diff --git a/src/components/fabric/QLine.js b/src/components/fabric/QLine.js
index 66735f69..a5d63c83 100644
--- a/src/components/fabric/QLine.js
+++ b/src/components/fabric/QLine.js
@@ -20,7 +20,7 @@ export default class QLine extends fabric.Line {
     // 선의 길이를 계산하여 length 속성을 초기화합니다.
     const dx = this.x2 - this.x1
     const dy = this.y2 - this.y1
-    this.length = Math.sqrt(dx * dx + dy * dy).toFixed(0)
+    this.length = Number(Math.sqrt(dx * dx + dy * dy).toFixed(0))
     this.#viewLengthText = option.viewLengthText ?? true
   }
 
@@ -46,7 +46,7 @@ export default class QLine extends fabric.Line {
       const dx = this.x2 - this.x1
       const dy = this.y2 - this.y1
       const length = Math.sqrt(dx * dx + dy * dy)
-      this.length = length.toFixed(0) // 선의 길이를 length 속성에 저장합니다.
+      this.length = Number(length.toFixed(0)) // 선의 길이를 length 속성에 저장합니다.
       this.#addLengthText()
     })
 
@@ -72,7 +72,7 @@ export default class QLine extends fabric.Line {
     }
 
     if (this.#viewLengthText) {
-      const text = new fabric.Text(this.length, {
+      const text = new fabric.Text(this.length.toString(), {
         left: (this.x1 + this.x2) / 2,
         top: (this.y1 + this.y2) / 2,
         fontSize: this.#fontSize,