diff --git a/erpnext/manufacturing/report/material_requirements_planning_report/material_requirements_planning_report.py b/erpnext/manufacturing/report/material_requirements_planning_report/material_requirements_planning_report.py
index ee93cdc27e5..9a17948362a 100644
--- a/erpnext/manufacturing/report/material_requirements_planning_report/material_requirements_planning_report.py
+++ b/erpnext/manufacturing/report/material_requirements_planning_report/material_requirements_planning_report.py
@@ -454,7 +454,6 @@ class MaterialRequirementsPlanningReport:
 					row[field] = rm_details.get(field)
 
 			self.update_required_qty(row)
-			row.release_date = add_days(row.delivery_date, row.lead_time * -1)
 			if i != 0:
 				data.append(frappe._dict({}))
 
@@ -463,7 +462,15 @@ class MaterialRequirementsPlanningReport:
 			if rm_details.raw_materials:
 				row.capacity = get_item_capacity(row.item_code, self.filters.bucket_size)
 				row.type_of_material = "Manufacture"
+				if row.lead_time and row.required_qty:
+					row.lead_time = math.ceil(row.required_qty / row.lead_time)
+				elif not row.required_qty:
+					row.lead_time = 0
 
+			if not row.lead_time and rm_details.raw_materials:
+				row.lead_time = self.get_lead_time_from_raw_materials(rm_details.raw_materials)
+
+			row.release_date = add_days(row.delivery_date, row.lead_time * -1)
 			data.append(row)
 			if rm_details.raw_materials:
 				self.update_rm_details(
@@ -472,6 +479,15 @@ class MaterialRequirementsPlanningReport:
 
 		return data
 
+	def get_lead_time_from_raw_materials(self, raw_materials):
+		lead_time = 0
+		for material in raw_materials:
+			lead_time += math.ceil(material.lead_time)
+			if material.raw_materials:
+				lead_time += self.get_lead_time_from_raw_materials(material.raw_materials)
+
+		return lead_time
+
 	def add_non_planned_so(self, row):
 		if so_details := self._so_details.get((row.item_code, row.delivery_date)):
 			row.adhoc_qty = so_details.qty
@@ -1199,8 +1215,10 @@ def get_item_lead_time(item_code, type_of_material):
 	if type_of_material == "Manufacture":
 		query = query.select(
 			Case()
-			.when(doctype.manufacturing_time_in_mins.isnull(), 0)
-			.else_(doctype.manufacturing_time_in_mins / 1440 + doctype.buffer_time)
+			.when(
+				(doctype.manufacturing_time_in_mins.isnull() | (doctype.manufacturing_time_in_mins <= 0)), 0
+			)
+			.else_(1440 / doctype.manufacturing_time_in_mins + doctype.buffer_time)
 			.as_("lead_time")
 		)
 	else:
diff --git a/erpnext/workspace_sidebar/manufacturing.json b/erpnext/workspace_sidebar/manufacturing.json
index 3c2a4a3dd9d..3570184eb5e 100644
--- a/erpnext/workspace_sidebar/manufacturing.json
+++ b/erpnext/workspace_sidebar/manufacturing.json
@@ -89,6 +89,18 @@
    "show_arrow": 0,
    "type": "Section Break"
   },
+  {
+   "child": 1,
+   "collapsible": 1,
+   "icon": "",
+   "indent": 0,
+   "keep_closed": 0,
+   "label": "Item Lead Time",
+   "link_to": "Item Lead Time",
+   "link_type": "DocType",
+   "show_arrow": 0,
+   "type": "Link"
+  },
   {
    "child": 1,
    "collapsible": 1,
@@ -425,7 +437,7 @@
    "type": "Link"
   }
  ],
- "modified": "2026-01-10 00:06:13.058137",
+ "modified": "2026-01-29 16:41:40.416652",
  "modified_by": "Administrator",
  "module": "Manufacturing",
  "name": "Manufacturing",