Custom cell format

Excel includes a variety of built-in formats that cover general, numeric, currency, percentage, exponential, date, time, and custom numeric formats. You can also design your own custom formats based on one of the built-in formats.
Format Cells example in Excel 2016

To define a custom format, follow these steps:

    1.    Enter sample text for the format in a cell, and then select that cell (Excel then displays the sample text in the new format, which helps to see the effects of your changes).

    2.    On the Home tab, in the Number group, click the Dialog Box Launcher to open the Format Cells dialog box (or choose Format Cells... in the popup menu):

Number group in Excel 2016

    3.    On the Number tab, in the Category box, select the Custom item.

Format Cells in Excel 2016

    4.    In the Type list box, select the custom format on which you want to base your new custom format. Excel displays the details for the type in the Type text box.

    5.    If the details for the type extend beyond the Type text box, double-click in the Type text box to select all of its contents, issue a Copy command (for example, press Ctrl+C), and then paste the copied text into a text editor, such as Notepad. (For a shorter type, you can work effectively in the Type text box. For a longer type, it's easier to have enough space to see the whole type at once.)

    6.    Enter the details for the four parts of the type, separating the parts from each other with a semicolon.

  • If you write two formats, the first applies to positive and zero values and the second applies to negative values.
  • If you write three formats, the first applies to positive values, the second to negative values, and the third to zero.
  • If you write four formats, they apply to positive, negative, zero, and text values, respectively.

    7.    If you're working in a text editor, copy what you typed and paste it into the Type text box. Check the sample text to make sure it seems to be correct.

    8.    Click the OK button.