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How to insert colon between numbers to make them as time format automatically in Excel?

When you insert time format in worksheet cells, have you ever be annoyed with typing the colons each time? In this article, I will talk about how to insert colon when you entering numbers to make them as time format automatically in Excel.

Insert colon between numbers to make them as time format with formulas

Auto make the numbers to time format when you entering them with VBA code


arrow blue right bubble Insert colon between numbers to make them as time format with formulas


Supposing, you have a list of numbers, to insert the colons and make them as time format, the following formulas can do you a favor.

If the numbers are always 3 or 4 digits you can use this formula:

=TIME(LEFT(A1,LEN(A1)-2),RIGHT(A1,2),0), then drag the fill handle down to the cells that you want to contain this formula, and you will get the following result as you need:

doc insert colon to numbers 1

If the numbers are 5 or 6 digits, please apply this formula:

=(INT(A1/10000)&":"&INT(MOD(A1,10000)/100)&":"&MOD(A1,100))+0, and drag the fill handle down to the cells that you want to contain this formula, and you will get number sequence as following screenshot shown:

doc insert colon to numbers 2

Then you should format the numbers as time format by clicking Time from the General drop down list under the Home tab, see screenshot:

doc insert colon to numbers 3


arrow blue right bubble Auto make the numbers to time format when you entering them with VBA code

The following VBA code also can help you to auto convert the numbers to time format when you entering them, please do as this:

1. Go the worksheet that you want to insert colons into numbers automatically.

2. Right click the sheet tab, and select View Code from the context menu, in the popped out Microsoft Visual Basic for Applications window, please copy and paste the following code into the blank Module window, see screenshot:

VBA code: Auto make the numbers to time format:

Private Sub Worksheet_Change(ByVal Target As Excel.Range)
'Updateby Extendoffice 20160606
    Dim xStr As String
    Dim xVal As String
    On Error GoTo EndMacro
    If Application.Intersect(Target, Range("A1:A20")) Is Nothing Then Exit Sub
    If Target.Count > 1 Then Exit Sub
    If Target.Value = "" Then Exit Sub
    Application.EnableEvents = False
    With Target
        If Not .HasFormula Then
            xVal = .Value
            Select Case Len(xVal)
                Case 1 ' e.g., 1 = 00:01 AM
                    xStr = "00:0" & xVal
                Case 2 ' e.g., 12 = 00:12 AM
                    xStr = "00:" & xVal
                Case 3 ' e.g., 735 = 7:35 AM
                    xStr = Left(xVal, 1) & ":" & Right(xVal, 2)
                Case 4 ' e.g., 1234 = 12:34
                    xStr = Left(xVal, 2) & ":" & Right(xVal, 2)
                Case 5 ' e.g., 12345 = 1:23:45 NOT 12:03:45
                    xStr = Left(xVal, 1) & ":" & Mid(xVal, 2, 2) & ":" & Right(xVal, 2)
                Case 6 ' e.g., 123456 = 12:34:56
                    xStr = Left(xVal, 2) & ":" & Mid(xVal, 3, 2) & ":" & Right(xVal, 2)
                Case Else
                    Err.Raise 0
            End Select
            .Value = TimeValue(xStr)
        End If
    End With
    Application.EnableEvents = True
    Exit Sub
EndMacro:
    MsgBox "You did not enter a valid time"
    Application.EnableEvents = True
End Sub

doc insert colon to numbers 4

Note: In the above code, A1:A20 is the cells that you want to insert time later, and you can change the cell reference to your need.

3. And now, when you enter the numbers such as 102319 in cell range A1:A20, and then press Enter key, the number will be formatted as 10:23:19 AM time format automatically as you need.

doc insert colon to numbers 5


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  • To post as a guest, your comment is unpublished.
    kyra · 9 months ago
    如果只要時跟分以及24小時制,請問可以怎麼改?
    • To post as a guest, your comment is unpublished.
      skyyang · 9 months ago
      Hi, kyra,
      你可以嘗試使用下面的vba來實現: (只顯示時和分)

      Private Sub Worksheet_Change(ByVal Target As Excel.Range)
      Dim xStr As String
      Dim xVal As String
      On Error GoTo EndMacro
      If Application.Intersect(Target, Range("A1:A20")) Is Nothing Then Exit Sub
      If Target.Count > 1 Then Exit Sub
      If Target.Value = "" Then Exit Sub
      Application.EnableEvents = False
      With Target
      If Not .HasFormula Then
      xVal = .Value
      Select Case Len(xVal)
      Case 1 ' e.g., 1 = 00:01 AM
      xStr = "00:0" & xVal
      Case 2 ' e.g., 12 = 00:12 AM
      xStr = "00:" & xVal
      Case 3 ' e.g., 735 = 7:35 AM
      xStr = Left(xVal, 1) & ":" & Right(xVal, 2)
      Case 4 ' e.g., 1234 = 12:34
      xStr = Left(xVal, 2) & ":" & Right(xVal, 2)
      Case 5 ' e.g., 12345 = 1:23:45 NOT 12:03:45
      xStr = Left(xVal, 1) & ":" & Mid(xVal, 2, 2) & ":" & Right(xVal, 2)
      Case 6 ' e.g., 123456 = 12:34:56
      xStr = Left(xVal, 2) & ":" & Mid(xVal, 3, 2) & ":" & Right(xVal, 2)
      Case Else
      Err.Raise 0
      End Select
      .Value = Format(TimeValue(xStr), "Short Time")
      End If
      End With
      Application.EnableEvents = True
      Exit Sub
      EndMacro:
      MsgBox "You did not enter a valid time"
      Application.EnableEvents = True
      End Sub
  • To post as a guest, your comment is unpublished.
    Steven · 1 years ago
    Thank you. Very well illustrated.