diff --git a/src/components/management/StuffDetail.jsx b/src/components/management/StuffDetail.jsx
index 20332963..e0843b5d 100644
--- a/src/components/management/StuffDetail.jsx
+++ b/src/components/management/StuffDetail.jsx
@@ -22,7 +22,7 @@ import { stuffSearchState } from '@/store/stuffAtom'
 import { QcastContext } from '@/app/QcastProvider'
 import { useCanvasMenu } from '@/hooks/common/useCanvasMenu'
 import { useSwal } from '@/hooks/useSwal'
-import { sanitizeDecimalInputEvent} from '@/util/input-utils'
+import { sanitizeIntegerInputEvent } from '@/util/input-utils'
 
 export default function StuffDetail() {
   const [stuffSearch, setStuffSearch] = useRecoilState(stuffSearchState)
diff --git a/src/util/input-utils.js b/src/util/input-utils.js
index a4376430..7578e95e 100644
--- a/src/util/input-utils.js
+++ b/src/util/input-utils.js
@@ -24,15 +24,38 @@ export const onlyNumberWithDotInputChange = (e, callback) => {
 // Number normalization utilities
 // =============================
 // 1) Normalize any string to NFKC and keep only ASCII digits 0-9.
+// 1) Normalize any string to keep only ASCII digits 0-9
 export function normalizeDigits(value) {
-  return String(value ?? '').normalize('NFKC').replace(/[^0-9]/g, '')
+  if (value == null) return '';
+
+  // First convert full-width numbers to half-width
+  const str = String(value).replace(/[０-９]/g, s =>
+    String.fromCharCode(s.charCodeAt(0) - 0xFEE0)
+  );
+
+  // Then remove all non-digit characters
+  return str.replace(/\D/g, '');
 }
 
-// 2) Normalize decimal numbers (allow one dot).
+// 2) Normalize decimal numbers (allow one dot)
 export function normalizeDecimal(value) {
-  const s = String(value ?? '').normalize('NFKC').replace(/[^0-9.]/g, '')
-  const [head, ...rest] = s.split('.')
-  return rest.length ? `${head}.${rest.join('').replace(/\./g, '')}` : head
+  if (value == null) return '';
+
+  // Convert full-width numbers and dot to half-width
+  let str = String(value).replace(/[０-９．]/g, s =>
+    s === '．' ? '.' : String.fromCharCode(s.charCodeAt(0) - 0xFEE0)
+  );
+
+  // Handle multiple dots by keeping only the first one
+  const parts = str.split('.');
+  if (parts.length > 1) {
+    str = parts[0] + '.' + parts.slice(1).join('');
+  }
+
+  // Remove any remaining non-digit and non-dot characters
+  // and ensure only one dot remains
+  return str.replace(/[^\d.]/g, '')
+    .replace(/^(\d*\.\d*).*$/, '$1');
 }
 
 // 2-1) Limit fractional digits for decimal numbers. Default to 2 digits.