diff --git a/homeassistant/components/bmw_connected_drive/const.py b/homeassistant/components/bmw_connected_drive/const.py
index 6a8f82ae22d..cee94e942d5 100644
--- a/homeassistant/components/bmw_connected_drive/const.py
+++ b/homeassistant/components/bmw_connected_drive/const.py
@@ -1,10 +1,5 @@
 """Const file for the MyBMW integration."""
-from homeassistant.const import (
-    LENGTH_KILOMETERS,
-    LENGTH_MILES,
-    VOLUME_GALLONS,
-    VOLUME_LITERS,
-)
+from homeassistant.const import VOLUME_GALLONS, VOLUME_LITERS, UnitOfLength
 
 DOMAIN = "bmw_connected_drive"
 ATTRIBUTION = "Data provided by MyBMW"
@@ -20,8 +15,8 @@ CONF_REFRESH_TOKEN = "refresh_token"
 DATA_HASS_CONFIG = "hass_config"
 
 UNIT_MAP = {
-    "KILOMETERS": LENGTH_KILOMETERS,
-    "MILES": LENGTH_MILES,
+    "KILOMETERS": UnitOfLength.KILOMETERS,
+    "MILES": UnitOfLength.MILES,
     "LITERS": VOLUME_LITERS,
     "GALLONS": VOLUME_GALLONS,
 }
diff --git a/homeassistant/components/citybikes/sensor.py b/homeassistant/components/citybikes/sensor.py
index 5da74167a0b..c87427e0e7e 100644
--- a/homeassistant/components/citybikes/sensor.py
+++ b/homeassistant/components/citybikes/sensor.py
@@ -24,8 +24,7 @@ from homeassistant.const import (
     CONF_LONGITUDE,
     CONF_NAME,
     CONF_RADIUS,
-    LENGTH_FEET,
-    LENGTH_METERS,
+    UnitOfLength,
 )
 from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import PlatformNotReady
@@ -172,7 +171,9 @@ async def async_setup_platform(
     radius = config.get(CONF_RADIUS, 0)
     name = config[CONF_NAME]
     if hass.config.units is US_CUSTOMARY_SYSTEM:
-        radius = DistanceConverter.convert(radius, LENGTH_FEET, LENGTH_METERS)
+        radius = DistanceConverter.convert(
+            radius, UnitOfLength.FEET, UnitOfLength.METERS
+        )
 
     # Create a single instance of CityBikesNetworks.
     networks = hass.data.setdefault(CITYBIKES_NETWORKS, CityBikesNetworks(hass))
diff --git a/homeassistant/components/eafm/sensor.py b/homeassistant/components/eafm/sensor.py
index a695a38bb4b..2650aa35489 100644
--- a/homeassistant/components/eafm/sensor.py
+++ b/homeassistant/components/eafm/sensor.py
@@ -7,7 +7,7 @@ import async_timeout
 
 from homeassistant.components.sensor import SensorEntity, SensorStateClass
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import LENGTH_METERS
+from homeassistant.const import UnitOfLength
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.aiohttp_client import async_get_clientsession
 from homeassistant.helpers.device_registry import DeviceEntryType
@@ -23,7 +23,7 @@ from .const import DOMAIN
 _LOGGER = logging.getLogger(__name__)
 
 UNIT_MAPPING = {
-    "http://qudt.org/1.1/vocab/unit#Meter": LENGTH_METERS,
+    "http://qudt.org/1.1/vocab/unit#Meter": UnitOfLength.METERS,
 }
 
 
diff --git a/homeassistant/components/gdacs/__init__.py b/homeassistant/components/gdacs/__init__.py
index 269da061b58..9474e006dbb 100644
--- a/homeassistant/components/gdacs/__init__.py
+++ b/homeassistant/components/gdacs/__init__.py
@@ -11,8 +11,7 @@ from homeassistant.const import (
     CONF_LONGITUDE,
     CONF_RADIUS,
     CONF_SCAN_INTERVAL,
-    LENGTH_KILOMETERS,
-    LENGTH_MILES,
+    UnitOfLength,
 )
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers import aiohttp_client, config_validation as cv
@@ -89,7 +88,9 @@ async def async_setup_entry(hass: HomeAssistant, config_entry: ConfigEntry) -> b
 
     radius = config_entry.data[CONF_RADIUS]
     if hass.config.units is US_CUSTOMARY_SYSTEM:
-        radius = DistanceConverter.convert(radius, LENGTH_MILES, LENGTH_KILOMETERS)
+        radius = DistanceConverter.convert(
+            radius, UnitOfLength.MILES, UnitOfLength.KILOMETERS
+        )
     # Create feed entity manager for all platforms.
     manager = GdacsFeedEntityManager(hass, config_entry, radius)
     feeds[config_entry.entry_id] = manager
diff --git a/homeassistant/components/gdacs/geo_location.py b/homeassistant/components/gdacs/geo_location.py
index 5d3b8f3375b..06ab1aa0837 100644
--- a/homeassistant/components/gdacs/geo_location.py
+++ b/homeassistant/components/gdacs/geo_location.py
@@ -10,7 +10,7 @@ from aio_georss_gdacs.feed_entry import GdacsFeedEntry
 
 from homeassistant.components.geo_location import GeolocationEvent
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import LENGTH_KILOMETERS, LENGTH_MILES
+from homeassistant.const import UnitOfLength
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers import entity_registry as er
 from homeassistant.helpers.dispatcher import async_dispatcher_connect
@@ -89,7 +89,7 @@ class GdacsEvent(GeolocationEvent):
         self._feed_manager = feed_manager
         self._external_id = external_id
         self._attr_unique_id = f"{integration_id}_{external_id}"
-        self._attr_unit_of_measurement = LENGTH_KILOMETERS
+        self._attr_unit_of_measurement = UnitOfLength.KILOMETERS
         self._alert_level = None
         self._country = None
         self._description = None
@@ -108,7 +108,7 @@ class GdacsEvent(GeolocationEvent):
     async def async_added_to_hass(self) -> None:
         """Call when entity is added to hass."""
         if self.hass.config.units is US_CUSTOMARY_SYSTEM:
-            self._attr_unit_of_measurement = LENGTH_MILES
+            self._attr_unit_of_measurement = UnitOfLength.MILES
         self._remove_signal_delete = async_dispatcher_connect(
             self.hass, f"gdacs_delete_{self._external_id}", self._delete_callback
         )
@@ -151,7 +151,7 @@ class GdacsEvent(GeolocationEvent):
         # Convert distance if not metric system.
         if self.hass.config.units is US_CUSTOMARY_SYSTEM:
             self._attr_distance = DistanceConverter.convert(
-                feed_entry.distance_to_home, LENGTH_KILOMETERS, LENGTH_MILES
+                feed_entry.distance_to_home, UnitOfLength.KILOMETERS, UnitOfLength.MILES
             )
         else:
             self._attr_distance = feed_entry.distance_to_home
diff --git a/homeassistant/components/geo_json_events/geo_location.py b/homeassistant/components/geo_json_events/geo_location.py
index c0d6abe694f..166da1184c6 100644
--- a/homeassistant/components/geo_json_events/geo_location.py
+++ b/homeassistant/components/geo_json_events/geo_location.py
@@ -18,7 +18,7 @@ from homeassistant.const import (
     CONF_SCAN_INTERVAL,
     CONF_URL,
     EVENT_HOMEASSISTANT_START,
-    LENGTH_KILOMETERS,
+    UnitOfLength,
 )
 from homeassistant.core import Event, HomeAssistant, callback
 from homeassistant.helpers import aiohttp_client
@@ -146,7 +146,7 @@ class GeoJsonLocationEvent(GeolocationEvent):
 
     _attr_should_poll = False
     _attr_source = SOURCE
-    _attr_unit_of_measurement = LENGTH_KILOMETERS
+    _attr_unit_of_measurement = UnitOfLength.KILOMETERS
 
     def __init__(self, feed_manager: GenericFeedManager, external_id: str) -> None:
         """Initialize entity with data from feed entry."""
diff --git a/homeassistant/components/geo_rss_events/sensor.py b/homeassistant/components/geo_rss_events/sensor.py
index eba903a4cdf..2aade681e29 100644
--- a/homeassistant/components/geo_rss_events/sensor.py
+++ b/homeassistant/components/geo_rss_events/sensor.py
@@ -22,7 +22,7 @@ from homeassistant.const import (
     CONF_RADIUS,
     CONF_UNIT_OF_MEASUREMENT,
     CONF_URL,
-    LENGTH_KILOMETERS,
+    UnitOfLength,
 )
 from homeassistant.core import HomeAssistant
 import homeassistant.helpers.config_validation as cv
@@ -162,7 +162,9 @@ class GeoRssServiceSensor(SensorEntity):
             # And now compute the attributes from the filtered events.
             matrix = {}
             for entry in feed_entries:
-                matrix[entry.title] = f"{entry.distance_to_home:.0f}{LENGTH_KILOMETERS}"
+                matrix[
+                    entry.title
+                ] = f"{entry.distance_to_home:.0f}{UnitOfLength.KILOMETERS}"
             self._state_attributes = matrix
         elif status == UPDATE_OK_NO_DATA:
             _LOGGER.debug("Update successful, but no data received from %s", self._feed)
diff --git a/homeassistant/components/geonetnz_quakes/__init__.py b/homeassistant/components/geonetnz_quakes/__init__.py
index e09b4e720e3..dfe51f3119e 100644
--- a/homeassistant/components/geonetnz_quakes/__init__.py
+++ b/homeassistant/components/geonetnz_quakes/__init__.py
@@ -11,8 +11,7 @@ from homeassistant.const import (
     CONF_LONGITUDE,
     CONF_RADIUS,
     CONF_SCAN_INTERVAL,
-    LENGTH_KILOMETERS,
-    LENGTH_MILES,
+    UnitOfLength,
 )
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers import aiohttp_client, config_validation as cv
@@ -96,7 +95,9 @@ async def async_setup_entry(hass: HomeAssistant, config_entry: ConfigEntry) -> b
 
     radius = config_entry.data[CONF_RADIUS]
     if hass.config.units is US_CUSTOMARY_SYSTEM:
-        radius = DistanceConverter.convert(radius, LENGTH_MILES, LENGTH_KILOMETERS)
+        radius = DistanceConverter.convert(
+            radius, UnitOfLength.MILES, UnitOfLength.KILOMETERS
+        )
     # Create feed entity manager for all platforms.
     manager = GeonetnzQuakesFeedEntityManager(hass, config_entry, radius)
     feeds[config_entry.entry_id] = manager
diff --git a/homeassistant/components/geonetnz_quakes/geo_location.py b/homeassistant/components/geonetnz_quakes/geo_location.py
index a530c2d8fdb..411a0375461 100644
--- a/homeassistant/components/geonetnz_quakes/geo_location.py
+++ b/homeassistant/components/geonetnz_quakes/geo_location.py
@@ -9,7 +9,7 @@ from aio_geojson_geonetnz_quakes.feed_entry import GeonetnzQuakesFeedEntry
 
 from homeassistant.components.geo_location import GeolocationEvent
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import ATTR_TIME, LENGTH_KILOMETERS, LENGTH_MILES
+from homeassistant.const import ATTR_TIME, UnitOfLength
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers import entity_registry as er
 from homeassistant.helpers.dispatcher import async_dispatcher_connect
@@ -81,7 +81,7 @@ class GeonetnzQuakesEvent(GeolocationEvent):
         self._feed_manager = feed_manager
         self._external_id = external_id
         self._attr_unique_id = f"{integration_id}_{external_id}"
-        self._attr_unit_of_measurement = LENGTH_KILOMETERS
+        self._attr_unit_of_measurement = UnitOfLength.KILOMETERS
         self._depth = None
         self._locality = None
         self._magnitude = None
@@ -94,7 +94,7 @@ class GeonetnzQuakesEvent(GeolocationEvent):
     async def async_added_to_hass(self) -> None:
         """Call when entity is added to hass."""
         if self.hass.config.units is US_CUSTOMARY_SYSTEM:
-            self._attr_unit_of_measurement = LENGTH_MILES
+            self._attr_unit_of_measurement = UnitOfLength.MILES
         self._remove_signal_delete = async_dispatcher_connect(
             self.hass,
             f"geonetnz_quakes_delete_{self._external_id}",
@@ -138,7 +138,7 @@ class GeonetnzQuakesEvent(GeolocationEvent):
         # Convert distance if not metric system.
         if self.hass.config.units is US_CUSTOMARY_SYSTEM:
             self._attr_distance = DistanceConverter.convert(
-                feed_entry.distance_to_home, LENGTH_KILOMETERS, LENGTH_MILES
+                feed_entry.distance_to_home, UnitOfLength.KILOMETERS, UnitOfLength.MILES
             )
         else:
             self._attr_distance = feed_entry.distance_to_home
diff --git a/homeassistant/components/geonetnz_volcano/__init__.py b/homeassistant/components/geonetnz_volcano/__init__.py
index da081b42599..fb7770a5461 100644
--- a/homeassistant/components/geonetnz_volcano/__init__.py
+++ b/homeassistant/components/geonetnz_volcano/__init__.py
@@ -14,8 +14,7 @@ from homeassistant.const import (
     CONF_RADIUS,
     CONF_SCAN_INTERVAL,
     CONF_UNIT_SYSTEM,
-    LENGTH_KILOMETERS,
-    LENGTH_MILES,
+    UnitOfLength,
 )
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers import aiohttp_client, config_validation as cv
@@ -92,7 +91,9 @@ async def async_setup_entry(hass: HomeAssistant, config_entry: ConfigEntry) -> b
     radius = config_entry.data[CONF_RADIUS]
     unit_system = config_entry.data[CONF_UNIT_SYSTEM]
     if unit_system == IMPERIAL_UNITS:
-        radius = DistanceConverter.convert(radius, LENGTH_MILES, LENGTH_KILOMETERS)
+        radius = DistanceConverter.convert(
+            radius, UnitOfLength.MILES, UnitOfLength.KILOMETERS
+        )
     # Create feed entity manager for all platforms.
     manager = GeonetnzVolcanoFeedEntityManager(hass, config_entry, radius, unit_system)
     hass.data[DOMAIN][FEED][config_entry.entry_id] = manager
diff --git a/homeassistant/components/geonetnz_volcano/sensor.py b/homeassistant/components/geonetnz_volcano/sensor.py
index e78641f99e2..25e02f44308 100644
--- a/homeassistant/components/geonetnz_volcano/sensor.py
+++ b/homeassistant/components/geonetnz_volcano/sensor.py
@@ -5,12 +5,7 @@ import logging
 
 from homeassistant.components.sensor import SensorEntity
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import (
-    ATTR_LATITUDE,
-    ATTR_LONGITUDE,
-    LENGTH_KILOMETERS,
-    LENGTH_MILES,
-)
+from homeassistant.const import ATTR_LATITUDE, ATTR_LONGITUDE, UnitOfLength
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers.dispatcher import async_dispatcher_connect
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
@@ -115,7 +110,9 @@ class GeonetnzVolcanoSensor(SensorEntity):
         if self._unit_system == IMPERIAL_UNITS:
             self._distance = round(
                 DistanceConverter.convert(
-                    feed_entry.distance_to_home, LENGTH_KILOMETERS, LENGTH_MILES
+                    feed_entry.distance_to_home,
+                    UnitOfLength.KILOMETERS,
+                    UnitOfLength.MILES,
                 ),
                 1,
             )
diff --git a/homeassistant/components/ibeacon/sensor.py b/homeassistant/components/ibeacon/sensor.py
index 32c17957b60..c0b9e92decc 100644
--- a/homeassistant/components/ibeacon/sensor.py
+++ b/homeassistant/components/ibeacon/sensor.py
@@ -13,7 +13,7 @@ from homeassistant.components.sensor import (
     SensorStateClass,
 )
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import LENGTH_METERS, SIGNAL_STRENGTH_DECIBELS_MILLIWATT
+from homeassistant.const import SIGNAL_STRENGTH_DECIBELS_MILLIWATT, UnitOfLength
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers.dispatcher import async_dispatcher_connect
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
@@ -58,7 +58,7 @@ SENSOR_DESCRIPTIONS = (
         key="estimated_distance",
         name="Estimated Distance",
         icon="mdi:signal-distance-variant",
-        native_unit_of_measurement=LENGTH_METERS,
+        native_unit_of_measurement=UnitOfLength.METERS,
         value_fn=lambda ibeacon_advertisement: ibeacon_advertisement.distance,
         state_class=SensorStateClass.MEASUREMENT,
         device_class=SensorDeviceClass.DISTANCE,
diff --git a/homeassistant/components/ign_sismologia/geo_location.py b/homeassistant/components/ign_sismologia/geo_location.py
index 1194c58d2ca..e78dafae8ee 100644
--- a/homeassistant/components/ign_sismologia/geo_location.py
+++ b/homeassistant/components/ign_sismologia/geo_location.py
@@ -19,7 +19,7 @@ from homeassistant.const import (
     CONF_RADIUS,
     CONF_SCAN_INTERVAL,
     EVENT_HOMEASSISTANT_START,
-    LENGTH_KILOMETERS,
+    UnitOfLength,
 )
 from homeassistant.core import Event, HomeAssistant, callback
 import homeassistant.helpers.config_validation as cv
@@ -146,7 +146,7 @@ class IgnSismologiaLocationEvent(GeolocationEvent):
     _attr_icon = "mdi:pulse"
     _attr_should_poll = False
     _attr_source = SOURCE
-    _attr_unit_of_measurement = LENGTH_KILOMETERS
+    _attr_unit_of_measurement = UnitOfLength.KILOMETERS
 
     def __init__(
         self, feed_manager: IgnSismologiaFeedEntityManager, external_id: str
diff --git a/homeassistant/components/life360/coordinator.py b/homeassistant/components/life360/coordinator.py
index b7121cc7fdb..5ea64d3f81d 100644
--- a/homeassistant/components/life360/coordinator.py
+++ b/homeassistant/components/life360/coordinator.py
@@ -11,12 +11,7 @@ from typing import Any
 from life360 import Life360, Life360Error, LoginError
 
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import (
-    LENGTH_FEET,
-    LENGTH_KILOMETERS,
-    LENGTH_METERS,
-    LENGTH_MILES,
-)
+from homeassistant.const import UnitOfLength
 from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import ConfigEntryAuthFailed
 from homeassistant.helpers.aiohttp_client import async_get_clientsession
@@ -211,7 +206,7 @@ class Life360DataUpdateCoordinator(DataUpdateCoordinator[Life360Data]):
                 speed = max(0, float(loc["speed"]) * SPEED_FACTOR_MPH)
                 if self._hass.config.units is METRIC_SYSTEM:
                     speed = DistanceConverter.convert(
-                        speed, LENGTH_MILES, LENGTH_KILOMETERS
+                        speed, UnitOfLength.MILES, UnitOfLength.KILOMETERS
                     )
 
                 data.members[member_id] = Life360Member(
@@ -225,7 +220,9 @@ class Life360DataUpdateCoordinator(DataUpdateCoordinator[Life360Data]):
                     # gps_accuracy in meters.
                     round(
                         DistanceConverter.convert(
-                            float(loc["accuracy"]), LENGTH_FEET, LENGTH_METERS
+                            float(loc["accuracy"]),
+                            UnitOfLength.FEET,
+                            UnitOfLength.METERS,
                         )
                     ),
                     dt_util.utc_from_timestamp(int(loc["timestamp"])),
diff --git a/homeassistant/components/mazda/sensor.py b/homeassistant/components/mazda/sensor.py
index 212d646051c..299e8890222 100644
--- a/homeassistant/components/mazda/sensor.py
+++ b/homeassistant/components/mazda/sensor.py
@@ -12,12 +12,7 @@ from homeassistant.components.sensor import (
     SensorStateClass,
 )
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import (
-    LENGTH_KILOMETERS,
-    LENGTH_MILES,
-    PERCENTAGE,
-    PRESSURE_PSI,
-)
+from homeassistant.const import PERCENTAGE, PRESSURE_PSI, UnitOfLength
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 from homeassistant.helpers.typing import StateType
@@ -52,8 +47,8 @@ class MazdaSensorEntityDescription(
 def _get_distance_unit(unit_system: UnitSystem) -> str:
     """Return the distance unit for the given unit system."""
     if unit_system is US_CUSTOMARY_SYSTEM:
-        return LENGTH_MILES
-    return LENGTH_KILOMETERS
+        return UnitOfLength.MILES
+    return UnitOfLength.KILOMETERS
 
 
 def _fuel_remaining_percentage_supported(data):
@@ -109,14 +104,18 @@ def _ev_remaining_range_supported(data):
 def _fuel_distance_remaining_value(data, unit_system):
     """Get the fuel distance remaining value."""
     return round(
-        unit_system.length(data["status"]["fuelDistanceRemainingKm"], LENGTH_KILOMETERS)
+        unit_system.length(
+            data["status"]["fuelDistanceRemainingKm"], UnitOfLength.KILOMETERS
+        )
     )
 
 
 def _odometer_value(data, unit_system):
     """Get the odometer value."""
     # In order to match the behavior of the Mazda mobile app, we always round down
-    return int(unit_system.length(data["status"]["odometerKm"], LENGTH_KILOMETERS))
+    return int(
+        unit_system.length(data["status"]["odometerKm"], UnitOfLength.KILOMETERS)
+    )
 
 
 def _front_left_tire_pressure_value(data, unit_system):
@@ -148,7 +147,7 @@ def _ev_remaining_range_value(data, unit_system):
     """Get the remaining range value."""
     return round(
         unit_system.length(
-            data["evStatus"]["chargeInfo"]["drivingRangeKm"], LENGTH_KILOMETERS
+            data["evStatus"]["chargeInfo"]["drivingRangeKm"], UnitOfLength.KILOMETERS
         )
     )
 
diff --git a/homeassistant/components/met/__init__.py b/homeassistant/components/met/__init__.py
index fc79ac4c60f..64734d5faaf 100644
--- a/homeassistant/components/met/__init__.py
+++ b/homeassistant/components/met/__init__.py
@@ -16,9 +16,8 @@ from homeassistant.const import (
     CONF_LATITUDE,
     CONF_LONGITUDE,
     EVENT_CORE_CONFIG_UPDATE,
-    LENGTH_FEET,
-    LENGTH_METERS,
     Platform,
+    UnitOfLength,
 )
 from homeassistant.core import Event, HomeAssistant
 from homeassistant.exceptions import HomeAssistantError
@@ -161,7 +160,11 @@ class MetWeatherData:
 
         if not self._is_metric:
             elevation = int(
-                round(DistanceConverter.convert(elevation, LENGTH_FEET, LENGTH_METERS))
+                round(
+                    DistanceConverter.convert(
+                        elevation, UnitOfLength.FEET, UnitOfLength.METERS
+                    )
+                )
             )
 
         coordinates = {
diff --git a/homeassistant/components/nissan_leaf/sensor.py b/homeassistant/components/nissan_leaf/sensor.py
index b0da5757db9..5b2f99b997b 100644
--- a/homeassistant/components/nissan_leaf/sensor.py
+++ b/homeassistant/components/nissan_leaf/sensor.py
@@ -6,7 +6,7 @@ import logging
 from voluptuous.validators import Number
 
 from homeassistant.components.sensor import SensorDeviceClass, SensorEntity
-from homeassistant.const import LENGTH_KILOMETERS, LENGTH_MILES, PERCENTAGE
+from homeassistant.const import PERCENTAGE, UnitOfLength
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 from homeassistant.helpers.icon import icon_for_battery_level
@@ -117,7 +117,9 @@ class LeafRangeSensor(LeafEntity, SensorEntity):
             return None
 
         if self.car.hass.config.units is US_CUSTOMARY_SYSTEM or self.car.force_miles:
-            ret = DistanceConverter.convert(ret, LENGTH_KILOMETERS, LENGTH_MILES)
+            ret = DistanceConverter.convert(
+                ret, UnitOfLength.KILOMETERS, UnitOfLength.MILES
+            )
 
         return round(ret)
 
@@ -125,5 +127,5 @@ class LeafRangeSensor(LeafEntity, SensorEntity):
     def native_unit_of_measurement(self) -> str:
         """Battery range unit."""
         if self.car.hass.config.units is US_CUSTOMARY_SYSTEM or self.car.force_miles:
-            return LENGTH_MILES
-        return LENGTH_KILOMETERS
+            return UnitOfLength.MILES
+        return UnitOfLength.KILOMETERS
diff --git a/homeassistant/components/nsw_rural_fire_service_feed/geo_location.py b/homeassistant/components/nsw_rural_fire_service_feed/geo_location.py
index 553f73a128e..3eb598ffd3e 100644
--- a/homeassistant/components/nsw_rural_fire_service_feed/geo_location.py
+++ b/homeassistant/components/nsw_rural_fire_service_feed/geo_location.py
@@ -21,7 +21,7 @@ from homeassistant.const import (
     CONF_SCAN_INTERVAL,
     EVENT_HOMEASSISTANT_START,
     EVENT_HOMEASSISTANT_STOP,
-    LENGTH_KILOMETERS,
+    UnitOfLength,
 )
 from homeassistant.core import Event, HomeAssistant, callback
 from homeassistant.helpers import aiohttp_client, config_validation as cv
@@ -181,7 +181,7 @@ class NswRuralFireServiceLocationEvent(GeolocationEvent):
 
     _attr_should_poll = False
     _attr_source = SOURCE
-    _attr_unit_of_measurement = LENGTH_KILOMETERS
+    _attr_unit_of_measurement = UnitOfLength.KILOMETERS
 
     def __init__(
         self, feed_manager: NswRuralFireServiceFeedEntityManager, external_id: str
diff --git a/homeassistant/components/opengarage/sensor.py b/homeassistant/components/opengarage/sensor.py
index 5e9591e8b6c..f3eb7b2a522 100644
--- a/homeassistant/components/opengarage/sensor.py
+++ b/homeassistant/components/opengarage/sensor.py
@@ -11,10 +11,10 @@ from homeassistant.components.sensor import (
 )
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import (
-    LENGTH_CENTIMETERS,
     PERCENTAGE,
     SIGNAL_STRENGTH_DECIBELS_MILLIWATT,
     TEMP_CELSIUS,
+    UnitOfLength,
 )
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers.entity import EntityCategory
@@ -28,7 +28,7 @@ _LOGGER = logging.getLogger(__name__)
 SENSOR_TYPES: tuple[SensorEntityDescription, ...] = (
     SensorEntityDescription(
         key="dist",
-        native_unit_of_measurement=LENGTH_CENTIMETERS,
+        native_unit_of_measurement=UnitOfLength.CENTIMETERS,
         device_class=SensorDeviceClass.DISTANCE,
         state_class=SensorStateClass.MEASUREMENT,
     ),
diff --git a/homeassistant/components/opensky/sensor.py b/homeassistant/components/opensky/sensor.py
index 4c96d88f321..4c96f2575f0 100644
--- a/homeassistant/components/opensky/sensor.py
+++ b/homeassistant/components/opensky/sensor.py
@@ -14,8 +14,7 @@ from homeassistant.const import (
     CONF_LONGITUDE,
     CONF_NAME,
     CONF_RADIUS,
-    LENGTH_KILOMETERS,
-    LENGTH_METERS,
+    UnitOfLength,
 )
 from homeassistant.core import HomeAssistant
 import homeassistant.helpers.config_validation as cv
@@ -107,7 +106,7 @@ class OpenSkySensor(SensorEntity):
         self._latitude = latitude
         self._longitude = longitude
         self._radius = DistanceConverter.convert(
-            radius, LENGTH_KILOMETERS, LENGTH_METERS
+            radius, UnitOfLength.KILOMETERS, UnitOfLength.METERS
         )
         self._altitude = altitude
         self._state = 0
diff --git a/homeassistant/components/proximity/__init__.py b/homeassistant/components/proximity/__init__.py
index cf99f4fa503..edd50146559 100644
--- a/homeassistant/components/proximity/__init__.py
+++ b/homeassistant/components/proximity/__init__.py
@@ -11,11 +11,7 @@ from homeassistant.const import (
     CONF_DEVICES,
     CONF_UNIT_OF_MEASUREMENT,
     CONF_ZONE,
-    LENGTH_FEET,
-    LENGTH_KILOMETERS,
-    LENGTH_METERS,
-    LENGTH_MILES,
-    LENGTH_YARD,
+    UnitOfLength,
 )
 from homeassistant.core import HomeAssistant, State
 import homeassistant.helpers.config_validation as cv
@@ -42,11 +38,11 @@ DEFAULT_TOLERANCE = 1
 DOMAIN = "proximity"
 
 UNITS = [
-    LENGTH_METERS,
-    LENGTH_KILOMETERS,
-    LENGTH_FEET,
-    LENGTH_YARD,
-    LENGTH_MILES,
+    UnitOfLength.METERS,
+    UnitOfLength.KILOMETERS,
+    UnitOfLength.FEET,
+    UnitOfLength.YARDS,
+    UnitOfLength.MILES,
 ]
 
 ZONE_SCHEMA = vol.Schema(
@@ -236,7 +232,7 @@ class Proximity(Entity):
                 continue
             distances_to_zone[device] = round(
                 DistanceConverter.convert(
-                    proximity, LENGTH_METERS, self.unit_of_measurement
+                    proximity, UnitOfLength.METERS, self.unit_of_measurement
                 ),
                 1,
             )
diff --git a/homeassistant/components/qld_bushfire/geo_location.py b/homeassistant/components/qld_bushfire/geo_location.py
index e754de466d1..fc9fd727615 100644
--- a/homeassistant/components/qld_bushfire/geo_location.py
+++ b/homeassistant/components/qld_bushfire/geo_location.py
@@ -19,7 +19,7 @@ from homeassistant.const import (
     CONF_RADIUS,
     CONF_SCAN_INTERVAL,
     EVENT_HOMEASSISTANT_START,
-    LENGTH_KILOMETERS,
+    UnitOfLength,
 )
 from homeassistant.core import Event, HomeAssistant, callback
 import homeassistant.helpers.config_validation as cv
@@ -154,7 +154,7 @@ class QldBushfireLocationEvent(GeolocationEvent):
     _attr_icon = "mdi:fire"
     _attr_should_poll = False
     _attr_source = SOURCE
-    _attr_unit_of_measurement = LENGTH_KILOMETERS
+    _attr_unit_of_measurement = UnitOfLength.KILOMETERS
 
     def __init__(
         self, feed_manager: QldBushfireFeedEntityManager, external_id: str
diff --git a/homeassistant/components/renault/sensor.py b/homeassistant/components/renault/sensor.py
index 251db26e889..d2204587549 100644
--- a/homeassistant/components/renault/sensor.py
+++ b/homeassistant/components/renault/sensor.py
@@ -24,10 +24,10 @@ from homeassistant.components.sensor import (
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import (
     ENERGY_KILO_WATT_HOUR,
-    LENGTH_KILOMETERS,
     PERCENTAGE,
     TEMP_CELSIUS,
     TIME_MINUTES,
+    UnitOfLength,
     UnitOfPower,
     UnitOfVolume,
 )
@@ -246,7 +246,7 @@ SENSOR_TYPES: tuple[RenaultSensorEntityDescription[Any], ...] = (
         entity_class=RenaultSensor[KamereonVehicleBatteryStatusData],
         icon="mdi:ev-station",
         name="Battery autonomy",
-        native_unit_of_measurement=LENGTH_KILOMETERS,
+        native_unit_of_measurement=UnitOfLength.KILOMETERS,
         state_class=SensorStateClass.MEASUREMENT,
     ),
     RenaultSensorEntityDescription(
@@ -287,7 +287,7 @@ SENSOR_TYPES: tuple[RenaultSensorEntityDescription[Any], ...] = (
         entity_class=RenaultSensor[KamereonVehicleCockpitData],
         icon="mdi:sign-direction",
         name="Mileage",
-        native_unit_of_measurement=LENGTH_KILOMETERS,
+        native_unit_of_measurement=UnitOfLength.KILOMETERS,
         state_class=SensorStateClass.TOTAL_INCREASING,
         value_lambda=_get_rounded_value,
     ),
@@ -299,7 +299,7 @@ SENSOR_TYPES: tuple[RenaultSensorEntityDescription[Any], ...] = (
         entity_class=RenaultSensor[KamereonVehicleCockpitData],
         icon="mdi:gas-station",
         name="Fuel autonomy",
-        native_unit_of_measurement=LENGTH_KILOMETERS,
+        native_unit_of_measurement=UnitOfLength.KILOMETERS,
         state_class=SensorStateClass.MEASUREMENT,
         requires_fuel=True,
         value_lambda=_get_rounded_value,
diff --git a/homeassistant/components/starline/sensor.py b/homeassistant/components/starline/sensor.py
index 5b4954dcb05..d1a654a0590 100644
--- a/homeassistant/components/starline/sensor.py
+++ b/homeassistant/components/starline/sensor.py
@@ -11,9 +11,9 @@ from homeassistant.components.sensor import (
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import (
     ELECTRIC_POTENTIAL_VOLT,
-    LENGTH_KILOMETERS,
     PERCENTAGE,
     TEMP_CELSIUS,
+    UnitOfLength,
     UnitOfVolume,
 )
 from homeassistant.core import HomeAssistant
@@ -80,7 +80,7 @@ SENSOR_TYPES: tuple[StarlineSensorEntityDescription, ...] = (
     StarlineSensorEntityDescription(
         key="mileage",
         name_="Mileage",
-        native_unit_of_measurement=LENGTH_KILOMETERS,
+        native_unit_of_measurement=UnitOfLength.KILOMETERS,
         device_class=SensorDeviceClass.DISTANCE,
         icon="mdi:counter",
     ),
diff --git a/homeassistant/components/subaru/sensor.py b/homeassistant/components/subaru/sensor.py
index e8ca6b41e88..7a74f77b1d5 100644
--- a/homeassistant/components/subaru/sensor.py
+++ b/homeassistant/components/subaru/sensor.py
@@ -13,13 +13,7 @@ from homeassistant.components.sensor import (
     SensorStateClass,
 )
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import (
-    LENGTH_KILOMETERS,
-    LENGTH_MILES,
-    PERCENTAGE,
-    PRESSURE_HPA,
-    UnitOfVolume,
-)
+from homeassistant.const import PERCENTAGE, PRESSURE_HPA, UnitOfLength, UnitOfVolume
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers import entity_registry as er
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
@@ -55,7 +49,7 @@ FUEL_CONSUMPTION_LITERS_PER_HUNDRED_KILOMETERS = "L/100km"
 FUEL_CONSUMPTION_MILES_PER_GALLON = "mi/gal"
 
 L_PER_GAL = VolumeConverter.convert(1, UnitOfVolume.GALLONS, UnitOfVolume.LITERS)
-KM_PER_MI = DistanceConverter.convert(1, LENGTH_MILES, LENGTH_KILOMETERS)
+KM_PER_MI = DistanceConverter.convert(1, UnitOfLength.MILES, UnitOfLength.KILOMETERS)
 
 # Sensor available to "Subaru Safety Plus" subscribers with Gen1 or Gen2 vehicles
 SAFETY_SENSORS = [
@@ -64,7 +58,7 @@ SAFETY_SENSORS = [
         device_class=SensorDeviceClass.DISTANCE,
         icon="mdi:road-variant",
         name="Odometer",
-        native_unit_of_measurement=LENGTH_KILOMETERS,
+        native_unit_of_measurement=UnitOfLength.KILOMETERS,
         state_class=SensorStateClass.TOTAL_INCREASING,
     ),
 ]
@@ -83,7 +77,7 @@ API_GEN_2_SENSORS = [
         device_class=SensorDeviceClass.DISTANCE,
         icon="mdi:gas-station",
         name="Range",
-        native_unit_of_measurement=LENGTH_KILOMETERS,
+        native_unit_of_measurement=UnitOfLength.KILOMETERS,
         state_class=SensorStateClass.MEASUREMENT,
     ),
     SensorEntityDescription(
@@ -123,7 +117,7 @@ EV_SENSORS = [
         device_class=SensorDeviceClass.DISTANCE,
         icon="mdi:ev-station",
         name="EV range",
-        native_unit_of_measurement=LENGTH_MILES,
+        native_unit_of_measurement=UnitOfLength.MILES,
         state_class=SensorStateClass.MEASUREMENT,
     ),
     SensorEntityDescription(
diff --git a/homeassistant/components/tankerkoenig/config_flow.py b/homeassistant/components/tankerkoenig/config_flow.py
index e3d273825a5..be223e95713 100644
--- a/homeassistant/components/tankerkoenig/config_flow.py
+++ b/homeassistant/components/tankerkoenig/config_flow.py
@@ -16,7 +16,7 @@ from homeassistant.const import (
     CONF_NAME,
     CONF_RADIUS,
     CONF_SHOW_ON_MAP,
-    LENGTH_KILOMETERS,
+    UnitOfLength,
 )
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.data_entry_flow import FlowResult
@@ -204,7 +204,7 @@ class FlowHandler(config_entries.ConfigFlow, domain=DOMAIN):
                             min=1.0,
                             max=25,
                             step=0.1,
-                            unit_of_measurement=LENGTH_KILOMETERS,
+                            unit_of_measurement=UnitOfLength.KILOMETERS,
                         ),
                     ),
                 }
diff --git a/homeassistant/components/tasmota/sensor.py b/homeassistant/components/tasmota/sensor.py
index 282ea69d272..94011ca8ba1 100644
--- a/homeassistant/components/tasmota/sensor.py
+++ b/homeassistant/components/tasmota/sensor.py
@@ -22,7 +22,6 @@ from homeassistant.const import (
     ELECTRIC_CURRENT_AMPERE,
     ELECTRIC_POTENTIAL_VOLT,
     ENERGY_KILO_WATT_HOUR,
-    LENGTH_CENTIMETERS,
     LIGHT_LUX,
     PERCENTAGE,
     PRESSURE_HPA,
@@ -36,6 +35,7 @@ from homeassistant.const import (
     TEMP_KELVIN,
     UnitOfApparentPower,
     UnitOfFrequency,
+    UnitOfLength,
     UnitOfMass,
     UnitOfPower,
 )
@@ -217,7 +217,7 @@ SENSOR_UNIT_MAP = {
     hc.ELECTRICAL_VOLT_AMPERE: UnitOfApparentPower.VOLT_AMPERE,
     hc.ENERGY_KILO_WATT_HOUR: ENERGY_KILO_WATT_HOUR,
     hc.FREQUENCY_HERTZ: UnitOfFrequency.HERTZ,
-    hc.LENGTH_CENTIMETERS: LENGTH_CENTIMETERS,
+    hc.LENGTH_CENTIMETERS: UnitOfLength.CENTIMETERS,
     hc.LIGHT_LUX: LIGHT_LUX,
     hc.MASS_KILOGRAMS: UnitOfMass.KILOGRAMS,
     hc.PERCENTAGE: PERCENTAGE,
diff --git a/homeassistant/components/usgs_earthquakes_feed/geo_location.py b/homeassistant/components/usgs_earthquakes_feed/geo_location.py
index c82705174fe..28927baf926 100644
--- a/homeassistant/components/usgs_earthquakes_feed/geo_location.py
+++ b/homeassistant/components/usgs_earthquakes_feed/geo_location.py
@@ -20,7 +20,7 @@ from homeassistant.const import (
     CONF_RADIUS,
     CONF_SCAN_INTERVAL,
     EVENT_HOMEASSISTANT_START,
-    LENGTH_KILOMETERS,
+    UnitOfLength,
 )
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers import aiohttp_client
@@ -48,7 +48,7 @@ CONF_MINIMUM_MAGNITUDE = "minimum_magnitude"
 
 DEFAULT_MINIMUM_MAGNITUDE = 0.0
 DEFAULT_RADIUS_IN_KM = 50.0
-DEFAULT_UNIT_OF_MEASUREMENT = LENGTH_KILOMETERS
+DEFAULT_UNIT_OF_MEASUREMENT = UnitOfLength.KILOMETERS
 
 SCAN_INTERVAL = timedelta(minutes=5)
 
diff --git a/homeassistant/components/wallbox/sensor.py b/homeassistant/components/wallbox/sensor.py
index 3c2c5171a70..9e5b17a3111 100644
--- a/homeassistant/components/wallbox/sensor.py
+++ b/homeassistant/components/wallbox/sensor.py
@@ -15,8 +15,8 @@ from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import (
     ELECTRIC_CURRENT_AMPERE,
     ENERGY_KILO_WATT_HOUR,
-    LENGTH_KILOMETERS,
     PERCENTAGE,
+    UnitOfLength,
     UnitOfPower,
 )
 from homeassistant.core import HomeAssistant
@@ -86,7 +86,7 @@ SENSOR_TYPES: dict[str, WallboxSensorEntityDescription] = {
         icon="mdi:map-marker-distance",
         name="Added Range",
         precision=0,
-        native_unit_of_measurement=LENGTH_KILOMETERS,
+        native_unit_of_measurement=UnitOfLength.KILOMETERS,
         device_class=SensorDeviceClass.DISTANCE,
         state_class=SensorStateClass.TOTAL_INCREASING,
     ),
diff --git a/homeassistant/components/waze_travel_time/sensor.py b/homeassistant/components/waze_travel_time/sensor.py
index c8d3e308435..089d98de905 100644
--- a/homeassistant/components/waze_travel_time/sensor.py
+++ b/homeassistant/components/waze_travel_time/sensor.py
@@ -16,9 +16,8 @@ from homeassistant.const import (
     CONF_NAME,
     CONF_REGION,
     EVENT_HOMEASSISTANT_STARTED,
-    LENGTH_KILOMETERS,
-    LENGTH_MILES,
     TIME_MINUTES,
+    UnitOfLength,
 )
 from homeassistant.core import CoreState, HomeAssistant
 from homeassistant.helpers.device_registry import DeviceEntryType
@@ -210,7 +209,7 @@ class WazeTravelTimeData:
                 if units == IMPERIAL_UNITS:
                     # Convert to miles.
                     self.distance = DistanceConverter.convert(
-                        distance, LENGTH_KILOMETERS, LENGTH_MILES
+                        distance, UnitOfLength.KILOMETERS, UnitOfLength.MILES
                     )
                 else:
                     self.distance = distance