diff --git a/esphome/components/ld2410/ld2410.cpp b/esphome/components/ld2410/ld2410.cpp
index dd1d53857d..e3b948e4c3 100644
--- a/esphome/components/ld2410/ld2410.cpp
+++ b/esphome/components/ld2410/ld2410.cpp
@@ -173,8 +173,6 @@ static constexpr uint8_t DATA_FRAME_FOOTER[HEADER_FOOTER_SIZE] = {0xF8, 0xF7, 0x
 // MAC address the module uses when Bluetooth is disabled
 static constexpr uint8_t NO_MAC[] = {0x08, 0x05, 0x04, 0x03, 0x02, 0x01};
 
-static inline int two_byte_to_int(char firstbyte, char secondbyte) { return (int16_t) (secondbyte << 8) + firstbyte; }
-
 static inline bool validate_header_footer(const uint8_t *header_footer, const uint8_t *buffer) {
   return std::memcmp(header_footer, buffer, HEADER_FOOTER_SIZE) == 0;
 }
@@ -363,15 +361,15 @@ void LD2410Component::handle_periodic_data_() {
 #ifdef USE_SENSOR
   SAFE_PUBLISH_SENSOR(
       this->moving_target_distance_sensor_,
-      ld2410::two_byte_to_int(this->buffer_data_[MOVING_TARGET_LOW], this->buffer_data_[MOVING_TARGET_HIGH]))
+      ld24xx::two_byte_to_uint16(this->buffer_data_[MOVING_TARGET_LOW], this->buffer_data_[MOVING_TARGET_HIGH]))
   SAFE_PUBLISH_SENSOR(this->moving_target_energy_sensor_, this->buffer_data_[MOVING_ENERGY])
   SAFE_PUBLISH_SENSOR(
       this->still_target_distance_sensor_,
-      ld2410::two_byte_to_int(this->buffer_data_[STILL_TARGET_LOW], this->buffer_data_[STILL_TARGET_HIGH]));
+      ld24xx::two_byte_to_uint16(this->buffer_data_[STILL_TARGET_LOW], this->buffer_data_[STILL_TARGET_HIGH]));
   SAFE_PUBLISH_SENSOR(this->still_target_energy_sensor_, this->buffer_data_[STILL_ENERGY]);
   SAFE_PUBLISH_SENSOR(
       this->detection_distance_sensor_,
-      ld2410::two_byte_to_int(this->buffer_data_[DETECT_DISTANCE_LOW], this->buffer_data_[DETECT_DISTANCE_HIGH]));
+      ld24xx::two_byte_to_uint16(this->buffer_data_[DETECT_DISTANCE_LOW], this->buffer_data_[DETECT_DISTANCE_HIGH]));
 
   if (engineering_mode) {
     /*
@@ -579,7 +577,7 @@ bool LD2410Component::handle_ack_data_() {
         None Duration: 33~34th bytes
       */
       updates.push_back(set_number_value(this->timeout_number_,
-                                         ld2410::two_byte_to_int(this->buffer_data_[32], this->buffer_data_[33])));
+                                         ld24xx::two_byte_to_uint16(this->buffer_data_[32], this->buffer_data_[33])));
       for (auto &update : updates) {
         update();
       }
diff --git a/esphome/components/ld2412/ld2412.cpp b/esphome/components/ld2412/ld2412.cpp
index 484d5bd281..f5bf42829e 100644
--- a/esphome/components/ld2412/ld2412.cpp
+++ b/esphome/components/ld2412/ld2412.cpp
@@ -192,8 +192,6 @@ static constexpr uint8_t DATA_FRAME_FOOTER[HEADER_FOOTER_SIZE] = {0xF8, 0xF7, 0x
 // MAC address the module uses when Bluetooth is disabled
 static constexpr uint8_t NO_MAC[] = {0x08, 0x05, 0x04, 0x03, 0x02, 0x01};
 
-static inline int two_byte_to_int(char firstbyte, char secondbyte) { return (int16_t) (secondbyte << 8) + firstbyte; }
-
 static inline bool validate_header_footer(const uint8_t *header_footer, const uint8_t *buffer) {
   return std::memcmp(header_footer, buffer, HEADER_FOOTER_SIZE) == 0;
 }
@@ -400,20 +398,20 @@ void LD2412Component::handle_periodic_data_() {
 #ifdef USE_SENSOR
   SAFE_PUBLISH_SENSOR(
       this->moving_target_distance_sensor_,
-      ld2412::two_byte_to_int(this->buffer_data_[MOVING_TARGET_LOW], this->buffer_data_[MOVING_TARGET_HIGH]))
+      ld24xx::two_byte_to_uint16(this->buffer_data_[MOVING_TARGET_LOW], this->buffer_data_[MOVING_TARGET_HIGH]))
   SAFE_PUBLISH_SENSOR(this->moving_target_energy_sensor_, this->buffer_data_[MOVING_ENERGY])
   SAFE_PUBLISH_SENSOR(
       this->still_target_distance_sensor_,
-      ld2412::two_byte_to_int(this->buffer_data_[STILL_TARGET_LOW], this->buffer_data_[STILL_TARGET_HIGH]))
+      ld24xx::two_byte_to_uint16(this->buffer_data_[STILL_TARGET_LOW], this->buffer_data_[STILL_TARGET_HIGH]))
   SAFE_PUBLISH_SENSOR(this->still_target_energy_sensor_, this->buffer_data_[STILL_ENERGY])
   if (this->detection_distance_sensor_ != nullptr) {
     int new_detect_distance = 0;
     if (target_state != 0x00 && (target_state & MOVE_BITMASK)) {
       new_detect_distance =
-          ld2412::two_byte_to_int(this->buffer_data_[MOVING_TARGET_LOW], this->buffer_data_[MOVING_TARGET_HIGH]);
+          ld24xx::two_byte_to_uint16(this->buffer_data_[MOVING_TARGET_LOW], this->buffer_data_[MOVING_TARGET_HIGH]);
     } else if (target_state != 0x00) {
       new_detect_distance =
-          ld2412::two_byte_to_int(this->buffer_data_[STILL_TARGET_LOW], this->buffer_data_[STILL_TARGET_HIGH]);
+          ld24xx::two_byte_to_uint16(this->buffer_data_[STILL_TARGET_LOW], this->buffer_data_[STILL_TARGET_HIGH]);
     }
     this->detection_distance_sensor_->publish_state_if_not_dup(new_detect_distance);
   }
@@ -638,8 +636,8 @@ bool LD2412Component::handle_ack_data_() {
         None Duration: 11~12th bytes
       */
       updates.push_back(set_number_value(this->timeout_number_,
-                                         ld2412::two_byte_to_int(this->buffer_data_[12], this->buffer_data_[13])));
-      ESP_LOGV(TAG, "timeout_number_: %u", ld2412::two_byte_to_int(this->buffer_data_[12], this->buffer_data_[13]));
+                                         ld24xx::two_byte_to_uint16(this->buffer_data_[12], this->buffer_data_[13])));
+      ESP_LOGV(TAG, "timeout_number_: %u", ld24xx::two_byte_to_uint16(this->buffer_data_[12], this->buffer_data_[13]));
       /*
         Output pin configuration: 13th bytes
       */
diff --git a/esphome/components/ld24xx/ld24xx.h b/esphome/components/ld24xx/ld24xx.h
index fd55167974..f8a5299e3a 100644
--- a/esphome/components/ld24xx/ld24xx.h
+++ b/esphome/components/ld24xx/ld24xx.h
@@ -39,6 +39,9 @@
 
 namespace esphome::ld24xx {
 
+/// Parse a little-endian 16-bit unsigned value from two bytes.
+static constexpr uint16_t two_byte_to_uint16(uint8_t low, uint8_t high) { return ((uint16_t) high << 8) | low; }
+
 // Helper to find index of value in constexpr array
 template<size_t N> optional<size_t> find_index(const uint32_t (&arr)[N], uint32_t value) {
   for (size_t i = 0; i < N; i++) {