diff --git a/html/script.js b/html/script.js
index c92f79f74..ad8d636cb 100644
--- a/html/script.js
+++ b/html/script.js
@@ -24,6 +24,111 @@ var ctx = canvas.getContext("2d");
 ctx.font = "20px Arial";
 ctx.textAlign = "center";
 
+const rssiToPercent =
+[
+    /* -100 */ 0,
+    /* -99 */ 0,
+    /* -98 */ 0,
+    /* -97 */ 0,
+    /* -96 */ 0,
+    /* -95 */ 0,
+    /* -94 */ 4,
+    /* -93 */ 6,
+    /* -92 */ 8,
+    /* -91 */ 11,
+    /* -90 */ 13,
+    /* -89 */ 15,
+    /* -88 */ 17,
+    /* -87 */ 19,
+    /* -86 */ 21,
+    /* -85 */ 23,
+    /* -84 */ 26,
+    /* -83 */ 28,
+    /* -82 */ 30,
+    /* -81 */ 32,
+    /* -80 */ 34,
+    /* -79 */ 35,
+    /* -78 */ 37,
+    /* -77 */ 39,
+    /* -76 */ 41,
+    /* -75 */ 43,
+    /* -74 */ 45,
+    /* -73 */ 46,
+    /* -72 */ 48,
+    /* -71 */ 50,
+    /* -70 */ 52,
+    /* -69 */ 53,
+    /* -68 */ 55,
+    /* -67 */ 56,
+    /* -66 */ 58,
+    /* -65 */ 59,
+    /* -64 */ 61,
+    /* -63 */ 62,
+    /* -62 */ 64,
+    /* -61 */ 65,
+    /* -60 */ 67,
+    /* -59 */ 68,
+    /* -58 */ 69,
+    /* -57 */ 71,
+    /* -56 */ 72,
+    /* -55 */ 73,
+    /* -54 */ 75,
+    /* -53 */ 76,
+    /* -52 */ 77,
+    /* -51 */ 78,
+    /* -50 */ 79,
+    /* -49 */ 80,
+    /* -48 */ 81,
+    /* -47 */ 82,
+    /* -46 */ 83,
+    /* -45 */ 84,
+    /* -44 */ 85,
+    /* -43 */ 86,
+    /* -42 */ 87,
+    /* -41 */ 88,
+    /* -40 */ 89,
+    /* -39 */ 90,
+    /* -38 */ 90,
+    /* -37 */ 91,
+    /* -36 */ 92,
+    /* -35 */ 93,
+    /* -34 */ 93,
+    /* -33 */ 94,
+    /* -32 */ 95,
+    /* -31 */ 95,
+    /* -30 */ 96,
+    /* -29 */ 96,
+    /* -28 */ 97,
+    /* -27 */ 97,
+    /* -26 */ 98,
+    /* -25 */ 98,
+    /* -24 */ 99,
+    /* -23 */ 99,
+    /* -22 */ 99,
+    /* -21 */ 100,
+    /* -20 */ 100,
+    /* -19 */ 100,
+    /* -18 */ 100,
+    /* -17 */ 100,
+    /* -16 */ 100,
+    /* -15 */ 100,
+    /* -14 */ 100,
+    /* -13 */ 100,
+    /* -12 */ 100,
+    /* -11 */ 100,
+    /* -10 */ 100,
+    /* -9 */  100,
+    /* -8 */  100,
+    /* -7 */  100,
+    /* -6 */  100,
+    /* -5 */  100,
+    /* -4 */  100,
+    /* -3 */  100,
+    /* -2 */  100,
+    /* -1 */  100,
+    /*  0 */  100,
+];
+
 // Default modal properties
 $.fn.modal.Constructor.DEFAULTS.backdrop = 'static';
 $.fn.modal.Constructor.DEFAULTS.keyboard = false;
@@ -1934,19 +2039,19 @@ function ProcessReceivedJsonStatusMessage(JsonStat) {
     let Ethernet = Network.wifi;
 
     let rssi = Wifi.rssi;
-    let quality = 2 * (rssi + 100);
+    let quality = rssi + 100;
 
     if (rssi <= -100) {
         quality = 0;
     }
-    else if (rssi >= -50) {
+    else if (rssi >= 0) {
         quality = 100;
     }
 
     $('#w_connected').text((true === Wifi.connected) ? "Yes" : "No");
     $('#w_hostname').text(Wifi.hostname);
     $('#w_rssi').text(rssi);
-    $('#w_quality').text(quality);
+    $('#w_quality').text(rssiToPercent[quality]);
     $('#w_ssid').text(Wifi.ssid);
     $('#w_ip').text(Wifi.ip);
     $('#w_subnet').text(Wifi.subnet);