diff --git a/frontend/src/utils/date.ts b/frontend/src/utils/date.ts
new file mode 100644
index 0000000..0c1e988
--- /dev/null
+++ b/frontend/src/utils/date.ts
@@ -0,0 +1,32 @@
+export function formatTimestamp(timestamp: number, format: string = 'YYYY-MM-DD'): string {
+  if (!timestamp) {
+    return '-'
+  }
+
+  const date = new Date(timestamp)
+  const year = date.getFullYear()
+  const month = String(date.getMonth() + 1).padStart(2, '0')
+  const day = String(date.getDate()).padStart(2, '0')
+  const hours = String(date.getHours()).padStart(2, '0')
+  const minutes = String(date.getMinutes()).padStart(2, '0')
+  const seconds = String(date.getSeconds()).padStart(2, '0')
+
+  return format.replace(/YYYY|MM|DD|HH|mm|ss/g, (match) => {
+    switch (match) {
+      case 'YYYY':
+        return String(year)
+      case 'MM':
+        return month
+      case 'DD':
+        return day
+      case 'HH':
+        return hours
+      case 'mm':
+        return minutes
+      case 'ss':
+        return seconds
+      default:
+        return match
+    }
+  })
+}