diff --git a/erpnext/patches.txt b/erpnext/patches.txt
index 68cdf2dca17..e00711ccf42 100644
--- a/erpnext/patches.txt
+++ b/erpnext/patches.txt
@@ -506,3 +506,4 @@ erpnext.patches.v16_0.rename_secondary_item_type_field
 erpnext.patches.v16_0.append_fieldname_to_pos_search_fields
 erpnext.patches.v16_0.set_secondary_item_valuation_type
 erpnext.patches.v16_0.add_transaction_roles_to_sms_settings
+erpnext.patches.v16_0.recalculate_holiday_list_totals
diff --git a/erpnext/patches/v16_0/recalculate_holiday_list_totals.py b/erpnext/patches/v16_0/recalculate_holiday_list_totals.py
new file mode 100644
index 00000000000..3df47194530
--- /dev/null
+++ b/erpnext/patches/v16_0/recalculate_holiday_list_totals.py
@@ -0,0 +1,18 @@
+import frappe
+from frappe.query_builder import Case
+from frappe.query_builder.functions import Coalesce, Sum
+
+
+def execute():
+	holiday_list = frappe.qb.DocType("Holiday List")
+	holiday = frappe.qb.DocType("Holiday")
+	total_holidays = (
+		frappe.qb.from_(holiday)
+		.select(Sum(Case().when(holiday.is_half_day == 1, 0.5).else_(1)))
+		.where(
+			(holiday.parent == holiday_list.name)
+			& (holiday.parenttype == "Holiday List")
+			& (holiday.parentfield == "holidays")
+		)
+	)
+	frappe.qb.update(holiday_list).set(holiday_list.total_holidays, Coalesce(total_holidays, 0)).run()
diff --git a/erpnext/setup/doctype/holiday_list/holiday_list.js b/erpnext/setup/doctype/holiday_list/holiday_list.js
index 1f95a73c242..3dabb525625 100644
--- a/erpnext/setup/doctype/holiday_list/holiday_list.js
+++ b/erpnext/setup/doctype/holiday_list/holiday_list.js
@@ -1,11 +1,18 @@
 // Copyright (c) 2016, Frappe Technologies Pvt. Ltd. and contributors
 // For license information, please see license.txt
 
+function update_total_holidays(frm) {
+	let total_holidays = 0;
+	for (const holiday of frm.doc.holidays || []) {
+		total_holidays += holiday.is_half_day ? 0.5 : 1;
+	}
+	frm.doc.total_holidays = total_holidays;
+	frm.refresh_field("total_holidays");
+}
+
 frappe.ui.form.on("Holiday List", {
 	refresh: function (frm) {
-		if (frm.doc.holidays) {
-			frm.set_value("total_holidays", frm.doc.holidays.length);
-		}
+		update_total_holidays(frm);
 
 		frm.call("get_supported_countries").then((r) => {
 			frm.subdivisions_by_country = r.message.subdivisions_by_country;
@@ -43,6 +50,18 @@ frappe.ui.form.on("Holiday List", {
 	},
 });
 
+frappe.ui.form.on("Holiday", {
+	holidays_add: function (frm) {
+		update_total_holidays(frm);
+	},
+	holidays_remove: function (frm) {
+		update_total_holidays(frm);
+	},
+	is_half_day: function (frm) {
+		update_total_holidays(frm);
+	},
+});
+
 frappe.tour["Holiday List"] = [
 	{
 		fieldname: "holiday_list_name",
diff --git a/erpnext/setup/doctype/holiday_list/holiday_list.json b/erpnext/setup/doctype/holiday_list/holiday_list.json
index fb4feba4872..c7ab6f00e5c 100644
--- a/erpnext/setup/doctype/holiday_list/holiday_list.json
+++ b/erpnext/setup/doctype/holiday_list/holiday_list.json
@@ -58,9 +58,10 @@
   },
   {
    "fieldname": "total_holidays",
-   "fieldtype": "Int",
+   "fieldtype": "Float",
    "in_list_view": 1,
    "label": "Total Holidays",
+   "precision": "1",
    "read_only": 1
   },
   {
diff --git a/erpnext/setup/doctype/holiday_list/holiday_list.py b/erpnext/setup/doctype/holiday_list/holiday_list.py
index 74be12fd4a9..f544f2fc37f 100644
--- a/erpnext/setup/doctype/holiday_list/holiday_list.py
+++ b/erpnext/setup/doctype/holiday_list/holiday_list.py
@@ -8,7 +8,7 @@ from datetime import date
 import frappe
 from frappe import _, throw
 from frappe.model.document import Document
-from frappe.utils import formatdate, getdate, today
+from frappe.utils import cint, formatdate, getdate, today
 
 
 class OverlapError(frappe.ValidationError):
@@ -34,7 +34,7 @@ class HolidayList(Document):
 		is_half_day: DF.Check
 		subdivision: DF.Autocomplete | None
 		to_date: DF.Date
-		total_holidays: DF.Int
+		total_holidays: DF.Float
 		weekly_off: DF.Literal[
 			"", "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"
 		]
@@ -42,10 +42,13 @@ class HolidayList(Document):
 
 	def validate(self):
 		self.validate_days()
-		self.total_holidays = len(self.holidays)
+		self.update_total_holidays()
 		self.validate_duplicate_date()
 		self.sort_holidays()
 
+	def update_total_holidays(self):
+		self.total_holidays = sum(0.5 if cint(holiday.is_half_day) else 1 for holiday in self.holidays)
+
 	@frappe.whitelist()
 	def get_weekly_off_dates(self):
 		if not self.weekly_off:
@@ -67,6 +70,8 @@ class HolidayList(Document):
 				},
 			)
 
+		self.update_total_holidays()
+
 	@frappe.whitelist()
 	def get_supported_countries(self):
 		from holidays.utils import list_supported_countries
@@ -108,6 +113,8 @@ class HolidayList(Document):
 				"holidays", {"description": holiday_name, "holiday_date": holiday_date, "weekly_off": 0}
 			)
 
+		self.update_total_holidays()
+
 	def sort_holidays(self):
 		self.holidays.sort(key=lambda x: getdate(x.holiday_date))
 		for i in range(len(self.holidays)):
@@ -153,6 +160,7 @@ class HolidayList(Document):
 	@frappe.whitelist()
 	def clear_table(self):
 		self.set("holidays", [])
+		self.update_total_holidays()
 
 	def validate_duplicate_date(self):
 		unique_dates = []
diff --git a/erpnext/setup/doctype/holiday_list/test_holiday_list.py b/erpnext/setup/doctype/holiday_list/test_holiday_list.py
index 342918b8d64..91924894372 100644
--- a/erpnext/setup/doctype/holiday_list/test_holiday_list.py
+++ b/erpnext/setup/doctype/holiday_list/test_holiday_list.py
@@ -5,7 +5,7 @@ from contextlib import contextmanager
 from datetime import date, timedelta
 
 import frappe
-from frappe.utils import getdate
+from frappe.utils import get_datetime, getdate
 
 from erpnext.setup.doctype.holiday_list.holiday_list import local_country_name
 from erpnext.tests.utils import ERPNextTestSuite
@@ -46,6 +46,94 @@ class TestHolidayList(ERPNextTestSuite):
 		self.assertIn(date(2023, 2, 26), holidays)
 		self.assertNotIn(date(2023, 3, 5), holidays)
 
+	def test_total_holidays_includes_half_days(self):
+		holiday_list = make_holiday_list(
+			"test_half_day_holiday_list",
+			from_date="2023-01-01",
+			to_date="2023-01-03",
+			holiday_dates=[
+				{"holiday_date": "2023-01-01", "description": "Full-day holiday"},
+				{
+					"holiday_date": "2023-01-02",
+					"description": "Half-day holiday",
+					"is_half_day": 1,
+				},
+			],
+		)
+
+		self.assertEqual(holiday_list.total_holidays, 1.5)
+		self.assertEqual(frappe.db.get_value("Holiday List", holiday_list.name, "total_holidays"), 1.5)
+
+	def test_weekly_off_updates_total_without_saving(self):
+		holiday_list = frappe.new_doc("Holiday List")
+		holiday_list.from_date = "2023-01-01"
+		holiday_list.to_date = "2023-01-14"
+		holiday_list.weekly_off = "Saturday"
+		holiday_list.is_half_day = 1
+		holiday_list.append("holidays", {"holiday_date": "2023-01-01", "description": "Full day"})
+
+		holiday_list.get_weekly_off_dates()
+		self.assertEqual(len(holiday_list.holidays), 3)
+		self.assertEqual(holiday_list.total_holidays, 2)
+
+		holiday_list.get_weekly_off_dates()
+		self.assertEqual(len(holiday_list.holidays), 3)
+		self.assertEqual(holiday_list.total_holidays, 2)
+
+		holiday_list.clear_table()
+		self.assertEqual(holiday_list.holidays, [])
+		self.assertEqual(holiday_list.total_holidays, 0)
+
+	def test_local_holidays_updates_total_without_saving(self):
+		holiday_list = frappe.new_doc("Holiday List")
+		holiday_list.from_date = "2023-01-01"
+		holiday_list.to_date = "2023-01-02"
+		holiday_list.country = "DE"
+		holiday_list.append(
+			"holidays", {"holiday_date": "2023-01-02", "description": "Half day", "is_half_day": 1}
+		)
+
+		holiday_list.get_local_holidays()
+		self.assertEqual(len(holiday_list.holidays), 2)
+		self.assertEqual(holiday_list.total_holidays, 1.5)
+
+		holiday_list.get_local_holidays()
+		self.assertEqual(len(holiday_list.holidays), 2)
+		self.assertEqual(holiday_list.total_holidays, 1.5)
+
+	def test_recalculate_existing_holiday_list_totals(self):
+		from erpnext.patches.v16_0.recalculate_holiday_list_totals import execute
+
+		cases = (("mixed", [0, 1], 1.5), ("half", [1, 1, 1], 1.5), ("full", [0, 0], 2), ("empty", [], 0))
+		holiday_lists = []
+		for name, half_days, expected in cases:
+			holiday_list = make_holiday_list(
+				f"test_backfill_holidays_{name}",
+				from_date="2023-01-01",
+				to_date="2023-01-03",
+				holiday_dates=[
+					{
+						"holiday_date": date(2023, 1, idx),
+						"description": "Test holiday",
+						"is_half_day": is_half_day,
+					}
+					for idx, is_half_day in enumerate(half_days, start=1)
+				],
+			)
+			# Simulate totals persisted by the old controller, including a stale empty list.
+			holiday_list.db_set("total_holidays", len(half_days) or 1, update_modified=False)
+			holiday_lists.append((holiday_list, expected))
+
+		for _ in range(2):
+			execute()
+			for holiday_list, expected in holiday_lists:
+				with self.subTest(holiday_list=holiday_list.name):
+					total, modified = frappe.db.get_value(
+						"Holiday List", holiday_list.name, ["total_holidays", "modified"]
+					)
+					self.assertEqual(total, expected)
+					self.assertEqual(modified, get_datetime(holiday_list.modified))
+
 	def test_local_holidays(self):
 		holiday_list = frappe.new_doc("Holiday List")
 		holiday_list.from_date = "2022-01-01"