diff --git a/frappe/desk/query_report.py b/frappe/desk/query_report.py
index b344763916..f5f50b14fe 100644
--- a/frappe/desk/query_report.py
+++ b/frappe/desk/query_report.py
@@ -352,14 +352,10 @@ def export_query():
 			)
 			return
 
-		columns = get_columns_dict(data.columns)
-
 		from frappe.utils.xlsxutils import make_xlsx
 
-		data["result"] = handle_duration_fieldtype_values(
-			data.get("result"), data.get("columns")
-		)
-		xlsx_data, column_widths = build_xlsx_data(columns, data, visible_idx, include_indentation)
+		format_duration_fields(data)
+		xlsx_data, column_widths = build_xlsx_data(data, visible_idx, include_indentation)
 		xlsx_file = make_xlsx(xlsx_data, "Query Report", column_widths=column_widths)
 
 		frappe.response["filename"] = report_name + ".xlsx"
@@ -367,39 +363,18 @@ def export_query():
 		frappe.response["type"] = "binary"
 
 
-def handle_duration_fieldtype_values(result, columns):
-	for i, col in enumerate(columns):
-		fieldtype = None
-		if isinstance(col, str):
-			col = col.split(":")
-			if len(col) > 1:
-				if col[1]:
-					fieldtype = col[1]
-					if "/" in fieldtype:
-						fieldtype, options = fieldtype.split("/")
-				else:
-					fieldtype = "Data"
-		else:
-			fieldtype = col.get("fieldtype")
-
-		if fieldtype == "Duration":
-			for entry in range(0, len(result)):
-				row = result[entry]
-				if isinstance(row, dict):
-					val_in_seconds = row[col.fieldname]
-					if val_in_seconds:
-						duration_val = format_duration(val_in_seconds)
-						row[col.fieldname] = duration_val
-				else:
-					val_in_seconds = row[i]
-					if val_in_seconds:
-						duration_val = format_duration(val_in_seconds)
-						row[i] = duration_val
+def format_duration_fields(data: frappe._dict) -> None:
+	for i, col in enumerate(data.columns):
+		if col.get("fieldtype") != "Duration":
+			continue
 
-	return result
+		for row in data.result:
+			index = col.fieldname if isinstance(row, dict) else i
+			if row[index]:
+				row[index] = format_duration(row[index])
 
 
-def build_xlsx_data(columns, data, visible_idx, include_indentation, ignore_visible_idx=False):
+def build_xlsx_data(data, visible_idx, include_indentation, ignore_visible_idx=False):
 	result = [[]]
 	column_widths = []
 
diff --git a/frappe/email/doctype/auto_email_report/auto_email_report.py b/frappe/email/doctype/auto_email_report/auto_email_report.py
index 682f0df7cf..5ffde0c37b 100644
--- a/frappe/email/doctype/auto_email_report/auto_email_report.py
+++ b/frappe/email/doctype/auto_email_report/auto_email_report.py
@@ -104,7 +104,7 @@ class AutoEmailReport(Document):
 			report_data['columns'] = columns
 			report_data['result'] = data
 
-			xlsx_data, column_widths = build_xlsx_data(columns, report_data, [], 1, ignore_visible_idx=True)
+			xlsx_data, column_widths = build_xlsx_data(report_data, [], 1, ignore_visible_idx=True)
 			xlsx_file = make_xlsx(xlsx_data, "Auto Email Report", column_widths=column_widths)
 			return xlsx_file.getvalue()
 
@@ -113,7 +113,7 @@ class AutoEmailReport(Document):
 			report_data['columns'] = columns
 			report_data['result'] = data
 
-			xlsx_data, column_widths = build_xlsx_data(columns, report_data, [], 1, ignore_visible_idx=True)
+			xlsx_data, column_widths = build_xlsx_data(report_data, [], 1, ignore_visible_idx=True)
 			return to_csv(xlsx_data)
 
 		else:
diff --git a/frappe/tests/test_query_report.py b/frappe/tests/test_query_report.py
index 656894fc9b..2117bc830e 100644
--- a/frappe/tests/test_query_report.py
+++ b/frappe/tests/test_query_report.py
@@ -12,37 +12,30 @@ class TestQueryReport(unittest.TestCase):
 	def test_xlsx_data_with_multiple_datatypes(self):
 		"""Test exporting report using rows with multiple datatypes (list, dict)"""
 
-		# Describe the columns
-		columns = {
-			0: {"label": "Column A", "fieldname": "column_a"},
-			1: {"label": "Column B", "fieldname": "column_b"},
-			2: {"label": "Column C", "fieldname": "column_c"}
-		}
-
 		# Create mock data
 		data = frappe._dict()
 		data.columns = [
-			{"label": "Column A", "fieldname": "column_a"},
-			{"label": "Column B", "fieldname": "column_b", "width": 150},
-			{"label": "Column C", "fieldname": "column_c", "width": 100}
+			{"label": "Column A", "fieldname": "column_a", "fieldtype": "Float"},
+			{"label": "Column B", "fieldname": "column_b", "width": 100, "fieldtype": "Float"},
+			{"label": "Column C", "fieldname": "column_c", "width": 150, "fieldtype": "Duration"},
 		]
 		data.result = [
-			[1.0, 3.0, 5.5],
-			{"column_a": 22.1, "column_b": 21.8, "column_c": 30.2},
-			{"column_b": 5.1, "column_c": 9.5, "column_a": 11.1},
-			[3.0, 1.5, 7.5],
+			[1.0, 3.0, 600],
+			{"column_a": 22.1, "column_b": 21.8, "column_c": 86412},
+			{"column_b": 5.1, "column_c": 53234, "column_a": 11.1},
+			[3.0, 1.5, 333],
 		]
 
 		# Define the visible rows
 		visible_idx = [0, 2, 3]
 
 		# Build the result
-		xlsx_data, column_widths = build_xlsx_data(columns, data, visible_idx, include_indentation=0)
+		xlsx_data, column_widths = build_xlsx_data(data, visible_idx, include_indentation=0)
 
 		self.assertEqual(type(xlsx_data), list)
 		self.assertEqual(len(xlsx_data), 4)  # columns + data
 		# column widths are divided by 10 to match the scale that is supported by openpyxl
-		self.assertListEqual(column_widths, [0, 15, 10])
+		self.assertListEqual(column_widths, [0, 10, 15])
 
 		for row in xlsx_data:
 			self.assertEqual(type(row), list)