diff --git a/Marlin/src/HAL/DUE/watchdog.cpp b/Marlin/src/HAL/DUE/watchdog.cpp
index 0f46971830..e144db8291 100644
--- a/Marlin/src/HAL/DUE/watchdog.cpp
+++ b/Marlin/src/HAL/DUE/watchdog.cpp
@@ -36,7 +36,7 @@ void watchdogSetup() {
   #if ENABLED(USE_WATCHDOG)
 
     // 4 seconds timeout
-    uint32_t timeout = 4000;
+    uint32_t timeout = TERN(WATCHDOG_DURATION_8S, 8000, 4000);
 
     // Calculate timeout value in WDT counter ticks: This assumes
     // the slow clock is running at 32.768 kHz watchdog
diff --git a/Marlin/src/HAL/ESP32/watchdog.cpp b/Marlin/src/HAL/ESP32/watchdog.cpp
index f6fcfa3182..5ec03c4607 100644
--- a/Marlin/src/HAL/ESP32/watchdog.cpp
+++ b/Marlin/src/HAL/ESP32/watchdog.cpp
@@ -25,6 +25,8 @@
 
 #if ENABLED(USE_WATCHDOG)
 
+#define WDT_TIMEOUT_US TERN(WATCHDOG_DURATION_8S, 8000000, 4000000) // 4 or 8 second timeout
+
 #include "watchdog.h"
 
 void watchdogSetup() {
diff --git a/Marlin/src/HAL/LINUX/watchdog.cpp b/Marlin/src/HAL/LINUX/watchdog.cpp
index c15b0e311c..84202e48b6 100644
--- a/Marlin/src/HAL/LINUX/watchdog.cpp
+++ b/Marlin/src/HAL/LINUX/watchdog.cpp
@@ -27,6 +27,8 @@
 
 #include "watchdog.h"
 
+#define WDT_TIMEOUT_US TERN(WATCHDOG_DURATION_8S, 8000000, 4000000) // 4 or 8 second timeout
+
 void watchdog_init() {}
 void HAL_watchdog_refresh() {}
 
diff --git a/Marlin/src/HAL/LINUX/watchdog.h b/Marlin/src/HAL/LINUX/watchdog.h
index 472624cc78..49a0d9c631 100644
--- a/Marlin/src/HAL/LINUX/watchdog.h
+++ b/Marlin/src/HAL/LINUX/watchdog.h
@@ -21,7 +21,5 @@
  */
 #pragma once
 
-#define WDT_TIMEOUT   4000000 // 4 second timeout
-
 void watchdog_init();
 void HAL_watchdog_refresh();
diff --git a/Marlin/src/HAL/LPC1768/watchdog.cpp b/Marlin/src/HAL/LPC1768/watchdog.cpp
index 3cd22d6651..f23ccf5b51 100644
--- a/Marlin/src/HAL/LPC1768/watchdog.cpp
+++ b/Marlin/src/HAL/LPC1768/watchdog.cpp
@@ -28,6 +28,8 @@
 #include <lpc17xx_wdt.h>
 #include "watchdog.h"
 
+#define WDT_TIMEOUT_US TERN(WATCHDOG_DURATION_8S, 8000000, 4000000) // 4 or 8 second timeout
+
 void watchdog_init() {
   #if ENABLED(WATCHDOG_RESET_MANUAL)
     // We enable the watchdog timer, but only for the interrupt.
@@ -52,7 +54,7 @@ void watchdog_init() {
   #else
     WDT_Init(WDT_CLKSRC_IRC, WDT_MODE_RESET);
   #endif
-  WDT_Start(WDT_TIMEOUT);
+  WDT_Start(WDT_TIMEOUT_US);
 }
 
 void HAL_watchdog_refresh() {
diff --git a/Marlin/src/HAL/LPC1768/watchdog.h b/Marlin/src/HAL/LPC1768/watchdog.h
index cc170881f3..c843f0ed55 100644
--- a/Marlin/src/HAL/LPC1768/watchdog.h
+++ b/Marlin/src/HAL/LPC1768/watchdog.h
@@ -21,8 +21,6 @@
  */
 #pragma once
 
-#define WDT_TIMEOUT   4000000 // 4 second timeout
-
 void watchdog_init();
 void HAL_watchdog_refresh();
 
diff --git a/Marlin/src/HAL/SAMD51/watchdog.cpp b/Marlin/src/HAL/SAMD51/watchdog.cpp
index ebc8dffe13..9de451836a 100644
--- a/Marlin/src/HAL/SAMD51/watchdog.cpp
+++ b/Marlin/src/HAL/SAMD51/watchdog.cpp
@@ -24,28 +24,30 @@
 
 #if ENABLED(USE_WATCHDOG)
 
-  #include "watchdog.h"
+#include "watchdog.h"
 
-  void watchdog_init() {
-    // The low-power oscillator used by the WDT runs at 32,768 Hz with
-    // a 1:32 prescale, thus 1024 Hz, though probably not super precise.
+#define WDT_TIMEOUT_REG TERN(WATCHDOG_DURATION_8S, WDT_CONFIG_PER_CYC8192, WDT_CONFIG_PER_CYC4096) // 4 or 8 second timeout
 
-    // Setup WDT clocks
-    MCLK->APBAMASK.bit.OSC32KCTRL_ = true;
-    MCLK->APBAMASK.bit.WDT_ = true;
-    OSC32KCTRL->OSCULP32K.bit.EN1K = true;      // Enable out 1K (this is what WDT uses)
+void watchdog_init() {
+  // The low-power oscillator used by the WDT runs at 32,768 Hz with
+  // a 1:32 prescale, thus 1024 Hz, though probably not super precise.
 
-    WDT->CTRLA.bit.ENABLE = false;              // Disable watchdog for config
-    SYNC(WDT->SYNCBUSY.bit.ENABLE);
+  // Setup WDT clocks
+  MCLK->APBAMASK.bit.OSC32KCTRL_ = true;
+  MCLK->APBAMASK.bit.WDT_ = true;
+  OSC32KCTRL->OSCULP32K.bit.EN1K = true;      // Enable out 1K (this is what WDT uses)
 
-    WDT->INTENCLR.reg = WDT_INTENCLR_EW;        // Disable early warning interrupt
-    WDT->CONFIG.reg = WDT_CONFIG_PER_CYC4096;   // Set at least 4s period for chip reset
+  WDT->CTRLA.bit.ENABLE = false;              // Disable watchdog for config
+  SYNC(WDT->SYNCBUSY.bit.ENABLE);
 
-    HAL_watchdog_refresh();
+  WDT->INTENCLR.reg = WDT_INTENCLR_EW;        // Disable early warning interrupt
+  WDT->CONFIG.reg = WDT_TIMEOUT_REG;          // Set a 4s or 8s period for chip reset
 
-    WDT->CTRLA.reg = WDT_CTRLA_ENABLE;          // Start watchdog now in normal mode
-    SYNC(WDT->SYNCBUSY.bit.ENABLE);
-  }
+  HAL_watchdog_refresh();
+
+  WDT->CTRLA.reg = WDT_CTRLA_ENABLE;          // Start watchdog now in normal mode
+  SYNC(WDT->SYNCBUSY.bit.ENABLE);
+}
 
 #endif // USE_WATCHDOG
 
diff --git a/Marlin/src/HAL/STM32/watchdog.cpp b/Marlin/src/HAL/STM32/watchdog.cpp
index cc18553149..3d83408311 100644
--- a/Marlin/src/HAL/STM32/watchdog.cpp
+++ b/Marlin/src/HAL/STM32/watchdog.cpp
@@ -25,23 +25,26 @@
 
 #if ENABLED(USE_WATCHDOG)
 
-  #include "../../inc/MarlinConfig.h"
+#define WDT_TIMEOUT_US TERN(WATCHDOG_DURATION_8S, 8000000, 4000000) // 4 or 8 second timeout
 
-  #include "watchdog.h"
-  #include <IWatchdog.h>
+#include "../../inc/MarlinConfig.h"
 
-  void watchdog_init() {
-    #if DISABLED(DISABLE_WATCHDOG_INIT)
-      IWatchdog.begin(4000000); // 4 sec timeout
-    #endif
-  }
+#include "watchdog.h"
+#include <IWatchdog.h>
 
-  void HAL_watchdog_refresh() {
-    IWatchdog.reload();
-    #if DISABLED(PINS_DEBUGGING) && PIN_EXISTS(LED)
-      TOGGLE(LED_PIN);  // heartbeat indicator
-    #endif
-  }
+void watchdog_init() {
+  #if DISABLED(DISABLE_WATCHDOG_INIT)
+    IWatchdog.begin(WDT_TIMEOUT_US);
+  #endif
+}
+
+void HAL_watchdog_refresh() {
+  IWatchdog.reload();
+  #if DISABLED(PINS_DEBUGGING) && PIN_EXISTS(LED)
+    TOGGLE(LED_PIN);  // heartbeat indicator
+  #endif
+}
 
 #endif // USE_WATCHDOG
+
 #endif // ARDUINO_ARCH_STM32 && !STM32GENERIC
diff --git a/Marlin/src/HAL/STM32F1/watchdog.cpp b/Marlin/src/HAL/STM32F1/watchdog.cpp
index ca91a6fe43..d37fe7dfc7 100644
--- a/Marlin/src/HAL/STM32F1/watchdog.cpp
+++ b/Marlin/src/HAL/STM32F1/watchdog.cpp
@@ -33,6 +33,13 @@
 #include <libmaple/iwdg.h>
 #include "watchdog.h"
 
+/**
+ *  The watchdog clock is 40Khz. We need a 4 seconds interval, so use a /256 preescaler and
+ *  625 reload value (counts down to 0)
+ *  use 1250 for 8 seconds
+ */
+#define STM32F1_WD_RELOAD TERN(WATCHDOG_DURATION_8S, 1250, 625) // 4 or 8 second timeout
+
 void HAL_watchdog_refresh() {
   #if DISABLED(PINS_DEBUGGING) && PIN_EXISTS(LED)
     TOGGLE(LED_PIN);  // heartbeat indicator
diff --git a/Marlin/src/HAL/STM32F1/watchdog.h b/Marlin/src/HAL/STM32F1/watchdog.h
index 7185d69775..72513d476c 100644
--- a/Marlin/src/HAL/STM32F1/watchdog.h
+++ b/Marlin/src/HAL/STM32F1/watchdog.h
@@ -27,13 +27,6 @@
 
 #include <libmaple/iwdg.h>
 
-/**
- *  The watchdog clock is 40Khz. We need a 4 seconds interval, so use a /256 preescaler and
- *  625 reload value (counts down to 0)
- *  use 1250 for 8 seconds
- */
-#define STM32F1_WD_RELOAD 625
-
 // Arduino STM32F1 core now has watchdog support
 
 // Initialize watchdog with a 4 second countdown time
diff --git a/Marlin/src/HAL/STM32_F4_F7/watchdog.cpp b/Marlin/src/HAL/STM32_F4_F7/watchdog.cpp
index cb12ec7aac..c0afd0cd58 100644
--- a/Marlin/src/HAL/STM32_F4_F7/watchdog.cpp
+++ b/Marlin/src/HAL/STM32_F4_F7/watchdog.cpp
@@ -25,31 +25,33 @@
 
 #if ENABLED(USE_WATCHDOG)
 
-  #include "watchdog.h"
-
-  IWDG_HandleTypeDef hiwdg;
-
-  void watchdog_init() {
-    hiwdg.Instance = IWDG;
-    hiwdg.Init.Prescaler = IWDG_PRESCALER_32; //32kHz LSI clock and 32x prescalar = 1024Hz IWDG clock
-    hiwdg.Init.Reload = 4095;           //4095 counts = 4 seconds at 1024Hz
-    if (HAL_IWDG_Init(&hiwdg) != HAL_OK) {
-      //Error_Handler();
-    }
-    else {
-      #if PIN_EXISTS(LED) && DISABLED(PINS_DEBUGGING)
-        TOGGLE(LED_PIN);  // heartbeat indicator
-      #endif
-    }
+#include "watchdog.h"
+
+#define WDT_TIMEOUT_COUNT TERN(WATCHDOG_DURATION_8S, 8192, 4096) // 4 or 8 second timeout
+
+IWDG_HandleTypeDef hiwdg;
+
+void watchdog_init() {
+  hiwdg.Instance = IWDG;
+  hiwdg.Init.Prescaler = IWDG_PRESCALER_32; // 32kHz LSI clock and 32x prescalar = 1024Hz IWDG clock
+  hiwdg.Init.Reload = WDT_TIMEOUT_COUNT - 1;
+  if (HAL_IWDG_Init(&hiwdg) != HAL_OK) {
+    //Error_Handler();
+  }
+  else {
+    #if PIN_EXISTS(LED) && DISABLED(PINS_DEBUGGING)
+      TOGGLE(LED_PIN);  // heartbeat indicator
+    #endif
   }
+}
 
-  void HAL_watchdog_refresh() {
-    /* Refresh IWDG: reload counter */
-    if (HAL_IWDG_Refresh(&hiwdg) != HAL_OK) {
-      /* Refresh Error */
-      //Error_Handler();
-    }
+void HAL_watchdog_refresh() {
+  /* Refresh IWDG: reload counter */
+  if (HAL_IWDG_Refresh(&hiwdg) != HAL_OK) {
+    /* Refresh Error */
+    //Error_Handler();
   }
+}
 
 #endif // USE_WATCHDOG
 #endif // STM32GENERIC && (STM32F4 || STM32F7)
diff --git a/Marlin/src/HAL/TEENSY31_32/watchdog.cpp b/Marlin/src/HAL/TEENSY31_32/watchdog.cpp
index 9f7b70d9f9..5e21236129 100644
--- a/Marlin/src/HAL/TEENSY31_32/watchdog.cpp
+++ b/Marlin/src/HAL/TEENSY31_32/watchdog.cpp
@@ -27,9 +27,11 @@
 
 #include "watchdog.h"
 
+#define WDT_TIMEOUT_MS TERN(WATCHDOG_DURATION_8S, 8000, 4000) // 4 or 8 second timeout
+
 void watchdog_init() {
   WDOG_TOVALH = 0;
-  WDOG_TOVALL = 4000;
+  WDOG_TOVALL = WDT_TIMEOUT_MS;
   WDOG_STCTRLH = WDOG_STCTRLH_WDOGEN;
 }
 
diff --git a/Marlin/src/HAL/TEENSY35_36/watchdog.cpp b/Marlin/src/HAL/TEENSY35_36/watchdog.cpp
index e735ee7923..3825e27928 100644
--- a/Marlin/src/HAL/TEENSY35_36/watchdog.cpp
+++ b/Marlin/src/HAL/TEENSY35_36/watchdog.cpp
@@ -27,9 +27,11 @@
 
 #include "watchdog.h"
 
+#define WDT_TIMEOUT_MS TERN(WATCHDOG_DURATION_8S, 8000, 4000) // 4 or 8 second timeout
+
 void watchdog_init() {
   WDOG_TOVALH = 0;
-  WDOG_TOVALL = 4000;
+  WDOG_TOVALL = WDT_TIMEOUT_MS;
   WDOG_STCTRLH = WDOG_STCTRLH_WDOGEN;
 }
 
diff --git a/Marlin/src/HAL/TEENSY40_41/watchdog.cpp b/Marlin/src/HAL/TEENSY40_41/watchdog.cpp
index 8b05ddb153..dd7c0aa92f 100644
--- a/Marlin/src/HAL/TEENSY40_41/watchdog.cpp
+++ b/Marlin/src/HAL/TEENSY40_41/watchdog.cpp
@@ -19,31 +19,27 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
+#ifdef __IMXRT1062__
 
 /**
  * HAL Watchdog for Teensy 4.0 (IMXRT1062DVL6A) / 4.1 (IMXRT1062DVJ6A)
  */
 
-#ifdef __IMXRT1062__
-
 #include "../../inc/MarlinConfig.h"
 
 #if ENABLED(USE_WATCHDOG)
 
 #include "watchdog.h"
 
-// 4 seconds timeout
-#define WDTO 4 //seconds
+#define WDT_TIMEOUT TERN(WATCHDOG_DURATION_8S, 8, 4) // 4 or 8 second timeout
 
-uint8_t timeoutval = (WDTO - 0.5f) / 0.5f;
+constexpr uint8_t timeoutval = (WDT_TIMEOUT - 0.5f) / 0.5f;
 
 void watchdog_init() {
-
   CCM_CCGR3 |= CCM_CCGR3_WDOG1(3);  // enable WDOG1 clocks
   WDOG1_WMCR = 0;                   // disable power down PDE
   WDOG1_WCR |= WDOG_WCR_SRS | WDOG_WCR_WT(timeoutval);
   WDOG1_WCR |= WDOG_WCR_WDE | WDOG_WCR_WDT | WDOG_WCR_SRE;
-
 }
 
 void HAL_watchdog_refresh() {