Option Explicit
Const LettresDiacritiques = "ÀÁÂÃÄÅÇÈÉÊËÌÍÎÏÑÒÓÔÕÖÙÚÛÜÝŸàáâãäåçèéêëìíîïñòóôõöùúûüýÿ"
Sub a()
Dim i As Integer
Dim S As String
[C3].Value = LettresDiacritiques
'[C:C].EntireColumn.AutoFit
For i = 1 To Len(LettresDiacritiques)
S = S & Hex(Asc(Mid(LettresDiacritiques, i, 1))) & " "
Next i
[C4].Value = S
End Sub