diff --git a/homeassistant/components/nzbget/sensor.py b/homeassistant/components/nzbget/sensor.py
index 6d94ef35456..7f4d31c3adf 100644
--- a/homeassistant/components/nzbget/sensor.py
+++ b/homeassistant/components/nzbget/sensor.py
@@ -13,6 +13,7 @@ from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import CONF_NAME, UnitOfDataRate, UnitOfInformation
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
+from homeassistant.helpers.typing import StateType
 from homeassistant.util.dt import utcnow
 
 from . import NZBGetEntity
@@ -32,7 +33,8 @@ SENSOR_TYPES: tuple[SensorEntityDescription, ...] = (
         key="AverageDownloadRate",
         name="Average Speed",
         device_class=SensorDeviceClass.DATA_RATE,
-        native_unit_of_measurement=UnitOfDataRate.MEGABYTES_PER_SECOND,
+        native_unit_of_measurement=UnitOfDataRate.BYTES_PER_SECOND,
+        suggested_unit_of_measurement=UnitOfDataRate.MEGABYTES_PER_SECOND,
     ),
     SensorEntityDescription(
         key="DownloadPaused",
@@ -42,7 +44,8 @@ SENSOR_TYPES: tuple[SensorEntityDescription, ...] = (
         key="DownloadRate",
         name="Speed",
         device_class=SensorDeviceClass.DATA_RATE,
-        native_unit_of_measurement=UnitOfDataRate.MEGABYTES_PER_SECOND,
+        native_unit_of_measurement=UnitOfDataRate.BYTES_PER_SECOND,
+        suggested_unit_of_measurement=UnitOfDataRate.MEGABYTES_PER_SECOND,
     ),
     SensorEntityDescription(
         key="DownloadedSizeMB",
@@ -80,7 +83,8 @@ SENSOR_TYPES: tuple[SensorEntityDescription, ...] = (
         key="DownloadLimit",
         name="Speed Limit",
         device_class=SensorDeviceClass.DATA_RATE,
-        native_unit_of_measurement=UnitOfDataRate.MEGABYTES_PER_SECOND,
+        native_unit_of_measurement=UnitOfDataRate.BYTES_PER_SECOND,
+        suggested_unit_of_measurement=UnitOfDataRate.MEGABYTES_PER_SECOND,
     ),
 )
 
@@ -121,30 +125,17 @@ class NZBGetSensor(NZBGetEntity, SensorEntity):
 
         self.entity_description = description
         self._attr_unique_id = f"{entry_id}_{description.key}"
-        self._native_value: datetime | None = None
 
     @property
-    def native_value(self):
+    def native_value(self) -> StateType | datetime:
         """Return the state of the sensor."""
         sensor_type = self.entity_description.key
         value = self.coordinator.data["status"].get(sensor_type)
 
-        if value is None:
-            _LOGGER.warning("Unable to locate value for %s", sensor_type)
-            self._native_value = None
-        elif "DownloadRate" in sensor_type and value > 0:
-            # Convert download rate from Bytes/s to MBytes/s
-            self._native_value = round(value / 2**20, 2)
-        elif "DownloadLimit" in sensor_type and value > 0:
-            # Convert download rate from Bytes/s to MBytes/s
-            self._native_value = round(value / 2**20, 2)
-        elif "UpTimeSec" in sensor_type and value > 0:
+        if value is not None and "UpTimeSec" in sensor_type and value > 0:
             uptime = utcnow().replace(microsecond=0) - timedelta(seconds=value)
             if not isinstance(self._attr_native_value, datetime) or abs(
                 uptime - self._attr_native_value
             ) > timedelta(seconds=5):
-                self._native_value = uptime
-        else:
-            self._native_value = value
-
-        return self._native_value
+                return uptime
+        return value
diff --git a/tests/components/nzbget/test_sensor.py b/tests/components/nzbget/test_sensor.py
index 980fe14970a..e9365e36b24 100644
--- a/tests/components/nzbget/test_sensor.py
+++ b/tests/components/nzbget/test_sensor.py
@@ -34,14 +34,14 @@ async def test_sensors(hass: HomeAssistant, nzbget_api) -> None:
         ),
         "average_speed": (
             "AverageDownloadRate",
-            "1.19",
+            "1.250000",
             UnitOfDataRate.MEGABYTES_PER_SECOND,
             SensorDeviceClass.DATA_RATE,
         ),
         "download_paused": ("DownloadPaused", "False", None, None),
         "speed": (
             "DownloadRate",
-            "2.38",
+            "2.500000",
             UnitOfDataRate.MEGABYTES_PER_SECOND,
             SensorDeviceClass.DATA_RATE,
         ),
@@ -68,7 +68,7 @@ async def test_sensors(hass: HomeAssistant, nzbget_api) -> None:
         "uptime": ("UpTimeSec", uptime.isoformat(), None, SensorDeviceClass.TIMESTAMP),
         "speed_limit": (
             "DownloadLimit",
-            "0.95",
+            "1.000000",
             UnitOfDataRate.MEGABYTES_PER_SECOND,
             SensorDeviceClass.DATA_RATE,
         ),