diff --git a/app/Models/Quote/Quote.php b/app/Models/Quote/Quote.php
index c8bde74..2a6a900 100644
--- a/app/Models/Quote/Quote.php
+++ b/app/Models/Quote/Quote.php
@@ -254,7 +254,7 @@ public function scopeFinalized($query)
 
     public function scopeConverted($query)
     {
-        return $query->where('status', self::STATUS_CONVERTED);
+        return $query->whereNotNull('order_id');
     }
 
     /**
@@ -339,12 +339,29 @@ public function isEditable(): bool
         return true;
     }
 
+    /**
+     * 상태 접근자: order_id가 존재하면 자동으로 'converted' 반환
+     * DB에 status='converted'를 저장하지 않고, 수주 존재 여부로 판별
+     */
+    public function getStatusAttribute($value): string
+    {
+        if ($this->order_id) {
+            return self::STATUS_CONVERTED;
+        }
+
+        return $value;
+    }
+
     /**
      * 삭제 가능 여부 확인
      */
     public function isDeletable(): bool
     {
-        return ! in_array($this->status, [self::STATUS_FINALIZED, self::STATUS_CONVERTED]);
+        if ($this->order_id) {
+            return false;
+        }
+
+        return $this->getRawOriginal('status') !== self::STATUS_FINALIZED;
     }
 
     /**
diff --git a/app/Services/OrderService.php b/app/Services/OrderService.php
index 8e8399b..59d32ed 100644
--- a/app/Services/OrderService.php
+++ b/app/Services/OrderService.php
@@ -755,9 +755,8 @@ public function createFromQuote(int $quoteId, array $data = [])
             $order->refresh();
             $order->recalculateTotals()->save();
 
-            // 견적 상태를 '수주전환완료'로 변경
+            // 견적에 수주 연결 (status는 accessor가 자동으로 'converted' 반환)
             $quote->update([
-                'status' => Quote::STATUS_CONVERTED,
                 'order_id' => $order->id,
                 'updated_by' => $userId,
             ]);
diff --git a/app/Services/Quote/QuoteService.php b/app/Services/Quote/QuoteService.php
index 021b3f1..cc71695 100644
--- a/app/Services/Quote/QuoteService.php
+++ b/app/Services/Quote/QuoteService.php
@@ -73,9 +73,11 @@ public function index(array $params): LengthAwarePaginator
             $query->where('quote_type', $quoteType);
         }
 
-        // 상태 필터
-        if ($status) {
-            $query->where('status', $status);
+        // 상태 필터 (converted는 order_id 기반으로 판별)
+        if ($status === Quote::STATUS_CONVERTED) {
+            $query->whereNotNull('order_id');
+        } elseif ($status) {
+            $query->where('status', $status)->whereNull('order_id');
         }
 
         // 제품 카테고리 필터
@@ -592,12 +594,12 @@ public function cancelFinalize(int $id): Quote
             throw new NotFoundHttpException(__('error.quote_not_found'));
         }
 
-        if ($quote->status !== Quote::STATUS_FINALIZED) {
-            throw new BadRequestHttpException(__('error.quote_not_finalized'));
+        if ($quote->order_id) {
+            throw new BadRequestHttpException(__('error.quote_already_converted'));
         }
 
-        if ($quote->status === Quote::STATUS_CONVERTED) {
-            throw new BadRequestHttpException(__('error.quote_already_converted'));
+        if ($quote->getRawOriginal('status') !== Quote::STATUS_FINALIZED) {
+            throw new BadRequestHttpException(__('error.quote_not_finalized'));
         }
 
         $quote->update([
@@ -705,9 +707,8 @@ public function convertToOrder(int $id): Quote
             $order->recalculateTotals();
             $order->save();
 
-            // 견적 상태 변경
+            // 견적에 수주 연결 (status는 accessor가 자동으로 'converted' 반환)
             $quote->update([
-                'status' => Quote::STATUS_CONVERTED,
                 'order_id' => $order->id,
                 'updated_by' => $userId,
             ]);
diff --git a/app/Services/Stats/QuoteStatService.php b/app/Services/Stats/QuoteStatService.php
index 5a09be9..49c6694 100644
--- a/app/Services/Stats/QuoteStatService.php
+++ b/app/Services/Stats/QuoteStatService.php
@@ -23,7 +23,7 @@ public function aggregateDaily(int $tenantId, Carbon $date): int
                 COALESCE(SUM(total_amount), 0) as total_amount,
                 SUM(CASE WHEN status = 'approved' THEN 1 ELSE 0 END) as approved_count,
                 SUM(CASE WHEN status = 'rejected' THEN 1 ELSE 0 END) as rejected_count,
-                SUM(CASE WHEN status = 'converted' THEN 1 ELSE 0 END) as conversion_count
+                SUM(CASE WHEN order_id IS NOT NULL THEN 1 ELSE 0 END) as conversion_count
             ")
             ->first();