diff --git a/calculator/calculator.js b/calculator/calculator.js
index 8ad98c0..660e58a 100644
--- a/calculator/calculator.js
+++ b/calculator/calculator.js
@@ -19,9 +19,20 @@ function power(a, b) {
 }
 
 function factorial(n) {
+  if (n == 0) return 1;
+  let product = 1;
+  for (let i = n; i > 0; i--) {
+    product *= i;
+  }
+  return product;
+}
+
+// This is another implementation of Factorial that uses recursion
+// THANKS to @ThirtyThreeB!
+function recursiveFactorial(n) {
   if (n===0){
     return 1;
-}
+  }
   return n * factorial (n-1);
 }