diff --git a/476.number-complement.js b/476.number-complement.js
new file mode 100644
index 0000000..7643227
--- /dev/null
+++ b/476.number-complement.js
@@ -0,0 +1,18 @@
+/**
+ * URL of this problem
+ * https://leetcode.com/problems/number-complement/
+ */
+
+/**
+ * @param {number} num
+ * @return {number}
+ */
+var findComplement = function (num) {
+	const NumArr = num.toString(2).split("");
+
+	for (let i = 0; i < NumArr.length; i++) {
+		NumArr[i] === "0" ? (NumArr[i] = "1") : (NumArr[i] = "0");
+	}
+
+	return parseInt(NumArr.join(""), 2);
+};