diff --git a/app/Http/Controllers/Api/Admin/ItemManagementApiController.php b/app/Http/Controllers/Api/Admin/ItemManagementApiController.php
index ace828a7..6ac82b1d 100644
--- a/app/Http/Controllers/Api/Admin/ItemManagementApiController.php
+++ b/app/Http/Controllers/Api/Admin/ItemManagementApiController.php
@@ -66,11 +66,13 @@ public function calculateFormula(Request $request, int $id): JsonResponse
         $width = (int) $request->input('width', 1000);
         $height = (int) $request->input('height', 1000);
         $qty = (int) $request->input('qty', 1);
+        $mp = $request->input('mp', 'single');
 
         $variables = [
             'W0' => $width,
             'H0' => $height,
             'QTY' => $qty,
+            'MP' => in_array($mp, ['single', 'three']) ? $mp : 'single',
         ];
 
         $formulaService = new FormulaApiService();
diff --git a/resources/views/item-management/index.blade.php b/resources/views/item-management/index.blade.php
index 1a2b3c14..06fcb13e 100644
--- a/resources/views/item-management/index.blade.php
+++ b/resources/views/item-management/index.blade.php
@@ -77,6 +77,14 @@ class="w-24 px-2 py-1.5 text-sm border border-gray-300 rounded focus:ring-2 focu
                         <input type="number" id="input-qty" value="1" min="1" max="100" step="1"
                                class="w-16 px-2 py-1.5 text-sm border border-gray-300 rounded focus:ring-2 focus:ring-blue-500 focus:outline-none">
                     </div>
+                    <div>
+                        <label class="block text-xs text-gray-500 mb-1">전원</label>
+                        <select id="input-mp"
+                                class="px-2 py-1.5 text-sm border border-gray-300 rounded focus:ring-2 focus:ring-blue-500 focus:outline-none">
+                            <option value="single">단상(220V)</option>
+                            <option value="three">삼상(380V)</option>
+                        </select>
+                    </div>
                     <button type="button" id="btn-calculate" onclick="calculateFormula()"
                             class="px-4 py-1.5 text-sm font-medium text-white bg-blue-600 rounded hover:bg-blue-700 transition-colors">
                         산출
@@ -355,6 +363,7 @@ function hideFormulaTab() {
         const width = parseInt(document.getElementById('input-width').value) || 1000;
         const height = parseInt(document.getElementById('input-height').value) || 1000;
         const qty = parseInt(document.getElementById('input-qty').value) || 1;
+        const mp = document.getElementById('input-mp').value || 'single';
 
         if (width < 100 || width > 10000 || height < 100 || height > 10000) {
             alert('폭과 높이는 100~10000 범위로 입력하세요.');
@@ -371,7 +380,7 @@ function hideFormulaTab() {
                 'Accept': 'application/json',
                 'X-CSRF-TOKEN': csrfToken,
             },
-            body: JSON.stringify({ width, height, qty }),
+            body: JSON.stringify({ width, height, qty, mp }),
         })
         .then(res => {
             if (!res.ok) {