diff --git a/data/interfaces/default/graphs.html b/data/interfaces/default/graphs.html
index 6c83dfd3..37b85f93 100644
--- a/data/interfaces/default/graphs.html
+++ b/data/interfaces/default/graphs.html
@@ -341,6 +341,14 @@
 
 
         var music_visible = (${config['music_logging_enable']} == 1 ? true : false);
+        
+        function dataSecondsToHours(data) {
+            $.each(data.series, function (i, series) {
+                series.data = $.map(series.data, function (value) {
+                    return value / 60 / 60;
+                });
+            });
+        }
 
         function loadGraphsTab1(time_range, yaxis) {
             $('#days-selection').show();
@@ -354,18 +362,19 @@
                 dataType: "json",
                 success: function(data) {
                     var dateArray = [];
-                    for (var i = 0; i < data.categories.length; i++) {
-                        dateArray.push(moment(data.categories[i], 'YYYY-MM-DD').valueOf());
+                    $.each(data.categories, function (i, day) {
+                        dateArray.push(moment(day, 'YYYY-MM-DD').valueOf());
                         // Highlight the weekend
-                        if ((moment(data.categories[i], 'YYYY-MM-DD').format('ddd') == 'Sat') ||
-                            (moment(data.categories[i], 'YYYY-MM-DD').format('ddd') == 'Sun')) {
+                        if ((moment(day, 'YYYY-MM-DD').format('ddd') == 'Sat') ||
+                            (moment(day, 'YYYY-MM-DD').format('ddd') == 'Sun')) {
                             hc_plays_by_day_options.xAxis.plotBands.push({
                                 from: i-0.5,
                                 to: i+0.5,
                                 color: 'rgba(80,80,80,0.3)'
                             });
                         }
-                    }
+                    });
+                    if (yaxis === 'duration') { dataSecondsToHours(data); }
                     hc_plays_by_day_options.yAxis.min = 0;
                     hc_plays_by_day_options.xAxis.categories = dateArray;
                     hc_plays_by_day_options.series = data.series;
@@ -380,6 +389,7 @@
                 data: { time_range: time_range, y_axis: yaxis, user_id: selected_user_id },
                 dataType: "json",
                 success: function(data) {
+                    if (yaxis === 'duration') { dataSecondsToHours(data); }
                     hc_plays_by_dayofweek_options.xAxis.categories = data.categories;
                     hc_plays_by_dayofweek_options.series = data.series;
                     hc_plays_by_dayofweek_options.series[2].visible = music_visible;
@@ -393,6 +403,7 @@
                 data: { time_range: time_range, y_axis: yaxis, user_id: selected_user_id },
                 dataType: "json",
                 success: function(data) {
+                    if (yaxis === 'duration') { dataSecondsToHours(data); }
                     hc_plays_by_hourofday_options.xAxis.categories = data.categories;
                     hc_plays_by_hourofday_options.series = data.series;
                     hc_plays_by_hourofday_options.series[2].visible = music_visible;
@@ -406,6 +417,7 @@
                 data: { time_range: time_range, y_axis: yaxis, user_id: selected_user_id },
                 dataType: "json",
                 success: function(data) {
+                    if (yaxis === 'duration') { dataSecondsToHours(data); }
                     hc_plays_by_platform_options.xAxis.categories = data.categories;
                     hc_plays_by_platform_options.series = data.series;
                     hc_plays_by_platform_options.series[2].visible = music_visible;
@@ -419,6 +431,7 @@
                 data: { time_range: time_range, y_axis: yaxis, user_id: selected_user_id  },
                 dataType: "json",
                 success: function(data) {
+                    if (yaxis === 'duration') { dataSecondsToHours(data); }
                     hc_plays_by_user_options.xAxis.categories = data.categories;
                     hc_plays_by_user_options.series = data.series;
                     hc_plays_by_user_options.series[2].visible = music_visible;
@@ -439,18 +452,19 @@
                 dataType: "json",
                 success: function(data) {
                     var dateArray = [];
-                    for (var i = 0; i < data.categories.length; i++) {
-                        dateArray.push(moment(data.categories[i], 'YYYY-MM-DD').valueOf());
+                    $.each(data.categories, function (i, day) {
+                        dateArray.push(moment(day, 'YYYY-MM-DD').valueOf());
                         // Highlight the weekend
-                        if ((moment(data.categories[i], 'YYYY-MM-DD').format('ddd') == 'Sat') ||
-                            (moment(data.categories[i], 'YYYY-MM-DD').format('ddd') == 'Sun')) {
-                            hc_plays_by_stream_type_options.xAxis.plotBands.push({
+                        if ((moment(day, 'YYYY-MM-DD').format('ddd') == 'Sat') ||
+                            (moment(day, 'YYYY-MM-DD').format('ddd') == 'Sun')) {
+                            hc_plays_by_day_options.xAxis.plotBands.push({
                                 from: i-0.5,
                                 to: i+0.5,
                                 color: 'rgba(80,80,80,0.3)'
                             });
                         }
-                    }
+                    });
+                    if (yaxis === 'duration') { dataSecondsToHours(data); }
                     hc_plays_by_stream_type_options.yAxis.min = 0;
                     hc_plays_by_stream_type_options.xAxis.categories = dateArray;
                     hc_plays_by_stream_type_options.series = data.series;
@@ -464,6 +478,7 @@
                 data: { time_range: time_range, y_axis: yaxis, user_id: selected_user_id },
                 dataType: "json",
                 success: function(data) {
+                    if (yaxis === 'duration') { dataSecondsToHours(data); }
                     hc_plays_by_source_resolution_options.xAxis.categories = data.categories;
                     hc_plays_by_source_resolution_options.series = data.series;
                     var hc_plays_by_source_resolution = new Highcharts.Chart(hc_plays_by_source_resolution_options);
@@ -476,6 +491,7 @@
                 data: { time_range: time_range, y_axis: yaxis, user_id: selected_user_id },
                 dataType: "json",
                 success: function(data) {
+                    if (yaxis === 'duration') { dataSecondsToHours(data); }
                     hc_plays_by_stream_resolution_options.xAxis.categories = data.categories;
                     hc_plays_by_stream_resolution_options.series = data.series;
                     var hc_plays_by_stream_resolution = new Highcharts.Chart(hc_plays_by_stream_resolution_options);
@@ -488,6 +504,7 @@
                 data: { time_range: time_range, y_axis: yaxis, user_id: selected_user_id },
                 dataType: "json",
                 success: function(data) {
+                    if (yaxis === 'duration') { dataSecondsToHours(data); }
                     hc_plays_by_platform_by_stream_type_options.xAxis.categories = data.categories;
                     hc_plays_by_platform_by_stream_type_options.series = data.series;
                     var hc_plays_by_platform_by_stream_type = new Highcharts.Chart(hc_plays_by_platform_by_stream_type_options);
@@ -500,6 +517,7 @@
                 data: { time_range: time_range, y_axis: yaxis, user_id: selected_user_id },
                 dataType: "json",
                 success: function(data) {
+                    if (yaxis === 'duration') { dataSecondsToHours(data); }
                     hc_plays_by_user_by_stream_type_options.xAxis.categories = data.categories;
                     hc_plays_by_user_by_stream_type_options.series = data.series;
                     var hc_plays_by_user_by_stream_type = new Highcharts.Chart(hc_plays_by_user_by_stream_type_options);
@@ -518,6 +536,7 @@
                 data: { y_axis: yaxis, user_id: selected_user_id },
                 dataType: "json",
                 success: function(data) {
+                    if (yaxis === 'duration') { dataSecondsToHours(data); }
                     hc_plays_by_month_options.yAxis.min = 0;
                     hc_plays_by_month_options.xAxis.categories = data.categories;
                     hc_plays_by_month_options.series = data.series;
@@ -610,56 +629,55 @@
             if (type === 'plays') {
                 yaxis_format = function() { return this.value; };
                 tooltip_format = function() {
-                                    if (moment(this.x, 'X').isValid() && (this.x > 946684800)) {
-                                        var s = '<b>'+ moment(this.x).format("ddd MMM D") +'</b>';
-                                    } else {
-                                        var s = '<b>'+ this.x +'</b>';
-                                    }
-                                    if (this.points.length > 1) {
-                                        var total = 0;
-                                        $.each(this.points, function(i, point) {
-                                            s += '<br/>'+point.series.name+': '+point.y;
-                                            total += point.y;
-                                        });
-                                        s += '<br><b>Total: '+total+'</b>';
-                                    } else {
-                                        $.each(this.points, function(i, point) {
-                                            s += '<br/>'+point.series.name+': '+point.y;
-                                        });
-                                    }
-                                    return s;
-                                 }
+                    if (moment(this.x, 'X').isValid() && (this.x > 946684800)) {
+                        var s = '<b>'+ moment(this.x).format('ddd MMM D') +'</b>';
+                    } else {
+                        var s = '<b>'+ this.x +'</b>';
+                    }
+                    if (this.points.length > 1) {
+                        var total = 0;
+                        $.each(this.points, function(i, point) {
+                            s += '<br/>'+point.series.name+': '+point.y;
+                            total += point.y;
+                        });
+                        s += '<br><b>Total: '+total+'</b>';
+                    } else {
+                        $.each(this.points, function(i, point) {
+                            s += '<br/>'+point.series.name+': '+point.y;
+                        });
+                    }
+                    return s;
+                }
                 stack_labels_format = function() {
-                                          return this.total;
-                                      }
-
+                    return this.total;
+                }
                 $('.yaxis-text').html('Play count');
             } else {
-                yaxis_format = function() { return moment.duration(this.value, 'seconds').format("H [h] m [m]"); };
+                yaxis_format = function() { return moment.duration(this.value, 'hours').format('H [h] m [m]'); };
                 tooltip_format = function() {
-                                    if (moment(this.x, 'X').isValid() && (this.x > 946684800)) {
-                                        var s = '<b>'+ moment(this.x).format("ddd MMM D") +'</b>';
-                                    } else {
-                                        var s = '<b>'+ this.x +'</b>';
-                                    }
-                                    if (this.points.length > 1) {
-                                        var total = 0;
-                                        $.each(this.points, function(i, point) {
-                                            s += '<br/>'+point.series.name+': '+moment.duration(point.y, 'seconds').format('D [days] H [hrs] m [mins]');
-                                            total += point.y;
-                                        });
-                                        s += '<br/><b>Total: '+moment.duration(total, 'seconds').format('D [days] H [hrs] m [mins]')+'</b>';
-                                    } else {
-                                        $.each(this.points, function(i, point) {
-                                            s += '<br/>'+point.series.name+': '+moment.duration(point.y, 'seconds').format('D [days] H [hrs] m [mins]');
-                                        });
-                                    }
-                                    return s;
-                                 }
+                    if (moment(this.x, 'X').isValid() && (this.x > 946684800)) {
+                        var s = '<b>'+ moment(this.x).format('ddd MMM D') +'</b>';
+                    } else {
+                        var s = '<b>'+ this.x +'</b>';
+                    }
+                    if (this.points.length > 1) {
+                        var total = 0;
+                        $.each(this.points, function(i, point) {
+                            s += '<br/>'+point.series.name+': '+moment.duration(point.y, 'hours').format('D [days] H [hrs] m [mins]');
+                            total += point.y;
+                        });
+                        s += '<br/><b>Total: '+moment.duration(total, 'hours').format('D [days] H [hrs] m [mins]')+'</b>';
+                    } else {
+                        $.each(this.points, function(i, point) {
+                            s += '<br/>'+point.series.name+': '+moment.duration(point.y, 'hours').format('D [days] H [hrs] m [mins]');
+                        });
+                    }
+                    return s;
+                }
                 stack_labels_format = function() {
-                                          var s = moment.duration(this.total, 'seconds').format("H [hrs] m [mins]");
-                                          return s;
-                                      }
+                    var s = moment.duration(this.total, 'hours').format('H [h] m [m]');
+                    return s;
+                }
                 $('.yaxis-text').html('Play duration');
             }