ANALOG(P) ((P) >= analogInputToDigitalPin(0) && ((P) <= analogInputToDigitalPin(15) || (P) <= analogInputToDigitalPin(7)))
 #endif
 
-
 /**
  *  This routine minimizes RAM usage by creating a FLASH resident array to
  *  store the pin names, pin numbers and analog/digital flag.