How to Quickly Merge & Export Multiple Outlook Calendars to a Single iCalendar (.ics) File

At times, you may hope to merge & export multiple Outlook calendars to a single iCalendar (.ics) file. Now, this article will help you get it in quick time.

From my previous article “2 Methods to Export a Specific Date Range of Your Outlook Calendar as an iCalendar (.ics) File“, you have learned the quick solution to export one calendar to one ics file. Nevertheless, sometimes, you may need to export multiple calendars to a single file. In such a case, you have to search other ways, such as the following one.

Merge & Export Multiple Outlook Calendars to a Single iCalendar (.ics) File

  1. To start with, enter Outlook VBA editor via “Alt + F11”.
  2. Then, copy and paste the following screenshot into a module.
Dim objTempCalendar As Outlook.Folder

Sub ExportMultipleCalendars_SingleICalendarFile()
    Dim objRootFolder As Outlook.Folder
    Dim lCalendarCount As Long
    Dim i As Long
    Dim objSourceCalendar As Outlook.Folder
    Dim objCalendarItem As Outlook.AppointmentItem
    Dim objCopiedItem As Outlook.AppointmentItem
    Dim objMoviedItem As Outlook.AppointmentItem
    On Error Resume Next
    Set objRootFolder = Application.Session.GetDefaultFolder(olFolderCalendar).Parent
    Set objTempCalendar = objRootFolder.Folders.Add("Temp Calendar", olFolderCalendar)

    lCalendarCount = InputBox("Enter the count of calendars to be export", , "2")
     i = 1
    Do While i <= lCalendarCount
       Set objSourceCalendar = Outlook.Application.Session.PickFolder
       If (Not (objSourceCalendar Is Nothing)) And (objSourceCalendar.DefaultItemType = olAppointmentItem) Then
          For Each objCalendarItem In objSourceCalendar.Items
              Set objCopiedItem = objCalendarItem.Copy
              Set objMoviedItem = objCopiedItem.Move(objTempCalendar)
          i = i + 1
       End If
    Call ExportCalendarToICalendarFile(objTempCalendar)
End Sub

Sub ExportCalendarToICalendarFile(ByVal objCalendar As Outlook.Folder)
    Dim objExportedCalendar As Outlook.CalendarSharing
    Dim dStartDate As Date
    Dim dEndDate As Date
    Dim striCalendarFile As String
    Set objExportedCalendar = objCalendar.GetCalendarExporter
    dStartDate = InputBox("Input start date", "Start Date", "1/1/2018")
    dEndDate = InputBox("Input end date", "End Date", "1/31/2018")
    If dStartDate <> #1/1/4501# And dEndDate <> #1/1/4501# Then
       striCalendarFile = "E:\Calendar [" & Format(dStartDate, "YYYYMMDD") & " - " & Format(dEndDate, "YYYYMMDD") & "].ics"
       With objExportedCalendar
            .IncludeWholeCalendar = False
            .startDate = dStartDate
            .EndDate = dEndDate
            .CalendarDetail = olFullDetails
            .IncludeAttachments = True
            .IncludePrivateDetails = False
            .RestrictToWorkingHours = False
            .SaveAsICal striCalendarFile
       End With
       Call Shell("explorer.exe " & "E:\", vbNormalFocus)
    End If
End Sub

VBA Code - Merge & Export Multiple Calendars to a Single iCalendar (.ics) File

  1. After that, follow the steps below to have a try.
  • First, place cursor in the “ExportMultipleCalendars_SingleICalendarFile” macro and press “F5”.
  • Then, in the input box, type the count of calendars you want to export.Specify Count of Calendars to Be Exported
  • After that, you need to select the specific calendars in the “Select Folder” dialog box.Select Calendars
  • Subsequently, specify the date range of calendar to be exported.Enter Date Range
  • When macro finishes, the predefined folder for saving the iCalendar file will be opened in Windows Explorer. There, you can find the exported ics file, as shown in the following screenshot.Exported iCalendar File

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