You can select all formulas using F5>Special>Formulas
But you cannot delete/remove them without losing the results of those formulas
unless you copy/paste values first or deal with them through VBA code.
Sub test()
For Each cell In Selection
If cell.HasFormula Then
cell.Value = cell.Value
End If
Next
End Sub
What do you wish to do. Perhaps we could help.
Gord Dibben MS Excel MVP