diff --git a/source/php/Helper/SingleEventData.php b/source/php/Helper/SingleEventData.php
index 4dbf1705..43534a58 100644
--- a/source/php/Helper/SingleEventData.php
+++ b/source/php/Helper/SingleEventData.php
@@ -106,7 +106,7 @@ public static function singleEventDate($postId = null, $dateTime = null)
      */
     public static function getFormattedTimeDiff($start, $end)
     {
-        $diff = ($end - $start) / 60 / 60;
+        $diff = ($end - $start) / 3600;
 
         $singleEventData = new SingleEventData();
 
@@ -122,8 +122,8 @@ public static function getFormattedTimeDiff($start, $end)
     public function eventOccasionDuration($from, $to) {
         $diff = (int)abs($to - $from);
         if ($diff < DAY_IN_SECONDS && $diff >= HOUR_IN_SECONDS) {
-            $hours = round($diff / HOUR_IN_SECONDS );
-            $mins = round($diff / MINUTE_IN_SECONDS) - ($hours * 60);
+            $hours = floor($diff / HOUR_IN_SECONDS );
+            $mins = floor($diff / MINUTE_IN_SECONDS) - ($hours * 60);
             $formattedDiff = sprintf(_n('%s hour', '%s hours', $hours), $hours);
             if ($mins > 0) {
                 $formattedMins = sprintf(_n('%s min', '%s mins', $mins), $mins);
diff --git a/tests/phpunit/tests/Helper/SingleEventData.php b/tests/phpunit/tests/Helper/SingleEventData.php
new file mode 100644
index 00000000..e20e786d
--- /dev/null
+++ b/tests/phpunit/tests/Helper/SingleEventData.php
@@ -0,0 +1,22 @@
+<?php
+
+namespace EventManagerIntegration\tests\Helper;
+
+use EventManagerIntegration\Helper\SingleEventData;
+use WP_Mock\Tools\TestCase;
+
+class SingleEventDataTest extends TestCase {
+
+    /**
+     * @testdox getFormattedTimeDiff() should return the formatted time difference between two timestamps without rounding minutes.
+     */
+    public function testGetFormattedTimeDiff() {
+        define('DAY_IN_SECONDS', 86400);
+        define('HOUR_IN_SECONDS', 3600);
+        define('MINUTE_IN_SECONDS', 60);
+
+        $start = strtotime('2021-01-01 12:00:00');
+        $end = strtotime('2021-01-01 13:31:30');
+        $this->assertEquals('1 hour 31 mins', SingleEventData::getFormattedTimeDiff($start, $end));
+    }
+}
\ No newline at end of file