diff --git a/erpnext/manufacturing/doctype/bom_operation/bom_operation.json b/erpnext/manufacturing/doctype/bom_operation/bom_operation.json
index ad47d4024b4..86fcd7082fd 100644
--- a/erpnext/manufacturing/doctype/bom_operation/bom_operation.json
+++ b/erpnext/manufacturing/doctype/bom_operation/bom_operation.json
@@ -1,5 +1,6 @@
 {
  "actions": [],
+ "allow_bulk_edit": 1,
  "creation": "2013-02-22 01:27:49",
  "doctype": "DocType",
  "document_type": "Setup",
@@ -139,11 +140,13 @@
    "label": "Image"
   },
   {
+   "default": "1",
    "fetch_from": "operation.batch_size",
    "fetch_if_empty": 1,
    "fieldname": "batch_size",
-   "fieldtype": "Int",
-   "label": "Batch Size"
+   "fieldtype": "Float",
+   "label": "Batch Size",
+   "non_negative": 1
   },
   {
    "depends_on": "eval:doc.parenttype == \"Routing\" || !parent.routing",
@@ -304,7 +307,7 @@
  "index_web_pages_for_search": 1,
  "istable": 1,
  "links": [],
- "modified": "2026-04-01 17:09:48.771834",
+ "modified": "2026-05-25 17:15:42.044630",
  "modified_by": "Administrator",
  "module": "Manufacturing",
  "name": "BOM Operation",
diff --git a/erpnext/manufacturing/doctype/bom_operation/bom_operation.py b/erpnext/manufacturing/doctype/bom_operation/bom_operation.py
index 72d7f194fd8..71fcd689841 100644
--- a/erpnext/manufacturing/doctype/bom_operation/bom_operation.py
+++ b/erpnext/manufacturing/doctype/bom_operation/bom_operation.py
@@ -18,7 +18,7 @@ class BOMOperation(Document):
 		base_cost_per_unit: DF.Float
 		base_hour_rate: DF.Currency
 		base_operating_cost: DF.Currency
-		batch_size: DF.Int
+		batch_size: DF.Float
 		bom_no: DF.Link | None
 		cost_per_unit: DF.Float
 		description: DF.TextEditor | None
diff --git a/erpnext/manufacturing/doctype/work_order_operation/work_order_operation.json b/erpnext/manufacturing/doctype/work_order_operation/work_order_operation.json
index 918f2b21847..d0ef7f257a6 100644
--- a/erpnext/manufacturing/doctype/work_order_operation/work_order_operation.json
+++ b/erpnext/manufacturing/doctype/work_order_operation/work_order_operation.json
@@ -196,10 +196,11 @@
    "read_only": 1
   },
   {
+   "default": "1",
    "fieldname": "batch_size",
    "fieldtype": "Float",
    "label": "Batch Size",
-   "read_only": 1
+   "non_negative": 1
   },
   {
    "fieldname": "sequence_id",
@@ -316,7 +317,7 @@
  "index_web_pages_for_search": 1,
  "istable": 1,
  "links": [],
- "modified": "2026-05-20 13:01:21.827200",
+ "modified": "2026-05-25 17:15:12.038470",
  "modified_by": "Administrator",
  "module": "Manufacturing",
  "name": "Work Order Operation",