How to remove leading and trailing spaces from all cells of a excel sheet at once - excel

Question

I have a excel sheet which contains lots of data with leading and trailing spaces.
Manually removing these spaces with TRIM() takes lot of time.
How can I do this efficiently.

Answer 1

Try this small macro:
Sub KleanUp()
Dim r As Range
For Each r In ActiveSheet.UsedRange
v = r.Value
If v <> "" Then
If Not r.HasFormula Then
r.Value = Trim(v)
End If
End If
Next r
End Sub
This macro will not affect internal spaces or cells containing formulas.

Answer 2

To do this efficiently use a variant array, something like:
Sub VBATrim()
Dim rng1 As Range
Dim rngArea As Range
Dim lngRow As Long
Dim lngCol As Long
Dim lngCalc As Long
Dim X()
On Error Resume Next
Set rng1 = Application.InputBox("Select range for the replacement of non-number", "User select", Selection.Address, , , , , 8)
If rng1 Is Nothing Then Exit Sub
On Error GoTo 0
'Speed up the code by turning off screenupdating and setting calculation to manual
'Disable any code events that may occur when writing to cells
With Application
lngCalc = .Calculation
.ScreenUpdating = False
.Calculation = xlCalculationManual
.EnableEvents = False
End With
'Test each area in the user selected range
'Non contiguous range areas are common when using SpecialCells to define specific cell types to work on
For Each rngArea In rng1.Areas
'The most common outcome is used for the True outcome to optimise code speed
If rngArea.Cells.Count > 1 Then
'If there is more than once cell then set the variant array to the dimensions of the range area
'Using Value2 provides a useful speed improvement over Value. On my testing it was 2% on blank cells, up to 10% on non-blanks
X = rngArea.Value2
For lngRow = 1 To rngArea.Rows.Count
For lngCol = 1 To rngArea.Columns.Count
'replace the leading zeroes
X(lngRow, lngCol) = Trim(X(lngRow, lngCol))
Next lngCol
Next lngRow
'Dump the updated array sans leading zeroes back over the initial range
rngArea.Value2 = X
Else
'caters for a single cell range area. No variant array required
rngArea.Value = Trim(rngArea.Value)
End If
Next rngArea
'cleanup the Application settings
With Application
.ScreenUpdating = True
.Calculation = lngCalc
.EnableEvents = True
End With
End Sub