diff --git a/src/js/main.js b/src/js/main.js
index 4865510..3b1ba1d 100644
--- a/src/js/main.js
+++ b/src/js/main.js
@@ -6,3 +6,45 @@ var tooltipList = tooltipTriggerList.map(function (tooltipTriggerEl) {
   return new Tooltip(tooltipTriggerEl, { placement: "top" });
 });
 console.log(tooltipList);
+
+import 'bootstrap/dist/css/bootstrap.min.css';
+import '../css/custom.css';
+
+function copyToClipBoardXMR() {
+  var content = document.getElementById('xmrInput');
+  content.select();
+  document.execCommand('copy');
+}
+
+function copyToClipBoardFiat() {
+  var content = document.getElementById('fiatInput');
+  content.select();
+  document.execCommand('copy');
+}
+
+function fiatConvert(value) {
+    let fiatAmount = document.getElementById("fiatInput").value;
+    let xmrValue = document.getElementById("xmrInput");
+    let selectBox = document.getElementById("selectBox").value;
+
+    if (exchangeRates[selectBox]) {
+        let value = fiatAmount / exchangeRates[selectBox];
+        xmrValue.value = value.toFixed(selectBox == 'BTC' || selectBox == 'LTC' || selectBox == 'ETH' || selectBox == 'XAG' || selectBox == 'XAU' ? 8 : 2);
+    }
+}
+
+function xmrConvert(value) {
+  let xmrAmount = document.getElementById("xmrInput").value;
+  let fiatValue = document.getElementById("fiatInput");
+  let selectBox = document.getElementById("selectBox").value;
+
+  if (exchangeRates[selectBox]) {
+      let value = xmrAmount * exchangeRates[selectBox];
+      fiatValue.value = value.toFixed(selectBox == 'BTC' || selectBox == 'LTC' || selectBox == 'ETH' || selectBox == 'XAG' || selectBox == 'XAU' ? 8 : 2);
+  }
+}
+
+window.copyToClipBoardXMR = copyToClipBoardXMR;
+window.copyToClipBoardFiat = copyToClipBoardFiat;
+window.fiatConvert = fiatConvert;
+window.xmrConvert = xmrConvert;
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