diff --git a/custom_components/mikrotik_router/mikrotik_controller.py b/custom_components/mikrotik_router/mikrotik_controller.py
index 7e12ab6..6a9095e 100644
--- a/custom_components/mikrotik_router/mikrotik_controller.py
+++ b/custom_components/mikrotik_router/mikrotik_controller.py
@@ -1,5 +1,6 @@
 """Mikrotik Controller for Mikrotik Router."""
 
+import re
 import asyncio
 import logging
 from datetime import timedelta
@@ -705,15 +706,28 @@ class MikrotikControllerData:
                 {"name": "platform", "default": "unknown"},
                 {"name": "board-name", "default": "unknown"},
                 {"name": "version", "default": "unknown"},
-                {"name": "uptime", "default": "unknown"},
+                {"name": "uptime_str", "source": "uptime", "default": "unknown"},
                 {"name": "cpu-load", "default": "unknown"},
                 {"name": "free-memory", "default": 0},
                 {"name": "total-memory", "default": 0},
                 {"name": "free-hdd-space", "default": 0},
                 {"name": "total-hdd-space", "default": 0},
             ],
+            ensure_vals=[
+                {"name": "uptime", "default": 0},
+            ],
         )
 
+        l = list(map(int, re.split('[whms]', self.data["resource"]["uptime_str"])[:-1]))
+        if len(l) == 4:
+            self.data["resource"]["uptime"] =  l[0] * 604800 + l[1] * 3600 + l[2] * 60 + l[3]
+        elif len(l) == 3:
+            self.data["resource"]["uptime"] =  l[0] * 3600 + l[1] * 60 + l[2]
+        elif len(l) == 2:
+            self.data["resource"]["uptime"] =  l[0] * 60 + l[1]
+        else:
+            self.data["resource"]["uptime"] = l[0]
+
         if self.data["resource"]["total-memory"] > 0:
             self.data["resource"]["memory-usage"] = round(
                 (
diff --git a/custom_components/mikrotik_router/sensor.py b/custom_components/mikrotik_router/sensor.py
index d59c5d9..d3a6197 100644
--- a/custom_components/mikrotik_router/sensor.py
+++ b/custom_components/mikrotik_router/sensor.py
@@ -39,6 +39,15 @@ ATTR_PATH = "data_path"
 ATTR_ATTR = "data_attr"
 
 SENSOR_TYPES = {
+    "system_uptime": {
+        ATTR_DEVICE_CLASS: None,
+        ATTR_ICON: "mdi:clock-outline",
+        ATTR_LABEL: "Uptime",
+        ATTR_UNIT: "s",
+        ATTR_GROUP: "System",
+        ATTR_PATH: "resource",
+        ATTR_ATTR: "uptime",
+    },
     "system_temperature": {
         ATTR_DEVICE_CLASS: None,
         ATTR_ICON: "mdi:thermometer",