Right click sheet tab>view code>insert this>change column to suit needs.
Private Sub Worksheet_Change(ByVal Target As Range)
If Target.Column <> 1 Then Exit Sub
Application.EnableEvents = file
Target.Value = UCase(Target)
Application.EnableEvents = True
End Sub
Right click the sheet tab>View code and paste the below code which will work
on Col A
Private Sub Worksheet_Change(ByVal Target As Range)
Application.EnableEvents = False
If Not Application.Intersect(Target, Range("A:A")) Is Nothing Then
If Target.Count = 1 Then Target = UCase(Target.Text)
End If
Application.EnableEvents = True
End Sub
This is one way, using column A as the target column. The code goes into
the Sheet code module. Right click the sheet tab and select view code to
open the code windowl
Private Sub Worksheet_Change(ByVal Target As Range)
If Target.Cells.Count > 1 Then Exit Sub
If Not Intersect(Target, Range("A:A")) Is Nothing Then
Target.Value = UCase(Target.Value)
End If