diff --git a/homeassistant/components/modbus/__init__.py b/homeassistant/components/modbus/__init__.py
index b9765f5e5ee..d4b70796c1a 100644
--- a/homeassistant/components/modbus/__init__.py
+++ b/homeassistant/components/modbus/__init__.py
@@ -2,7 +2,6 @@
 from __future__ import annotations
 
 import logging
-from typing import Any
 
 import voluptuous as vol
 
@@ -99,71 +98,20 @@ from .const import (
     DEFAULT_SCAN_INTERVAL,
     DEFAULT_STRUCTURE_PREFIX,
     DEFAULT_TEMP_UNIT,
-    MINIMUM_SCAN_INTERVAL,
     MODBUS_DOMAIN as DOMAIN,
-    PLATFORMS,
 )
 from .modbus import async_modbus_setup
-from .validators import sensor_schema_validator
+from .validators import (
+    number_validator,
+    scan_interval_validator,
+    sensor_schema_validator,
+)
 
 _LOGGER = logging.getLogger(__name__)
 
 BASE_SCHEMA = vol.Schema({vol.Optional(CONF_NAME, default=DEFAULT_HUB): cv.string})
 
 
-def number(value: Any) -> int | float:
-    """Coerce a value to number without losing precision."""
-    if isinstance(value, int):
-        return value
-    if isinstance(value, float):
-        return value
-
-    try:
-        value = int(value)
-        return value
-    except (TypeError, ValueError):
-        pass
-    try:
-        value = float(value)
-        return value
-    except (TypeError, ValueError) as err:
-        raise vol.Invalid(f"invalid number {value}") from err
-
-
-def control_scan_interval(config: dict) -> dict:
-    """Control scan_interval."""
-    for hub in config:
-        minimum_scan_interval = DEFAULT_SCAN_INTERVAL
-        for component, conf_key in PLATFORMS:
-            if conf_key not in hub:
-                continue
-
-            for entry in hub[conf_key]:
-                scan_interval = entry.get(CONF_SCAN_INTERVAL, DEFAULT_SCAN_INTERVAL)
-                if scan_interval < MINIMUM_SCAN_INTERVAL:
-                    if scan_interval == 0:
-                        continue
-                    _LOGGER.warning(
-                        "%s %s scan_interval(%d) is adjusted to minimum(%d)",
-                        component,
-                        entry.get(CONF_NAME),
-                        scan_interval,
-                        MINIMUM_SCAN_INTERVAL,
-                    )
-                    scan_interval = MINIMUM_SCAN_INTERVAL
-                entry[CONF_SCAN_INTERVAL] = scan_interval
-                minimum_scan_interval = min(scan_interval, minimum_scan_interval)
-        if CONF_TIMEOUT in hub and hub[CONF_TIMEOUT] > minimum_scan_interval - 1:
-            _LOGGER.warning(
-                "Modbus %s timeout(%d) is adjusted(%d) due to scan_interval",
-                hub.get(CONF_NAME, ""),
-                hub[CONF_TIMEOUT],
-                minimum_scan_interval - 1,
-            )
-        hub[CONF_TIMEOUT] = minimum_scan_interval - 1
-    return config
-
-
 BASE_COMPONENT_SCHEMA = vol.Schema(
     {
         vol.Required(CONF_NAME): cv.string,
@@ -311,7 +259,7 @@ SENSOR_SCHEMA = BASE_COMPONENT_SCHEMA.extend(
             ]
         ),
         vol.Optional(CONF_DEVICE_CLASS): SENSOR_DEVICE_CLASSES_SCHEMA,
-        vol.Optional(CONF_OFFSET, default=0): number,
+        vol.Optional(CONF_OFFSET, default=0): number_validator,
         vol.Optional(CONF_PRECISION, default=0): cv.positive_int,
         vol.Optional(CONF_INPUT_TYPE, default=CALL_TYPE_REGISTER_HOLDING): vol.In(
             [CALL_TYPE_REGISTER_HOLDING, CALL_TYPE_REGISTER_INPUT]
@@ -320,7 +268,7 @@ SENSOR_SCHEMA = BASE_COMPONENT_SCHEMA.extend(
         vol.Optional(CONF_SWAP, default=CONF_SWAP_NONE): vol.In(
             [CONF_SWAP_NONE, CONF_SWAP_BYTE, CONF_SWAP_WORD, CONF_SWAP_WORD_BYTE]
         ),
-        vol.Optional(CONF_SCALE, default=1): number,
+        vol.Optional(CONF_SCALE, default=1): number_validator,
         vol.Optional(CONF_STRUCTURE): cv.string,
         vol.Optional(CONF_UNIT_OF_MEASUREMENT): cv.string,
     }
@@ -380,7 +328,7 @@ CONFIG_SCHEMA = vol.Schema(
     {
         DOMAIN: vol.All(
             cv.ensure_list,
-            control_scan_interval,
+            scan_interval_validator,
             [
                 vol.Any(SERIAL_SCHEMA, ETHERNET_SCHEMA),
             ],
diff --git a/homeassistant/components/modbus/validators.py b/homeassistant/components/modbus/validators.py
index cd0c4524c74..0f376609de5 100644
--- a/homeassistant/components/modbus/validators.py
+++ b/homeassistant/components/modbus/validators.py
@@ -1,10 +1,19 @@
 """Validate Modbus configuration."""
+from __future__ import annotations
+
 import logging
 import struct
+from typing import Any
 
-from voluptuous import Invalid
+import voluptuous as vol
 
-from homeassistant.const import CONF_COUNT, CONF_NAME, CONF_STRUCTURE
+from homeassistant.const import (
+    CONF_COUNT,
+    CONF_NAME,
+    CONF_SCAN_INTERVAL,
+    CONF_STRUCTURE,
+    CONF_TIMEOUT,
+)
 
 from .const import (
     CONF_DATA_TYPE,
@@ -15,7 +24,10 @@ from .const import (
     CONF_SWAP_WORD,
     DATA_TYPE_CUSTOM,
     DATA_TYPE_STRING,
+    DEFAULT_SCAN_INTERVAL,
     DEFAULT_STRUCT_FORMAT,
+    MINIMUM_SCAN_INTERVAL,
+    PLATFORMS,
 )
 
 _LOGGER = logging.getLogger(__name__)
@@ -32,14 +44,14 @@ def sensor_schema_validator(config):
                 f">{DEFAULT_STRUCT_FORMAT[config[CONF_DATA_TYPE]][config[CONF_COUNT]]}"
             )
         except KeyError:
-            raise Invalid(
+            raise vol.Invalid(
                 f"Unable to detect data type for {config[CONF_NAME]} sensor, try a custom type"
             ) from KeyError
     else:
         structure = config.get(CONF_STRUCTURE)
 
     if not structure:
-        raise Invalid(
+        raise vol.Invalid(
             f"Error in sensor {config[CONF_NAME]}. The `{CONF_STRUCTURE}` field can not be empty "
             f"if the parameter `{CONF_DATA_TYPE}` is set to the `{DATA_TYPE_CUSTOM}`"
         )
@@ -47,13 +59,13 @@ def sensor_schema_validator(config):
     try:
         size = struct.calcsize(structure)
     except struct.error as err:
-        raise Invalid(
+        raise vol.Invalid(
             f"Error in sensor {config[CONF_NAME]} structure: {str(err)}"
         ) from err
 
     bytecount = config[CONF_COUNT] * 2
     if bytecount != size:
-        raise Invalid(
+        raise vol.Invalid(
             f"Structure request {size} bytes, "
             f"but {config[CONF_COUNT]} registers have a size of {bytecount} bytes"
         )
@@ -73,7 +85,7 @@ def sensor_schema_validator(config):
         else:  # CONF_SWAP_WORD_BYTE, CONF_SWAP_WORD
             regs_needed = 2
         if config[CONF_COUNT] < regs_needed or (config[CONF_COUNT] % regs_needed) != 0:
-            raise Invalid(
+            raise vol.Invalid(
                 f"Error in sensor {config[CONF_NAME]} swap({swap_type}) "
                 f"not possible due to the registers "
                 f"count: {config[CONF_COUNT]}, needed: {regs_needed}"
@@ -84,3 +96,56 @@ def sensor_schema_validator(config):
         CONF_STRUCTURE: structure,
         CONF_SWAP: swap_type,
     }
+
+
+def number_validator(value: Any) -> int | float:
+    """Coerce a value to number without losing precision."""
+    if isinstance(value, int):
+        return value
+    if isinstance(value, float):
+        return value
+
+    try:
+        value = int(value)
+        return value
+    except (TypeError, ValueError):
+        pass
+    try:
+        value = float(value)
+        return value
+    except (TypeError, ValueError) as err:
+        raise vol.Invalid(f"invalid number {value}") from err
+
+
+def scan_interval_validator(config: dict) -> dict:
+    """Control scan_interval."""
+    for hub in config:
+        minimum_scan_interval = DEFAULT_SCAN_INTERVAL
+        for component, conf_key in PLATFORMS:
+            if conf_key not in hub:
+                continue
+
+            for entry in hub[conf_key]:
+                scan_interval = entry.get(CONF_SCAN_INTERVAL, DEFAULT_SCAN_INTERVAL)
+                if scan_interval < MINIMUM_SCAN_INTERVAL:
+                    if scan_interval == 0:
+                        continue
+                    _LOGGER.warning(
+                        "%s %s scan_interval(%d) is adjusted to minimum(%d)",
+                        component,
+                        entry.get(CONF_NAME),
+                        scan_interval,
+                        MINIMUM_SCAN_INTERVAL,
+                    )
+                    scan_interval = MINIMUM_SCAN_INTERVAL
+                entry[CONF_SCAN_INTERVAL] = scan_interval
+                minimum_scan_interval = min(scan_interval, minimum_scan_interval)
+        if CONF_TIMEOUT in hub and hub[CONF_TIMEOUT] > minimum_scan_interval - 1:
+            _LOGGER.warning(
+                "Modbus %s timeout(%d) is adjusted(%d) due to scan_interval",
+                hub.get(CONF_NAME, ""),
+                hub[CONF_TIMEOUT],
+                minimum_scan_interval - 1,
+            )
+        hub[CONF_TIMEOUT] = minimum_scan_interval - 1
+    return config
diff --git a/tests/components/modbus/test_init.py b/tests/components/modbus/test_init.py
index 0819e5a3e89..8e45ee06976 100644
--- a/tests/components/modbus/test_init.py
+++ b/tests/components/modbus/test_init.py
@@ -19,7 +19,6 @@ import pytest
 import voluptuous as vol
 
 from homeassistant.components.binary_sensor import DOMAIN as BINARY_SENSOR_DOMAIN
-from homeassistant.components.modbus import number
 from homeassistant.components.modbus.const import (
     ATTR_ADDRESS,
     ATTR_HUB,
@@ -44,6 +43,7 @@ from homeassistant.components.modbus.const import (
     SERVICE_WRITE_COIL,
     SERVICE_WRITE_REGISTER,
 )
+from homeassistant.components.modbus.validators import number_validator
 from homeassistant.components.sensor import DOMAIN as SENSOR_DOMAIN
 from homeassistant.const import (
     CONF_ADDRESS,
@@ -85,13 +85,13 @@ async def test_number_validator():
         ("-15", int),
         ("-15.1", float),
     ]:
-        assert isinstance(number(value), value_type)
+        assert isinstance(number_validator(value), value_type)
 
     try:
-        number("x15.1")
+        number_validator("x15.1")
     except (vol.Invalid):
         return
-    pytest.fail("Number not throwing exception")
+    pytest.fail("Number_validator not throwing exception")
 
 
 @pytest.mark.parametrize(