diff --git a/esphome/components/dlms_meter/dlms_meter.cpp b/esphome/components/dlms_meter/dlms_meter.cpp
index 11d05b3a08..bd2150e8dd 100644
--- a/esphome/components/dlms_meter/dlms_meter.cpp
+++ b/esphome/components/dlms_meter/dlms_meter.cpp
@@ -1,7 +1,5 @@
 #include "dlms_meter.h"
 
-#include <cmath>
-
 #if defined(USE_ESP8266_FRAMEWORK_ARDUINO)
 #include <bearssl/bearssl.h>
 #elif defined(USE_ESP32)
@@ -410,7 +408,7 @@ void DlmsMeterComponent::decode_obis_(uint8_t *plaintext, uint16_t message_lengt
       if (current_position + 1 < message_length) {
         int8_t scaler = static_cast<int8_t>(plaintext[current_position + 1]);
         if (scaler != 0) {
-          value *= powf(10.0f, scaler);
+          value *= pow10_int(scaler);
         }
       }
 
diff --git a/esphome/components/kamstrup_kmp/kamstrup_kmp.cpp b/esphome/components/kamstrup_kmp/kamstrup_kmp.cpp
index 534939f9af..00c65a1937 100644
--- a/esphome/components/kamstrup_kmp/kamstrup_kmp.cpp
+++ b/esphome/components/kamstrup_kmp/kamstrup_kmp.cpp
@@ -222,11 +222,11 @@ void KamstrupKMPComponent::parse_command_message_(uint16_t command, const uint8_
   }
 
   // Calculate exponent
-  float exponent = msg[6] & 0x3F;
+  int8_t exp_val = msg[6] & 0x3F;
   if (msg[6] & 0x40) {
-    exponent = -exponent;
+    exp_val = -exp_val;
   }
-  exponent = powf(10, exponent);
+  float exponent = pow10_int(exp_val);
   if (msg[6] & 0x80) {
     exponent = -exponent;
   }