===================================================================
diff --git a/app/helpers/timelog_helper.rb b/app/helpers/timelog_helper.rb
--- a/app/helpers/timelog_helper.rb	
+++ b/app/helpers/timelog_helper.rb	
@@ -109,9 +109,9 @@
       report.periods.each do |period|
         sum = sum_hours(select_hours(report.hours, report.columns, period.to_s))
         total += sum
-        row << (sum > 0 ? sum : '')
+        row << (sum > 0 ? format_hours(sum) : '')
       end
-      row << total
+      row << format_hours(total)
       csv << row
     end
   end

===================================================================
diff --git a/app/helpers/timelog_helper.rb b/app/helpers/timelog_helper.rb
--- a/app/helpers/timelog_helper.rb	
+++ b/app/helpers/timelog_helper.rb	(date 1628525671015)
@@ -128,9 +128,9 @@
       periods.each do |period|
         sum = sum_hours(select_hours(hours_for_value, columns, period.to_s))
         total += sum
-        row << (sum > 0 ? sum : '')
+        row << (sum > 0 ? format_hours(sum) : '')
       end
-      row << total
+      row << format_hours(total)
       csv << row
       if criteria.length > level + 1
         report_criteria_to_csv(csv, available_criteria, columns, criteria, periods, hours_for_value, level + 1)