diff --git a/components/esp_hw_support/port/esp32/rtc_time.c b/components/esp_hw_support/port/esp32/rtc_time.c
index 4f1b40607a..a687420d5c 100644
--- a/components/esp_hw_support/port/esp32/rtc_time.c
+++ b/components/esp_hw_support/port/esp32/rtc_time.c
@@ -188,3 +188,5 @@ uint32_t rtc_clk_freq_cal(uint32_t cal_val)
     }
     return 1000000ULL * (1 << RTC_CLK_CAL_FRACT) / cal_val;
 }
+
+uint32_t rtc_clk_freq_to_period(uint32_t) __attribute__((alias("rtc_clk_freq_cal")));
diff --git a/components/esp_hw_support/port/esp32c2/rtc_time.c b/components/esp_hw_support/port/esp32c2/rtc_time.c
index f3336b71b0..1b76c8b4bf 100644
--- a/components/esp_hw_support/port/esp32c2/rtc_time.c
+++ b/components/esp_hw_support/port/esp32c2/rtc_time.c
@@ -188,3 +188,5 @@ uint32_t rtc_clk_freq_cal(uint32_t cal_val)
     }
     return 1000000ULL * (1 << RTC_CLK_CAL_FRACT) / cal_val;
 }
+
+uint32_t rtc_clk_freq_to_period(uint32_t) __attribute__((alias("rtc_clk_freq_cal")));
diff --git a/components/esp_hw_support/port/esp32c3/rtc_time.c b/components/esp_hw_support/port/esp32c3/rtc_time.c
index c5cc7207ef..5b9c2bc68a 100644
--- a/components/esp_hw_support/port/esp32c3/rtc_time.c
+++ b/components/esp_hw_support/port/esp32c3/rtc_time.c
@@ -191,3 +191,5 @@ uint32_t rtc_clk_freq_cal(uint32_t cal_val)
     }
     return 1000000ULL * (1 << RTC_CLK_CAL_FRACT) / cal_val;
 }
+
+uint32_t rtc_clk_freq_to_period(uint32_t) __attribute__((alias("rtc_clk_freq_cal")));
diff --git a/components/esp_hw_support/port/esp32c6/rtc_time.c b/components/esp_hw_support/port/esp32c6/rtc_time.c
index 4ceec1eb93..bd5e25f467 100644
--- a/components/esp_hw_support/port/esp32c6/rtc_time.c
+++ b/components/esp_hw_support/port/esp32c6/rtc_time.c
@@ -264,3 +264,5 @@ uint32_t rtc_clk_freq_cal(uint32_t cal_val)
     }
     return 1000000ULL * (1 << RTC_CLK_CAL_FRACT) / cal_val;
 }
+
+uint32_t rtc_clk_freq_to_period(uint32_t) __attribute__((alias("rtc_clk_freq_cal")));
diff --git a/components/esp_hw_support/port/esp32h2/rtc_time.c b/components/esp_hw_support/port/esp32h2/rtc_time.c
index c267cc121c..7359aca203 100644
--- a/components/esp_hw_support/port/esp32h2/rtc_time.c
+++ b/components/esp_hw_support/port/esp32h2/rtc_time.c
@@ -267,3 +267,5 @@ uint32_t rtc_clk_freq_cal(uint32_t cal_val)
     }
     return 1000000ULL * (1 << RTC_CLK_CAL_FRACT) / cal_val;
 }
+
+uint32_t rtc_clk_freq_to_period(uint32_t) __attribute__((alias("rtc_clk_freq_cal")));
diff --git a/components/esp_hw_support/port/esp32s2/rtc_time.c b/components/esp_hw_support/port/esp32s2/rtc_time.c
index 5ae73e78d9..adf5d558b6 100644
--- a/components/esp_hw_support/port/esp32s2/rtc_time.c
+++ b/components/esp_hw_support/port/esp32s2/rtc_time.c
@@ -256,3 +256,5 @@ uint32_t rtc_clk_freq_cal(uint32_t cal_val)
     }
     return 1000000ULL * (1 << RTC_CLK_CAL_FRACT) / cal_val;
 }
+
+uint32_t rtc_clk_freq_to_period(uint32_t) __attribute__((alias("rtc_clk_freq_cal")));
diff --git a/components/esp_hw_support/port/esp32s3/rtc_time.c b/components/esp_hw_support/port/esp32s3/rtc_time.c
index 126bf4226d..9197332dbc 100644
--- a/components/esp_hw_support/port/esp32s3/rtc_time.c
+++ b/components/esp_hw_support/port/esp32s3/rtc_time.c
@@ -190,3 +190,5 @@ uint32_t rtc_clk_freq_cal(uint32_t cal_val)
     }
     return 1000000ULL * (1 << RTC_CLK_CAL_FRACT) / cal_val;
 }
+
+uint32_t rtc_clk_freq_to_period(uint32_t) __attribute__((alias("rtc_clk_freq_cal")));
diff --git a/components/soc/esp32/include/soc/rtc.h b/components/soc/esp32/include/soc/rtc.h
index efa692d6fe..a712d5fb1a 100644
--- a/components/soc/esp32/include/soc/rtc.h
+++ b/components/soc/esp32/include/soc/rtc.h
@@ -488,6 +488,14 @@ bool rtc_dig_8m_enabled(void);
  */
 uint32_t rtc_clk_freq_cal(uint32_t cal_val);
 
+/**
+ * @brief Calculate the slow clock period value by slow clock frequency
+ *
+ * @param freq_hz Frequency of the slow clock in Hz
+ * @return Fixed point value of slow clock period in microseconds
+ */
+uint32_t rtc_clk_freq_to_period(uint32_t freq_hz);
+
 /**
  * @brief sleep configuration for rtc_sleep_init function
  */
diff --git a/components/soc/esp32c2/include/soc/rtc.h b/components/soc/esp32c2/include/soc/rtc.h
index d8b3c1897c..3ea2f23fbb 100644
--- a/components/soc/esp32c2/include/soc/rtc.h
+++ b/components/soc/esp32c2/include/soc/rtc.h
@@ -514,6 +514,14 @@ bool rtc_dig_8m_enabled(void);
  */
 uint32_t rtc_clk_freq_cal(uint32_t cal_val);
 
+/**
+ * @brief Calculate the slow clock period value by slow clock frequency
+ *
+ * @param freq_hz Frequency of the slow clock in Hz
+ * @return Fixed point value of slow clock period in microseconds
+ */
+uint32_t rtc_clk_freq_to_period(uint32_t freq_hz);
+
 /**
  * @brief Power down flags for rtc_sleep_pd function
  */
diff --git a/components/soc/esp32c3/include/soc/rtc.h b/components/soc/esp32c3/include/soc/rtc.h
index 3e91b64bbf..165f8b957e 100644
--- a/components/soc/esp32c3/include/soc/rtc.h
+++ b/components/soc/esp32c3/include/soc/rtc.h
@@ -541,6 +541,14 @@ bool rtc_dig_8m_enabled(void);
  */
 uint32_t rtc_clk_freq_cal(uint32_t cal_val);
 
+/**
+ * @brief Calculate the slow clock period value by slow clock frequency
+ *
+ * @param freq_hz Frequency of the slow clock in Hz
+ * @return Fixed point value of slow clock period in microseconds
+ */
+uint32_t rtc_clk_freq_to_period(uint32_t freq_hz);
+
 /**
  * @brief Power down flags for rtc_sleep_pd function
  */
diff --git a/components/soc/esp32c6/include/soc/rtc.h b/components/soc/esp32c6/include/soc/rtc.h
index f73a508bc8..7fcb735095 100644
--- a/components/soc/esp32c6/include/soc/rtc.h
+++ b/components/soc/esp32c6/include/soc/rtc.h
@@ -485,6 +485,14 @@ bool rtc_dig_8m_enabled(void);
  */
 uint32_t rtc_clk_freq_cal(uint32_t cal_val);
 
+/**
+ * @brief Calculate the slow clock period value by slow clock frequency
+ *
+ * @param freq_hz Frequency of the slow clock in Hz
+ * @return Fixed point value of slow clock period in microseconds
+ */
+uint32_t rtc_clk_freq_to_period(uint32_t freq_hz);
+
 
 // -------------------------- CLOCK TREE DEFS ALIAS ----------------------------
 // **WARNING**: The following are only for backwards compatibility.
diff --git a/components/soc/esp32h2/include/soc/rtc.h b/components/soc/esp32h2/include/soc/rtc.h
index 3c6010db02..4a7f34885f 100644
--- a/components/soc/esp32h2/include/soc/rtc.h
+++ b/components/soc/esp32h2/include/soc/rtc.h
@@ -482,6 +482,14 @@ bool rtc_dig_8m_enabled(void);
  */
 uint32_t rtc_clk_freq_cal(uint32_t cal_val);
 
+/**
+ * @brief Calculate the slow clock period value by slow clock frequency
+ *
+ * @param freq_hz Frequency of the slow clock in Hz
+ * @return Fixed point value of slow clock period in microseconds
+ */
+uint32_t rtc_clk_freq_to_period(uint32_t freq_hz);
+
 // -------------------------- CLOCK TREE DEFS ALIAS ----------------------------
 // **WARNING**: The following are only for backwards compatibility.
 // Please use the declarations in soc/clk_tree_defs.h instead.
diff --git a/components/soc/esp32s2/include/soc/rtc.h b/components/soc/esp32s2/include/soc/rtc.h
index 3a333fa379..ad92d0fee9 100644
--- a/components/soc/esp32s2/include/soc/rtc.h
+++ b/components/soc/esp32s2/include/soc/rtc.h
@@ -574,6 +574,14 @@ bool rtc_dig_8m_enabled(void);
  */
 uint32_t rtc_clk_freq_cal(uint32_t cal_val);
 
+/**
+ * @brief Calculate the slow clock period value by slow clock frequency
+ *
+ * @param freq_hz Frequency of the slow clock in Hz
+ * @return Fixed point value of slow clock period in microseconds
+ */
+uint32_t rtc_clk_freq_to_period(uint32_t freq_hz);
+
 /**
  * @brief Power down flags for rtc_sleep_pd function
  */
diff --git a/components/soc/esp32s3/include/soc/rtc.h b/components/soc/esp32s3/include/soc/rtc.h
index e1b34178ba..52b46071d2 100644
--- a/components/soc/esp32s3/include/soc/rtc.h
+++ b/components/soc/esp32s3/include/soc/rtc.h
@@ -554,6 +554,14 @@ bool rtc_dig_8m_enabled(void);
  */
 uint32_t rtc_clk_freq_cal(uint32_t cal_val);
 
+/**
+ * @brief Calculate the slow clock period value by slow clock frequency
+ *
+ * @param freq_hz Frequency of the slow clock in Hz
+ * @return Fixed point value of slow clock period in microseconds
+ */
+uint32_t rtc_clk_freq_to_period(uint32_t freq_hz);
+
 /**
  * @brief Power up flags for rtc_sleep_pd function
  */