Formula Uses Formatting of First Cell in Range

CAUSE

This behavior is by design of Microsoft Excel. The number format used in the first cell in the range that you are referencing is applied to the cell that contains the formula. This behavior also occurs when you use the AutoSum button to sum a range of cells. For example, when you enter the following on your worksheet

   A1: $45.00
   A2: 3
   A3: 2
   A4: =SUM(A1:A3)
				

the value $50.00 appears in cell A4 because of the currency number formatting applied to cell A1.

NOTE: The formatting is not dynamic; that is, when you change the number formatting for a cell that is referenced in an existing formula, the formatting of the cell that contains the formula is not changed.

Microsoft Excel Versions 7.0 and Later

In Microsoft Excel versions 7.0 and later, the formatting in the first cell is also used by the AutoCalculate value displayed in the status bar. Note that in versions 7.0 and later, this behavior is more visible than in earlier versions of Microsoft Excel because of the special number formats: Social Security, Phone Number, and Zip Code. For example, if your worksheet contains the following values

   A1: 123-45-6789
   A2: 1
   A3: 2
   A4: 3
   A5: 4
				

where the Social Security number format is applied to cell A1, when you select the range A1:A5, the status bar displays the following value (assuming that the SUM function is selected for the AutoCalculate feature):

   SUM=123-45-6799