diff --git a/resources/js/packages/ui/src/FullCalendar/FullCalendarDayHeader.vue b/resources/js/packages/ui/src/FullCalendar/FullCalendarDayHeader.vue
index dfd851c2..8335d839 100644
--- a/resources/js/packages/ui/src/FullCalendar/FullCalendarDayHeader.vue
+++ b/resources/js/packages/ui/src/FullCalendar/FullCalendarDayHeader.vue
@@ -6,10 +6,10 @@ import type { Dayjs } from 'dayjs';
 
 const props = defineProps<{
     date: Dayjs;
-    totalMinutes?: number;
+    totalSeconds?: number;
 }>();
 
-const totalSeconds = computed(() => (props.totalMinutes ?? 0) * 60);
+const totalSecondsValue = computed(() => props.totalSeconds ?? 0);
 
 // Injected organization for formatting settings
 const organization = inject('organization') as ComputedRef<Organization | undefined> | undefined;
@@ -25,7 +25,7 @@ const dateFormat = computed(() => organization?.value?.date_format);
         </div>
         <span class="text-xs">{{ formatDate(date.toISOString(), dateFormat) }}</span>
         <span class="block text-xs text-muted-foreground font-medium mt-1">
-            {{ formatHumanReadableDuration(totalSeconds, intervalFormat, numberFormat) }}
+            {{ formatHumanReadableDuration(totalSecondsValue, intervalFormat, numberFormat) }}
         </span>
     </div>
 </template>
diff --git a/resources/js/packages/ui/src/FullCalendar/TimeEntryCalendar.vue b/resources/js/packages/ui/src/FullCalendar/TimeEntryCalendar.vue
index f6e124dc..77d8004f 100644
--- a/resources/js/packages/ui/src/FullCalendar/TimeEntryCalendar.vue
+++ b/resources/js/packages/ui/src/FullCalendar/TimeEntryCalendar.vue
@@ -179,20 +179,20 @@ const dailyTotals = computed(() => {
     const totals: Record<string, number> = {};
     props.timeEntries.forEach((entry) => {
         const date = getDayJsInstance()(entry.start).format('YYYY-MM-DD');
-        let duration: number;
+        let durationSeconds: number;
 
         if (entry.end !== null) {
             // Completed entry
-            duration = getDayJsInstance()(entry.end).diff(
+            durationSeconds = getDayJsInstance()(entry.end).diff(
                 getDayJsInstance()(entry.start),
-                'minutes'
+                'seconds'
             );
         } else {
             // Running entry - use current time
-            duration = currentTime.value.diff(getDayJsInstance()(entry.start), 'minutes');
+            durationSeconds = currentTime.value.diff(getDayJsInstance()(entry.start), 'seconds');
         }
 
-        totals[date] = (totals[date] || 0) + duration;
+        totals[date] = (totals[date] || 0) + durationSeconds;
     });
     return totals;
 });
@@ -444,7 +444,7 @@ onUnmounted(() => {
                     :date="
                         getDayJsInstance()(arg.date.toISOString()).utc().tz(getUserTimezone(), true)
                     "
-                    :total-minutes="
+                    :total-seconds="
                         dailyTotals[
                             getDayJsInstance()(arg.date)
                                 .utc()