diff --git a/arch/arm/src/imx9/imx9_flexcan.c b/arch/arm/src/imx9/imx9_flexcan.c
index 9c5146eadfa..5936b65d4ad 100644
--- a/arch/arm/src/imx9/imx9_flexcan.c
+++ b/arch/arm/src/imx9/imx9_flexcan.c
@@ -1549,11 +1549,11 @@ static int imx9_ioctl(struct net_driver_s *dev, int cmd,
         {
           struct can_ioctl_data_s *req =
               (struct can_ioctl_data_s *)((uintptr_t)arg);
-          req->arbi_bitrate = priv->arbi_timing.bitrate / 1000; /* kbit/s */
+          req->arbi_bitrate = priv->arbi_timing.bitrate;
           req->arbi_samplep = priv->arbi_timing.samplep;
           if (priv->canfd_capable)
             {
-              req->data_bitrate = priv->data_timing.bitrate / 1000; /* kbit/s */
+              req->data_bitrate = priv->data_timing.bitrate;
               req->data_samplep = priv->data_timing.samplep;
             }
           else
@@ -1572,7 +1572,7 @@ static int imx9_ioctl(struct net_driver_s *dev, int cmd,
               (struct can_ioctl_data_s *)((uintptr_t)arg);
 
           struct flexcan_timeseg arbi_timing;
-          arbi_timing.bitrate = req->arbi_bitrate * 1000;
+          arbi_timing.bitrate = req->arbi_bitrate;
           arbi_timing.samplep = req->arbi_samplep;
 
           if (imx9_bitratetotimeseg(&arbi_timing, 10, 0))
@@ -1586,7 +1586,7 @@ static int imx9_ioctl(struct net_driver_s *dev, int cmd,
 
           if (priv->canfd_capable)
           {
-            data_timing.bitrate = req->data_bitrate * 1000;
+            data_timing.bitrate = req->data_bitrate;
             data_timing.samplep = req->data_samplep;
 
             if (ret == OK && imx9_bitratetotimeseg(&data_timing, 10, 1))
diff --git a/arch/arm/src/imxrt/imxrt_flexcan.c b/arch/arm/src/imxrt/imxrt_flexcan.c
index bd7a230dcad..530e58b63ef 100644
--- a/arch/arm/src/imxrt/imxrt_flexcan.c
+++ b/arch/arm/src/imxrt/imxrt_flexcan.c
@@ -1517,11 +1517,11 @@ static int imxrt_ioctl(struct net_driver_s *dev, int cmd,
         {
           struct can_ioctl_data_s *req =
               (struct can_ioctl_data_s *)((uintptr_t)arg);
-          req->arbi_bitrate = priv->arbi_timing.bitrate / 1000; /* kbit/s */
+          req->arbi_bitrate = priv->arbi_timing.bitrate;
           req->arbi_samplep = priv->arbi_timing.samplep;
           if (priv->canfd_capable)
             {
-              req->data_bitrate = priv->data_timing.bitrate / 1000; /* kbit/s */
+              req->data_bitrate = priv->data_timing.bitrate;
               req->data_samplep = priv->data_timing.samplep;
             }
           else
@@ -1540,7 +1540,7 @@ static int imxrt_ioctl(struct net_driver_s *dev, int cmd,
               (struct can_ioctl_data_s *)((uintptr_t)arg);
 
           struct flexcan_timeseg arbi_timing;
-          arbi_timing.bitrate = req->arbi_bitrate * 1000;
+          arbi_timing.bitrate = req->arbi_bitrate;
           arbi_timing.samplep = req->arbi_samplep;
 
           if (imxrt_bitratetotimeseg(&arbi_timing, 10, 0))
@@ -1554,7 +1554,7 @@ static int imxrt_ioctl(struct net_driver_s *dev, int cmd,
 
           if (priv->canfd_capable)
           {
-            data_timing.bitrate = req->data_bitrate * 1000;
+            data_timing.bitrate = req->data_bitrate;
             data_timing.samplep = req->data_samplep;
 
             if (ret == OK && imxrt_bitratetotimeseg(&data_timing, 10, 1))
diff --git a/arch/arm/src/kinetis/kinetis_flexcan.c b/arch/arm/src/kinetis/kinetis_flexcan.c
index a1a824b217e..ccc3d98b591 100644
--- a/arch/arm/src/kinetis/kinetis_flexcan.c
+++ b/arch/arm/src/kinetis/kinetis_flexcan.c
@@ -1485,10 +1485,10 @@ static int kinetis_ioctl(struct net_driver_s *dev, int cmd,
         {
           struct can_ioctl_data_s *req =
               (struct can_ioctl_data_s *)((uintptr_t)arg);
-          req->arbi_bitrate = priv->arbi_timing.bitrate / 1000; /* kbit/s */
+          req->arbi_bitrate = priv->arbi_timing.bitrate;
           req->arbi_samplep = priv->arbi_timing.samplep;
 #ifdef CONFIG_NET_CAN_CANFD
-          req->data_bitrate = priv->data_timing.bitrate / 1000; /* kbit/s */
+          req->data_bitrate = priv->data_timing.bitrate;
           req->data_samplep = priv->data_timing.samplep;
 #else
           req->data_bitrate = 0;
@@ -1504,7 +1504,7 @@ static int kinetis_ioctl(struct net_driver_s *dev, int cmd,
               (struct can_ioctl_data_s *)((uintptr_t)arg);
 
           struct flexcan_timeseg arbi_timing;
-          arbi_timing.bitrate = req->arbi_bitrate * 1000;
+          arbi_timing.bitrate = req->arbi_bitrate;
           arbi_timing.samplep = req->arbi_samplep;
 
           if (kinetis_bitratetotimeseg(&arbi_timing, 10, 0))
@@ -1518,7 +1518,7 @@ static int kinetis_ioctl(struct net_driver_s *dev, int cmd,
 
 #ifdef CONFIG_NET_CAN_CANFD
           struct flexcan_timeseg data_timing;
-          data_timing.bitrate = req->data_bitrate * 1000;
+          data_timing.bitrate = req->data_bitrate;
           data_timing.samplep = req->data_samplep;
 
           if (ret == OK && kinetis_bitratetotimeseg(&data_timing, 10, 1))
diff --git a/arch/arm/src/s32k1xx/s32k1xx_flexcan.c b/arch/arm/src/s32k1xx/s32k1xx_flexcan.c
index aa998eca3bd..c9439f4bb46 100644
--- a/arch/arm/src/s32k1xx/s32k1xx_flexcan.c
+++ b/arch/arm/src/s32k1xx/s32k1xx_flexcan.c
@@ -1468,10 +1468,10 @@ static int s32k1xx_ioctl(struct net_driver_s *dev, int cmd,
         {
           struct can_ioctl_data_s *req =
               (struct can_ioctl_data_s *)((uintptr_t)arg);
-          req->arbi_bitrate = priv->arbi_timing.bitrate / 1000; /* kbit/s */
+          req->arbi_bitrate = priv->arbi_timing.bitrate;
           req->arbi_samplep = priv->arbi_timing.samplep;
 #ifdef CONFIG_NET_CAN_CANFD
-          req->data_bitrate = priv->data_timing.bitrate / 1000; /* kbit/s */
+          req->data_bitrate = priv->data_timing.bitrate;
           req->data_samplep = priv->data_timing.samplep;
 #else
           req->data_bitrate = 0;
@@ -1487,7 +1487,7 @@ static int s32k1xx_ioctl(struct net_driver_s *dev, int cmd,
               (struct can_ioctl_data_s *)((uintptr_t)arg);
 
           struct flexcan_timeseg arbi_timing;
-          arbi_timing.bitrate = req->arbi_bitrate * 1000;
+          arbi_timing.bitrate = req->arbi_bitrate;
           arbi_timing.samplep = req->arbi_samplep;
 
           if (s32k1xx_bitratetotimeseg(&arbi_timing, 10, 0))
@@ -1501,7 +1501,7 @@ static int s32k1xx_ioctl(struct net_driver_s *dev, int cmd,
 
 #ifdef CONFIG_NET_CAN_CANFD
           struct flexcan_timeseg data_timing;
-          data_timing.bitrate = req->data_bitrate * 1000;
+          data_timing.bitrate = req->data_bitrate;
           data_timing.samplep = req->data_samplep;
 
           if (ret == OK && s32k1xx_bitratetotimeseg(&data_timing, 10, 1))
diff --git a/arch/arm/src/s32k3xx/s32k3xx_flexcan.c b/arch/arm/src/s32k3xx/s32k3xx_flexcan.c
index a5472a1339d..49a978ad2a7 100644
--- a/arch/arm/src/s32k3xx/s32k3xx_flexcan.c
+++ b/arch/arm/src/s32k3xx/s32k3xx_flexcan.c
@@ -1657,10 +1657,10 @@ static int s32k3xx_ioctl(struct net_driver_s *dev, int cmd,
         {
           struct can_ioctl_data_s *req =
               (struct can_ioctl_data_s *)((uintptr_t)arg);
-          req->arbi_bitrate = priv->arbi_timing.bitrate / 1000; /* kbit/s */
+          req->arbi_bitrate = priv->arbi_timing.bitrate;
           req->arbi_samplep = priv->arbi_timing.samplep;
 #ifdef CONFIG_NET_CAN_CANFD
-          req->data_bitrate = priv->data_timing.bitrate / 1000; /* kbit/s */
+          req->data_bitrate = priv->data_timing.bitrate;
           req->data_samplep = priv->data_timing.samplep;
 #else
           req->data_bitrate = 0;
@@ -1676,7 +1676,7 @@ static int s32k3xx_ioctl(struct net_driver_s *dev, int cmd,
               (struct can_ioctl_data_s *)((uintptr_t)arg);
 
           struct flexcan_timeseg arbi_timing;
-          arbi_timing.bitrate = req->arbi_bitrate * 1000;
+          arbi_timing.bitrate = req->arbi_bitrate;
           arbi_timing.samplep = req->arbi_samplep;
 
           if (s32k3xx_bitratetotimeseg(&arbi_timing, 10, 0,
@@ -1691,7 +1691,7 @@ static int s32k3xx_ioctl(struct net_driver_s *dev, int cmd,
 
 #ifdef CONFIG_NET_CAN_CANFD
           struct flexcan_timeseg data_timing;
-          data_timing.bitrate = req->data_bitrate * 1000;
+          data_timing.bitrate = req->data_bitrate;
           data_timing.samplep = req->data_samplep;
 
           if (ret == OK && s32k3xx_bitratetotimeseg(&data_timing, 10, 1,
diff --git a/arch/arm/src/stm32h7/stm32_fdcan_sock.c b/arch/arm/src/stm32h7/stm32_fdcan_sock.c
index 268fa18dfbe..f5455829da4 100644
--- a/arch/arm/src/stm32h7/stm32_fdcan_sock.c
+++ b/arch/arm/src/stm32h7/stm32_fdcan_sock.c
@@ -1951,9 +1951,9 @@ static int fdcan_netdev_ioctl(struct net_driver_s *dev, int cmd,
         {
           struct can_ioctl_data_s *req =
               (struct can_ioctl_data_s *)((uintptr_t)arg);
-          req->arbi_bitrate = priv->arbi_timing.bitrate / 1000; /* kbit/s */
+          req->arbi_bitrate = priv->arbi_timing.bitrate;
 #ifdef CONFIG_NET_CAN_CANFD
-          req->data_bitrate = priv->data_timing.bitrate / 1000; /* kbit/s */
+          req->data_bitrate = priv->data_timing.bitrate;
 #else
           req->data_bitrate = 0;
 #endif
@@ -1968,9 +1968,9 @@ static int fdcan_netdev_ioctl(struct net_driver_s *dev, int cmd,
 
           /* Apply the new timings (interface is guaranteed to be down) */
 
-          priv->arbi_timing.bitrate = req->arbi_bitrate * 1000;
+          priv->arbi_timing.bitrate = req->arbi_bitrate;
 #ifdef CONFIG_NET_CAN_CANFD
-          priv->data_timing.bitrate = req->data_bitrate * 1000;
+          priv->data_timing.bitrate = req->data_bitrate;
 #endif
           ret = OK;
         }
diff --git a/arch/arm64/src/imx9/imx9_flexcan.c b/arch/arm64/src/imx9/imx9_flexcan.c
index 7f22b699b68..4d603a005a3 100644
--- a/arch/arm64/src/imx9/imx9_flexcan.c
+++ b/arch/arm64/src/imx9/imx9_flexcan.c
@@ -1597,11 +1597,11 @@ static int imx9_ioctl(struct net_driver_s *dev, int cmd,
           struct imx9_driver_s *priv = (struct imx9_driver_s *)dev;
           struct can_ioctl_data_s *req =
               (struct can_ioctl_data_s *)((uintptr_t)arg);
-          req->arbi_bitrate = priv->arbi_timing.bitrate / 1000; /* kbit/s */
+          req->arbi_bitrate = priv->arbi_timing.bitrate;
           req->arbi_samplep = priv->arbi_timing.samplep;
           if (priv->canfd_capable)
             {
-              req->data_bitrate = priv->data_timing.bitrate / 1000; /* kbit/s */
+              req->data_bitrate = priv->data_timing.bitrate;
               req->data_samplep = priv->data_timing.samplep;
             }
           else
@@ -1622,12 +1622,12 @@ static int imx9_ioctl(struct net_driver_s *dev, int cmd,
           struct flexcan_timeseg arbi_timing;
           struct flexcan_timeseg data_timing;
 
-          arbi_timing.bitrate = req->arbi_bitrate * 1000;
+          arbi_timing.bitrate = req->arbi_bitrate;
           arbi_timing.samplep = req->arbi_samplep;
           ret = imx9_bitratetotimeseg(priv, &arbi_timing, false);
           if (ret == OK && priv->canfd_capable)
             {
-              data_timing.bitrate = req->data_bitrate * 1000;
+              data_timing.bitrate = req->data_bitrate;
               data_timing.samplep = req->data_samplep;
               ret = imx9_bitratetotimeseg(priv, &data_timing, true);
             }
diff --git a/include/net/if.h b/include/net/if.h
index 1992c08ed49..7afcc2d15a3 100644
--- a/include/net/if.h
+++ b/include/net/if.h
@@ -178,9 +178,9 @@ struct mii_ioctl_data_s
 
 struct can_ioctl_data_s
 {
-  uint16_t arbi_bitrate; /* Classic CAN / Arbitration phase bitrate kbit/s */
+  uint32_t arbi_bitrate; /* Classic CAN / Arbitration phase bitrate bit/s */
   uint16_t arbi_samplep; /* Classic CAN / Arbitration phase input % */
-  uint16_t data_bitrate; /* Data phase bitrate kbit/s */
+  uint32_t data_bitrate; /* Data phase bitrate bit/s */
   uint16_t data_samplep; /* Data phase sample point % */
 };