This free Excel macro formats selected cells in the Scientific number format in Excel. This means the cell will be put into the form of powers, which means that trailing zeros will be removed and a number representing those zeros input after an "E" in the cell.
This number format in Excel is especially good for display very large number that have many zeros. This format will help to reduce worksheet clutter and will generally make spreadsheets with very large numbers easier to read and understand.
Sub Format_Cell_Scientific()
Selection.NumberFormat = "0.00E+00"
End Sub