How to Change the Column Width to mm in Excel – A Guideline

The dataset showcases information about Product, Delivery Date, Deadline to deliver the product, and delivery Status.

To change the column width to mm from the default unit inches:

Step 1 – Open Excel Options to Change Column Width

• Click File or Microsoft Office Button (Excel 2007).
• Click Options.

• In the Excel Options window, click Advanced.

Step 2 – Change Column Width Unit to mm in the Display Section

• Select Display.
• Change the measurement unit to Millimeters in Ruler units. You can also change the unit to Centimeters.
• Click OK.

Note: You can set the column width to inches or to centimeters.

Read More: How to Change Excel Column Width in Pixels

Step 3 – Some Examples to Set the Column Width to mm in Excel

Example 1- Using the Column Width Input Box

Change the width of a column by entering the width in the Column Width input box.

Step 1:

• Click the View tab, in Workbook Views, click Page Layout.

• Right-click the Header of the column.
• Choose Column Width.

Step 2:

• In the Column width input box, set the column width to mm.
• Click OK.

• This is the output.

Example 2 – Drag the Column to Change the Width in mm

Steps:

• In Page Layout, change the width of columns by dragging the boundary to the right side of the column heading.

Example 3 – Change the Width of Multiple Columns

Steps:

• Select the columns you want to change. Here, Delivery Date, Deadline, and Status.
• Drag the boundary of the outer right column (Status Column) to the right.

●    This is the output.

Example 4 – Select Cell to Change Width in mm

You can also change the width of a column or multiple columns by selecting the cell(s).

Step 1:

• Select a cell in the column you change the width. Here, Deadline: D6. You can also select multiple cells from different columns.

• In the Home tab, select Cells.
• Click Format.
• Select Column Width.

Step 2:

• In Column width, enter the column width in mm.
• Click OK.

• This is the output.

Example 5 – Using Shortcut Keys to Change the Column Width

Step 1:

• Select the column or columns to change the width.
• Hold ALT, press H, O, and W to open the Column Width window. Enter the width.
• Click OK.

Step 2:

• Go back to the Normal view in View. 

Things to Remember

• You must be in Page Layout view to have column widths in millimeters or centimeters.
• In some cases, you may find that the width is not exactly what you specified, but still very close to it.

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