diff --git a/esphome/components/dallas/dallas_component.cpp b/esphome/components/dallas/dallas_component.cpp
index 8d7f2e4deb..3610e79447 100644
--- a/esphome/components/dallas/dallas_component.cpp
+++ b/esphome/components/dallas/dallas_component.cpp
@@ -38,10 +38,9 @@ void DallasComponent::setup() {
   raw_sensors = this->one_wire_->search_vec();
 
   for (auto &address : raw_sensors) {
-    std::string s = uint64_to_string(address);
     auto *address8 = reinterpret_cast<uint8_t *>(&address);
     if (crc8(address8, 7) != address8[7]) {
-      ESP_LOGW(TAG, "Dallas device 0x%s has invalid CRC.", s.c_str());
+      ESP_LOGW(TAG, "Dallas device 0x%s has invalid CRC.", format_hex(address).c_str());
       continue;
     }
     if (address8[0] != DALLAS_MODEL_DS18S20 && address8[0] != DALLAS_MODEL_DS1822 &&
@@ -77,8 +76,7 @@ void DallasComponent::dump_config() {
   } else {
     ESP_LOGD(TAG, "  Found sensors:");
     for (auto &address : this->found_sensors_) {
-      std::string s = uint64_to_string(address);
-      ESP_LOGD(TAG, "    0x%s", s.c_str());
+      ESP_LOGD(TAG, "    0x%s", format_hex(address).c_str());
     }
   }
 
@@ -147,7 +145,7 @@ void DallasTemperatureSensor::set_index(uint8_t index) { this->index_ = index; }
 uint8_t *DallasTemperatureSensor::get_address8() { return reinterpret_cast<uint8_t *>(&this->address_); }
 const std::string &DallasTemperatureSensor::get_address_name() {
   if (this->address_name_.empty()) {
-    this->address_name_ = std::string("0x") + uint64_to_string(this->address_);
+    this->address_name_ = std::string("0x") + format_hex(this->address_);
   }
 
   return this->address_name_;
@@ -237,7 +235,7 @@ float DallasTemperatureSensor::get_temp_c() {
 
   return temp / 128.0f;
 }
-std::string DallasTemperatureSensor::unique_id() { return "dallas-" + uint64_to_string(this->address_); }
+std::string DallasTemperatureSensor::unique_id() { return "dallas-" + str_upper_case(format_hex(this->address_)); }
 
 }  // namespace dallas
 }  // namespace esphome
diff --git a/esphome/components/debug/debug_component.cpp b/esphome/components/debug/debug_component.cpp
index 40eb20fa6e..f3d0bded13 100644
--- a/esphome/components/debug/debug_component.cpp
+++ b/esphome/components/debug/debug_component.cpp
@@ -101,7 +101,7 @@ void DebugComponent::dump_config() {
     info.features &= ~CHIP_FEATURE_BT;
   }
   if (info.features)
-    features += "Other:" + uint64_to_string(info.features);
+    features += "Other:" + format_hex(info.features);
   ESP_LOGD(TAG, "Chip: Model=%s, Features=%s Cores=%u, Revision=%u", model, features.c_str(), info.cores,
            info.revision);
 
diff --git a/esphome/core/helpers.cpp b/esphome/core/helpers.cpp
index 62f4e87201..db6bfeb79b 100644
--- a/esphome/core/helpers.cpp
+++ b/esphome/core/helpers.cpp
@@ -130,18 +130,6 @@ std::string value_accuracy_to_string(float value, int8_t accuracy_decimals) {
   snprintf(tmp, sizeof(tmp), "%.*f", accuracy_decimals, value);
   return std::string(tmp);
 }
-std::string uint64_to_string(uint64_t num) {
-  char buffer[17];
-  auto *address16 = reinterpret_cast<uint16_t *>(&num);
-  snprintf(buffer, sizeof(buffer), "%04X%04X%04X%04X", address16[3], address16[2], address16[1], address16[0]);
-  return std::string(buffer);
-}
-std::string uint32_to_string(uint32_t num) {
-  char buffer[9];
-  auto *address16 = reinterpret_cast<uint16_t *>(&num);
-  snprintf(buffer, sizeof(buffer), "%04X%04X", address16[1], address16[0]);
-  return std::string(buffer);
-}
 
 ParseOnOffState parse_on_off(const char *str, const char *on, const char *off) {
   if (on == nullptr && strcasecmp(str, "on") == 0)
diff --git a/esphome/core/helpers.h b/esphome/core/helpers.h
index c2f2e04339..22ed018855 100644
--- a/esphome/core/helpers.h
+++ b/esphome/core/helpers.h
@@ -105,12 +105,6 @@ float gamma_uncorrect(float value, float gamma);
 /// Create a string from a value and an accuracy in decimals.
 std::string value_accuracy_to_string(float value, int8_t accuracy_decimals);
 
-/// Convert a uint64_t to a hex string
-std::string uint64_to_string(uint64_t num);
-
-/// Convert a uint32_t to a hex string
-std::string uint32_to_string(uint32_t num);
-
 /// Convert RGB floats (0-1) to hue (0-360) & saturation/value percentage (0-1)
 void rgb_to_hsv(float red, float green, float blue, int &hue, float &saturation, float &value);
 /// Convert hue (0-360) & saturation/value percentage (0-1) to RGB floats (0-1)