diff --git a/include/openthread/instance.h b/include/openthread/instance.h
index c766b4071..e7696c029 100644
--- a/include/openthread/instance.h
+++ b/include/openthread/instance.h
@@ -53,7 +53,7 @@ extern "C" {
  * @note This number versions both OpenThread platform and user APIs.
  *
  */
-#define OPENTHREAD_API_VERSION (274)
+#define OPENTHREAD_API_VERSION (275)
 
 /**
  * @addtogroup api-instance
diff --git a/include/openthread/link.h b/include/openthread/link.h
index 7479764cb..289cf858b 100644
--- a/include/openthread/link.h
+++ b/include/openthread/link.h
@@ -52,7 +52,7 @@ extern "C" {
  * @{
  *
  */
-#define OT_US_PER_TEN_SYMBOLS 160 ///< The microseconds per 10 symbols.
+#define OT_US_PER_TEN_SYMBOLS OT_RADIO_TEN_SYMBOLS_TIME ///< Time for 10 symbols in units of microseconds
 
 /**
  * This structure represents link-specific information for messages received from the Thread radio.
diff --git a/include/openthread/platform/radio.h b/include/openthread/platform/radio.h
index 67a3619d6..70ceddc5c 100644
--- a/include/openthread/platform/radio.h
+++ b/include/openthread/platform/radio.h
@@ -68,13 +68,20 @@ extern "C" {
 
 enum
 {
-    OT_RADIO_FRAME_MAX_SIZE    = 127,    ///< aMaxPHYPacketSize (IEEE 802.15.4-2006)
-    OT_RADIO_FRAME_MIN_SIZE    = 3,      ///< Minimal size of frame FCS + CONTROL
+    OT_RADIO_FRAME_MAX_SIZE = 127, ///< aMaxPHYPacketSize (IEEE 802.15.4-2006)
+    OT_RADIO_FRAME_MIN_SIZE = 3,   ///< Minimal size of frame FCS + CONTROL
+
     OT_RADIO_SYMBOLS_PER_OCTET = 2,      ///< 2.4 GHz IEEE 802.15.4-2006
     OT_RADIO_BIT_RATE          = 250000, ///< 2.4 GHz IEEE 802.15.4 (bits per second)
     OT_RADIO_BITS_PER_OCTET    = 8,      ///< Number of bits per octet
 
-    OT_RADIO_SYMBOL_TIME   = ((OT_RADIO_BITS_PER_OCTET / OT_RADIO_SYMBOLS_PER_OCTET) * 1000000) / OT_RADIO_BIT_RATE,
+    // Per IEEE 802.15.4-2015, 12.3.3 Symbol rate:
+    // The O-QPSK PHY symbol rate shall be 25 ksymbol/s when operating in the 868 MHz band and 62.5 ksymbol/s when
+    // operating in the 780 MHz, 915 MHz, 2380 MHz, or 2450 MHz band
+    OT_RADIO_SYMBOL_RATE = 62500, ///< The O-QPSK PHY symbol rate when operating in the 780MHz, 915MHz, 2380MHz, 2450MHz
+    OT_RADIO_SYMBOL_TIME = 1000000 * 1 / OT_RADIO_SYMBOL_RATE, ///< Symbol duration time in unit of microseconds
+    OT_RADIO_TEN_SYMBOLS_TIME = 10 * OT_RADIO_SYMBOL_TIME,     ///< Time for 10 symbols in unit of microseconds
+
     OT_RADIO_LQI_NONE      = 0,   ///< LQI measurement not supported
     OT_RADIO_RSSI_INVALID  = 127, ///< Invalid or unknown RSSI value
     OT_RADIO_POWER_INVALID = 127, ///< Invalid or unknown power value
diff --git a/src/core/radio/radio.hpp b/src/core/radio/radio.hpp
index ba5e279f6..615115862 100644
--- a/src/core/radio/radio.hpp
+++ b/src/core/radio/radio.hpp
@@ -45,7 +45,7 @@
 
 namespace ot {
 
-static constexpr uint32_t kUsPerTenSymbols = OT_US_PER_TEN_SYMBOLS; ///< The microseconds per 10 symbols.
+static constexpr uint32_t kUsPerTenSymbols = OT_US_PER_TEN_SYMBOLS; ///< Time for 10 symbols in units of microseconds
 
 #if OPENTHREAD_CONFIG_MAC_CSL_RECEIVER_ENABLE
 /**