How to Create a Calendar Using Excel

By Tiesha Whatley

Microsoft Excel is an optimum environment to create and maintain a calendar. Using the different cells, you can easily move from day to day to update the calendar or add in new events and appointments. It is not hard to create a calendar in Excel. Microsoft has supplied a simple CalendarMaker macro that inserts into the Visual Basic editor in Excel that will create the calendar for you. All you will need to do is copy the code to have your monthly calendar in Excel.

Step 1

Open Microsoft Excel. Click on the "Tools" menu, point to "Macro" and click on "Visual Basic Editor" if using Excel 2003 or earlier. For Excel 2007/2010, click on the "Developer" tab and then click on "Visual Basic." If you don't see the "Developer" tab, click on the "Office" button and then "Excel Options." On the first screen, click on the check box next to "Show Developer tab on the Ribbon" and then click "OK." The "Developer" tab should show now.

Step 2

Click on the "Insert" menu item in the Visual Basic Editor. Click on "Module" to start a new code module.

Step 3

Copy the first part of the following code in the new module:" Sub CalendarMaker() ' Unprotect sheet if had previous calendar to prevent error. ActiveSheet.Protect DrawingObjects:=False, Contents:=False, _ Scenarios:=False ' Prevent screen flashing while drawing calendar. Application.ScreenUpdating = False ' Set up error trapping. On Error GoTo MyErrorTrap ' Clear area a1:g14 including any previous calendar. Range("a1:g14").Clear ' Use InputBox to get desired month and year and set variable ' MyInput. MyInput = InputBox("Type in Month and year for Calendar ") ' Allow user to end macro with Cancel in InputBox. If MyInput = "" Then Exit Sub ' Get the date value of the beginning of inputted month. StartDay = DateValue(MyInput) ' Check if valid date but not the first of the month ' -- if so, reset StartDay to first day of month. If Day(StartDay) <> 1 Then StartDay = DateValue(Month(StartDay) & "/1/" & _ Year(StartDay)) End If ' Prepare cell for Month and Year as fully spelled out. Range("a1").NumberFormat = "mmmm yyyy" ' Center the Month and Year label across a1:g1 with appropriate ' size, height and bolding. With Range("a1:g1") .HorizontalAlignment = xlCenterAcrossSelection .VerticalAlignment = xlCenter .Font.Size = 18 .Font.Bold = True .RowHeight = 35 End With ' Prepare a2:g2 for day of week labels with centering, size, ' height and bolding. With Range("a2:g2") .ColumnWidth = 11 .VerticalAlignment = xlCenter .HorizontalAlignment = xlCenter .VerticalAlignment = xlCenter .Orientation = xlHorizontal .Font.Size = 12 .Font.Bold = True .RowHeight = 20 End With ' Put days of week in a2:g2. Range("a2") = "Sunday" Range("b2") = "Monday" Range("c2") = "Tuesday" Range("d2") = "Wednesday" Range("e2") = "Thursday" Range("f2") = "Friday" Range("g2") = "Saturday" ' Prepare a3:g7 for dates with left/top alignment, size, height ' and bolding. With Range("a3:g8") .HorizontalAlignment = xlRight .VerticalAlignment = xlTop .Font.Size = 18 .Font.Bold = True .RowHeight = 21 End With' Put inputted month and year fully spelling out into "a1". Range("a1").Value = Application.Text(MyInput, "mmmm yyyy") ' Set variable and get which day of the week the month starts. DayofWeek = WeekDay(StartDay) ' Set variables to identify the year and month as separate ' variables. CurYear = Year(StartDay) CurMonth = Month(StartDay) ' Set variable and calculate the first day of the next month. FinalDay = DateSerial(CurYear, CurMonth + 1, 1) ' Place a "1" in cell position of the first day of the chosen ' month based on DayofWeek." Remove the quotation marks on the first and last line of the code.

Step 4

Copy the rest of the code that takes the format from the code above and create the actual calendar. Paste the code right under where the code from above ends. "Select Case DayofWeek Case 1 Range("a3").Value = 1 Case 2 Range("b3").Value = 1 Case 3 Range("c3").Value = 1 Case 4 Range("d3").Value = 1 Case 5 Range("e3").Value = 1 Case 6 Range("f3").Value = 1 Case 7 Range("g3").Value = 1 End Select ' Loop through range a3:g8 incrementing each cell after the "1" ' cell. For Each cell In Range("a3:g8") RowCell = cell.Row ColCell = cell.Column ' Do if "1" is in first column. If cell.Column = 1 And cell.Row = 3 Then ' Do if current cell is not in 1st column. ElseIf cell.Column <> 1 Then If cell.Offset(0, -1).Value >= 1 Then cell.Value = cell.Offset(0, -1).Value + 1 ' Stop when the last day of the month has been ' entered. If cell.Value > (FinalDay - StartDay) Then cell.Value = "" ' Exit loop when calendar has correct number of ' days shown. Exit For End If End If ' Do only if current cell is not in Row 3 and is in Column 1. ElseIf cell.Row > 3 And cell.Column = 1 Then cell.Value = cell.Offset(-1, 6).Value + 1 ' Stop when the last day of the month has been entered. If cell.Value > (FinalDay - StartDay) Then cell.Value = "" ' Exit loop when calendar has correct number of days ' shown. Exit For End If End If Next ' Create Entry cells, format them centered, wrap text, and border ' around days. For x = 0 To 5 Range("A4").Offset(x * 2, 0).EntireRow.Insert With Range("A4:G4").Offset(x * 2, 0) .RowHeight = 65 .HorizontalAlignment = xlCenter .VerticalAlignment = xlTop .WrapText = True .Font.Size = 10 .Font.Bold = False ' Unlock these cells to be able to enter text later after ' sheet is protected. .Locked = False End With ' Put border around the block of dates. With Range("A3").Offset(x * 2, 0).Resize(2, _ 7).Borders(xlLeft) .Weight = xlThick .ColorIndex = xlAutomatic End With With Range("A3").Offset(x * 2, 0).Resize(2, _ 7).Borders(xlRight) .Weight = xlThick .ColorIndex = xlAutomatic End With Range("A3").Offset(x * 2, 0).Resize(2, 7).BorderAround _ Weight:=xlThick, ColorIndex:=xlAutomatic Next If Range("A13").Value = "" Then Range("A13").Offset(0, 0) _ .Resize(2, 8).EntireRow.Delete ' Turn off gridlines. ActiveWindow.DisplayGridlines = False ' Protect sheet to prevent overwriting the dates. ActiveSheet.Protect DrawingObjects:=True, Contents:=True, _ Scenarios:=True ' Resize window to show all of calendar (may have to be adjusted ' for video configuration). ActiveWindow.WindowState = xlMaximized ActiveWindow.ScrollRow = 1 ' Allow screen to redraw with calendar showing. Application.ScreenUpdating = True ' Prevent going to error trap unless error found by exiting Sub ' here. Exit Sub ' Error causes msgbox to indicate the problem, provides new input box, ' and resumes at the line that caused the error. MyErrorTrap: MsgBox "You may not have entered your Month and Year correctly." _ & Chr(13) & "Spell the Month correctly" _ & " (or use 3 letter abbreviation)" _ & Chr(13) & "and 4 digits for the Year" MyInput = InputBox("Type in Month and year for Calendar") If MyInput = "" Then Exit Sub Resume End Sub"Remove the quotation marks on the first and last line of the code. Click on the "Save" icon on the toolbar. Click on the "File" menu item and then "Close and Return to Microsoft Excel."

Step 5

Run the "CalendarMaker" module. In Excel 2007/2010, click on the "Developer" tab and then click on "Macros." In earlier versions of Excel, click on "Tools," point to "Macros" and then click on "Macros." Select the "CalendarMaker" macro from the list in the window that pops up and then click on "Run."