diff --git a/rohit/js/find-hcf-lcm.js b/rohit/js/find-hcf-lcm.js
new file mode 100644
index 0000000..cee78ce
--- /dev/null
+++ b/rohit/js/find-hcf-lcm.js
@@ -0,0 +1,37 @@
+function findHCF(a, b) {
+  let hc = 1;
+  for (let itr = 2; itr <= (a && b); itr++) {
+    if (a % itr == 0 && b % itr == 0) {
+      hc = itr;
+    }
+  }
+
+  return hc;
+}
+
+console.log("LCM of 45,60 = " + findHCF(45, 60));
+
+function findLCM(a, b) {
+  let lc = (a * b) / findHCF(a, b);
+
+  return lc;
+}
+
+console.log("LCM of 10,45 = " + findLCM(10, 45));
+
+// find HCF by using Euclidean's Law
+function getHCF(a, b) {
+  if (b == 0) {
+    return a;
+  }
+  return getHCF(b, a % b);
+}
+
+// get HCF of two numbers
+console.log("HCF of 30,45 = " + getHCF(30, 45));
+
+// get HCF of three numbers
+console.log("HCF of 30,45,60 = " + getHCF(getHCF(30, 45), 60));
+
+// get LCM of three numbers
+console.log("LCM of 30,40,60 = " + findLCM(findLCM(30, 40), 60));