diff --git a/Marlin/src/HAL/AVR/timers.h b/Marlin/src/HAL/AVR/timers.h
index 892e0e493b..46993ead33 100644
--- a/Marlin/src/HAL/AVR/timers.h
+++ b/Marlin/src/HAL/AVR/timers.h
@@ -28,7 +28,7 @@
 // ------------------------
 
 typedef uint16_t hal_timer_t;
-#define HAL_TIMER_TYPE_MAX 0xFFFFU
+#define HAL_TIMER_TYPE_MAX hal_timer_t(UINT16_MAX)
 
 // ------------------------
 // Defines
diff --git a/Marlin/src/HAL/DUE/timers.h b/Marlin/src/HAL/DUE/timers.h
index c63e051ef3..6d02033ed5 100644
--- a/Marlin/src/HAL/DUE/timers.h
+++ b/Marlin/src/HAL/DUE/timers.h
@@ -34,7 +34,7 @@
 #define FORCE_INLINE __attribute__((always_inline)) inline
 
 typedef uint32_t hal_timer_t;
-#define HAL_TIMER_TYPE_MAX 0xFFFFFFFFUL
+#define HAL_TIMER_TYPE_MAX hal_timer_t(UINT32_MAX)
 
 #define HAL_TIMER_PRESCALER    2
 #define HAL_TIMER_RATE         ((F_CPU) / (HAL_TIMER_PRESCALER))  // frequency of timers peripherals
diff --git a/Marlin/src/HAL/ESP32/timers.h b/Marlin/src/HAL/ESP32/timers.h
index 4e5f92d671..2ba034d9b6 100644
--- a/Marlin/src/HAL/ESP32/timers.h
+++ b/Marlin/src/HAL/ESP32/timers.h
@@ -30,7 +30,7 @@
 #define FORCE_INLINE __attribute__((always_inline)) inline
 
 typedef uint64_t hal_timer_t;
-#define HAL_TIMER_TYPE_MAX 0xFFFF'FFFF'FFFF'FFFFULL
+#define HAL_TIMER_TYPE_MAX hal_timer_t(UINT64_MAX)
 
 #ifndef MF_TIMER_STEP
   #define MF_TIMER_STEP         0  // Timer Index for Stepper
diff --git a/Marlin/src/HAL/GD32_MFL/timers.h b/Marlin/src/HAL/GD32_MFL/timers.h
index d45e3d1767..00a757d4e0 100644
--- a/Marlin/src/HAL/GD32_MFL/timers.h
+++ b/Marlin/src/HAL/GD32_MFL/timers.h
@@ -34,8 +34,8 @@
 #define MF_TIMER_TEMP     1
 #define MF_TIMER_PULSE    MF_TIMER_STEP
 
-#define hal_timer_t         uint32_t
-#define HAL_TIMER_TYPE_MAX  UINT16_MAX
+typedef uint32_t hal_timer_t;
+#define HAL_TIMER_TYPE_MAX hal_timer_t(UINT16_MAX)
 
 extern uint32_t GetStepperTimerClkFreq();
 
diff --git a/Marlin/src/HAL/HC32/timers.h b/Marlin/src/HAL/HC32/timers.h
index 9b898101dc..9992033e0e 100644
--- a/Marlin/src/HAL/HC32/timers.h
+++ b/Marlin/src/HAL/HC32/timers.h
@@ -27,7 +27,7 @@
 //
 typedef Timer0 *timer_channel_t;
 typedef uint16_t hal_timer_t;
-#define HAL_TIMER_TYPE_MAX 0xFFFFU
+#define HAL_TIMER_TYPE_MAX hal_timer_t(UINT16_MAX)
 
 //
 // Timer instances
diff --git a/Marlin/src/HAL/LINUX/timers.h b/Marlin/src/HAL/LINUX/timers.h
index cbca970bb2..ea64f1517d 100644
--- a/Marlin/src/HAL/LINUX/timers.h
+++ b/Marlin/src/HAL/LINUX/timers.h
@@ -34,7 +34,7 @@
 #define FORCE_INLINE __attribute__((always_inline)) inline
 
 typedef uint32_t hal_timer_t;
-#define HAL_TIMER_TYPE_MAX 0xFFFFFFFFUL
+#define HAL_TIMER_TYPE_MAX hal_timer_t(UINT32_MAX)
 
 #define HAL_TIMER_RATE         ((SystemCoreClock) / 4)  // frequency of timers peripherals
 
diff --git a/Marlin/src/HAL/LPC1768/timers.h b/Marlin/src/HAL/LPC1768/timers.h
index e29aa273a1..6e158f9290 100644
--- a/Marlin/src/HAL/LPC1768/timers.h
+++ b/Marlin/src/HAL/LPC1768/timers.h
@@ -57,7 +57,7 @@
 #define _HAL_TIMER_ISR(T)  __HAL_TIMER_ISR(T)
 
 typedef uint32_t hal_timer_t;
-#define HAL_TIMER_TYPE_MAX 0xFFFFFFFFUL
+#define HAL_TIMER_TYPE_MAX hal_timer_t(UINT32_MAX)
 
 #define HAL_TIMER_RATE         ((F_CPU) / 4)  // (Hz) Frequency of timers peripherals
 
diff --git a/Marlin/src/HAL/NATIVE_SIM/timers.h b/Marlin/src/HAL/NATIVE_SIM/timers.h
index 6609774d12..af3e5ff992 100644
--- a/Marlin/src/HAL/NATIVE_SIM/timers.h
+++ b/Marlin/src/HAL/NATIVE_SIM/timers.h
@@ -34,7 +34,7 @@
 #define FORCE_INLINE __attribute__((always_inline)) inline
 
 typedef uint64_t hal_timer_t;
-#define HAL_TIMER_TYPE_MAX 0xFFFF'FFFF'FFFF'FFFFULL
+#define HAL_TIMER_TYPE_MAX hal_timer_t(UINT64_MAX)
 
 #define HAL_TIMER_RATE         ((SystemCoreClock) / 4)  // frequency of timers peripherals
 
diff --git a/Marlin/src/HAL/RP2040/timers.h b/Marlin/src/HAL/RP2040/timers.h
index 06deb152f7..fd078ae4a9 100644
--- a/Marlin/src/HAL/RP2040/timers.h
+++ b/Marlin/src/HAL/RP2040/timers.h
@@ -41,7 +41,7 @@
 #define _HAL_TIMER_ISR(T)  __HAL_TIMER_ISR(T)
 
 typedef uint64_t hal_timer_t;
-#define HAL_TIMER_TYPE_MAX 0xFFFF'FFFF'FFFF'FFFFULL
+#define HAL_TIMER_TYPE_MAX hal_timer_t(UINT64_MAX)
 
 #define HAL_TIMER_RATE         (1'000'000ULL)  // fixed value as we use a microsecond timesource
 #ifndef MF_TIMER_STEP
diff --git a/Marlin/src/HAL/SAMD21/timers.h b/Marlin/src/HAL/SAMD21/timers.h
index b3c53e7416..55034459c3 100644
--- a/Marlin/src/HAL/SAMD21/timers.h
+++ b/Marlin/src/HAL/SAMD21/timers.h
@@ -33,7 +33,7 @@
 // --------------------------------------------------------------------------
 
 typedef uint32_t hal_timer_t;
-#define HAL_TIMER_TYPE_MAX 0xFFFFFFFFUL
+#define HAL_TIMER_TYPE_MAX hal_timer_t(UINT32_MAX)
 
 #define HAL_TIMER_RATE      F_CPU   // frequency of timers peripherals
 
diff --git a/Marlin/src/HAL/SAMD51/timers.h b/Marlin/src/HAL/SAMD51/timers.h
index d39ac0254a..b69c131406 100644
--- a/Marlin/src/HAL/SAMD51/timers.h
+++ b/Marlin/src/HAL/SAMD51/timers.h
@@ -32,7 +32,7 @@
 // --------------------------------------------------------------------------
 
 typedef uint32_t hal_timer_t;
-#define HAL_TIMER_TYPE_MAX 0xFFFFFFFFUL
+#define HAL_TIMER_TYPE_MAX hal_timer_t(UINT32_MAX)
 
 #define HAL_TIMER_RATE      F_CPU   // frequency of timers peripherals
 
diff --git a/Marlin/src/HAL/STM32F1/timers.h b/Marlin/src/HAL/STM32F1/timers.h
index 10ee2e4f9e..2aee309c38 100644
--- a/Marlin/src/HAL/STM32F1/timers.h
+++ b/Marlin/src/HAL/STM32F1/timers.h
@@ -40,7 +40,7 @@
  */
 
 typedef uint16_t hal_timer_t;
-#define HAL_TIMER_TYPE_MAX 0xFFFFU
+#define HAL_TIMER_TYPE_MAX hal_timer_t(UINT16_MAX)
 
 #define HAL_TIMER_RATE uint32_t(F_CPU)  // frequency of timers peripherals
 
diff --git a/Marlin/src/HAL/TEENSY31_32/timers.h b/Marlin/src/HAL/TEENSY31_32/timers.h
index 7de8cccde4..c22ffc21f9 100644
--- a/Marlin/src/HAL/TEENSY31_32/timers.h
+++ b/Marlin/src/HAL/TEENSY31_32/timers.h
@@ -34,7 +34,7 @@
 #define FORCE_INLINE __attribute__((always_inline)) inline
 
 typedef uint32_t hal_timer_t;
-#define HAL_TIMER_TYPE_MAX 0xFFFFFFFFUL
+#define HAL_TIMER_TYPE_MAX hal_timer_t(UINT32_MAX)
 
 #define FTM0_TIMER_PRESCALE 8
 #define FTM1_TIMER_PRESCALE 4
diff --git a/Marlin/src/HAL/TEENSY35_36/timers.h b/Marlin/src/HAL/TEENSY35_36/timers.h
index 60b35faa38..9c55af6228 100644
--- a/Marlin/src/HAL/TEENSY35_36/timers.h
+++ b/Marlin/src/HAL/TEENSY35_36/timers.h
@@ -34,7 +34,7 @@
 #define FORCE_INLINE __attribute__((always_inline)) inline
 
 typedef uint32_t hal_timer_t;
-#define HAL_TIMER_TYPE_MAX 0xFFFFFFFFUL
+#define HAL_TIMER_TYPE_MAX hal_timer_t(UINT32_MAX)
 
 #define FTM0_TIMER_PRESCALE 8
 #define FTM1_TIMER_PRESCALE 4
diff --git a/Marlin/src/HAL/TEENSY40_41/timers.h b/Marlin/src/HAL/TEENSY40_41/timers.h
index 49b5c32836..14a9587486 100644
--- a/Marlin/src/HAL/TEENSY40_41/timers.h
+++ b/Marlin/src/HAL/TEENSY40_41/timers.h
@@ -34,7 +34,7 @@
 #define FORCE_INLINE __attribute__((always_inline)) inline
 
 typedef uint32_t hal_timer_t;
-#define HAL_TIMER_TYPE_MAX 0xFFFFFFFEUL
+#define HAL_TIMER_TYPE_MAX hal_timer_t(UINT32_MAX-1UL)
 
 #define GPT_TIMER_RATE (F_CPU / 4) // 150MHz (Can't use F_BUS_ACTUAL because it's extern volatile)
 
diff --git a/Marlin/src/MarlinCore.cpp b/Marlin/src/MarlinCore.cpp
index 5b44b5c7b9..6610e90ab7 100644
--- a/Marlin/src/MarlinCore.cpp
+++ b/Marlin/src/MarlinCore.cpp
@@ -724,7 +724,7 @@ void Marlin::manage_inactivity(const bool no_stepper_sleep/*=false*/) {
     // handle delayed move timeout
     if (delayed_move_time && ELAPSED(ms, delayed_move_time) && isRunning()) {
       // travel moves have been received so enact them
-      delayed_move_time = 0xFFFFFFFFUL; // force moves to be done
+      delayed_move_time = UINT32_MAX; // force moves to be done
       destination = current_position;
       prepare_line_to_destination();
       planner.synchronize();
diff --git a/Marlin/src/module/ft_motion/stepping.h b/Marlin/src/module/ft_motion/stepping.h
index cacdd5d69a..9274cbf369 100644
--- a/Marlin/src/module/ft_motion/stepping.h
+++ b/Marlin/src/module/ft_motion/stepping.h
@@ -26,12 +26,11 @@
 //
 // uint64-free equivalent of: ((uint64_t)a * b) >> 16
 //
-FORCE_INLINE constexpr uint32_t a_times_b_shift_16(uint32_t a, uint32_t b) {
-  uint32_t hi = a >> 16;
-  uint32_t lo = a & 0xFFFFu;
+FORCE_INLINE constexpr uint32_t a_times_b_shift_16(const uint32_t a, const uint32_t b) {
+  const uint32_t hi = a >> 16, lo = a & 0x0000FFFF;
   return (hi * b) + ((lo * b) >> 16);
 }
-#define FTM_NEVER (UINT16_MAX)                                       // Reserved number to indicate "no ticks in this frame" (FRAME_TICKS_FP+1 would work too)
+#define FTM_NEVER uint32_t(UINT16_MAX)                               // Reserved number to indicate "no ticks in this frame" (FRAME_TICKS_FP+1 would work too)
 constexpr uint32_t FRAME_TICKS = STEPPER_TIMER_RATE / FTM_FS;        // Timer ticks in a frame
 static_assert(FRAME_TICKS < FTM_NEVER, "(STEPPER_TIMER_RATE / FTM_FS) must be < 2^16 (otherwise fixed-point numbers exceed uint16 vars).");
 constexpr uint32_t FTM_Q_INT = 32u - __builtin_clz(FRAME_TICKS + 1); // Bits to represent the max value (duration of a frame, +1 one for FTM_NEVER).
diff --git a/Marlin/src/module/motion.cpp b/Marlin/src/module/motion.cpp
index 37d9188863..1012cc4150 100644
--- a/Marlin/src/module/motion.cpp
+++ b/Marlin/src/module/motion.cpp
@@ -1827,7 +1827,7 @@ float get_move_distance(const xyze_pos_t &diff OPTARG(HAS_ROTATIONAL_AXES, bool
             // This is a travel move (with no extrusion)
             // Skip it, but keep track of the current position
             // (so it can be used as the start of the next non-travel move)
-            if (delayed_move_time != 0xFFFFFFFFUL) {
+            if (delayed_move_time != UINT32_MAX) {
               current_position = destination;
               NOLESS(raised_parked_position.z, destination.z);
               delayed_move_time = millis() + 1000UL;
diff --git a/Marlin/src/module/planner.cpp b/Marlin/src/module/planner.cpp
index 6bee1890e3..62db79a907 100644
--- a/Marlin/src/module/planner.cpp
+++ b/Marlin/src/module/planner.cpp
@@ -3188,7 +3188,7 @@ void Planner::refresh_acceleration_rates() {
     if (TERN1(DISTINCT_E_FACTORS, i < E_AXIS || i == E_AXIS_N(active_extruder)))
       NOLESS(highest_rate, max_acceleration_steps_per_s2[i]);
   }
-  acceleration_long_cutoff = 4294967295UL / highest_rate; // 0xFFFFFFFFUL
+  acceleration_long_cutoff = UINT32_MAX / highest_rate;
   TERN_(HAS_LINEAR_E_JERK, recalculate_max_e_jerk());
 }
 
diff --git a/Marlin/src/module/stepper.cpp b/Marlin/src/module/stepper.cpp
index 060d51c0cc..d79a5edcc0 100644
--- a/Marlin/src/module/stepper.cpp
+++ b/Marlin/src/module/stepper.cpp
@@ -1573,7 +1573,7 @@ void Stepper::isr() {
   // Program timer compare for the maximum period, so it does NOT
   // flag an interrupt while this ISR is running - So changes from small
   // periods to big periods are respected and the timer does not reset to 0
-  HAL_timer_set_compare(MF_TIMER_STEP, hal_timer_t(HAL_TIMER_TYPE_MAX));
+  HAL_timer_set_compare(MF_TIMER_STEP, HAL_TIMER_TYPE_MAX);
 
   // Count of ticks for the next ISR
   hal_timer_t next_isr_ticks = 0;