| 
    
     |  | ▼櫛田 さん: 
 > For i = 3 To Range("C3").CurrentRegion.Rows.Count
 
 CurrentRegion.Rows.Countだと、行数になりますが?
 iは最終セルの行番号まで繰り返すべき。
 
 Sub test()
 Dim i As Long, j As Long
 
 For i = 3 To Cells(Rows.Count, 2).End(xlUp).Row
 For j = 3 To Cells(2, Columns.Count).End(xlToLeft).Column
 Cells(i, j).FormulaR1C1 = "=R2C*RC2"
 Next
 Next
 
 End Sub
 
 ------------
 行数で繰り返すなら
 
 Sub test2()
 Dim r As Range
 Dim i As Long, j As Long
 
 Set r = Range("C3").CurrentRegion
 For i = 2 To r.Rows.Count
 For j = 2 To r.Columns.Count
 r(i, j).FormulaR1C1 _
 = "=R" & r.Row & "C*RC" & r.Column
 Next
 Next
 
 End Sub
 
 
 ------------
 なお繰り返しは不要で、一括で数式を挿入できます。
 
 Sub test3()
 Dim r As Range
 
 Set r = Range("C3").CurrentRegion
 Intersect(r, r.Offset(1, 1)).FormulaR1C1 _
 = "=R" & r.Row & "C*RC" & r.Column
 
 End Sub
 
 |  |