diff --git a/codewars/7kyu/convert-between-radians-and-degrees/koronya.js b/codewars/7kyu/convert-between-radians-and-degrees/koronya.js
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+++ b/codewars/7kyu/convert-between-radians-and-degrees/koronya.js
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+// [JS][7kyu] Convert between radians and degrees
+// convert-between-radians-and-degrees
+// https://www.codewars.com/kata/544e2c60908f2da03600022a/train/javascript
+
+Math.degrees = function (rad) {
+  const degrees = (rad * 180) / Math.PI
+  const rounded = Math.round(degrees * 100) / 100
+  return `${rounded}deg`
+}
+
+Math.radians = function (deg) {
+  const radians = (deg * Math.PI) / 180
+  const rounded = Math.round(radians * 100) / 100
+  return `${rounded}rad`
+}
+
+// Math.degrees(Math.PI) === '180deg'
+// Math.radians(180) === '3.14rad'