Dynamic Named Range in Excel

A dynamic named range expands automatically when you add a value to the range.

1. For example, select the range A1:A4 and name it Prices.

2. Calculate the sum.

3. When you add a value to the range, Excel does not update the sum.

To expand the named range automatically when you add a value to the range, execute the following the following steps.

Worked Example: How to get relative column numbers in a range in Excel

4. On the Formulas tab, in the Defined Names group, click Name Manager.

5. Click Edit.

6. Click in the “Refers to” box and enter the formula =OFFSET($A$1,0,0,COUNTA($A:$A),1)

Worked Example: Automatically fill series of cells in Excel using AutoFill

Explanation: the OFFSET function takes 5 arguments. Reference: $A$1, rows to offset: 0, columns to offset: 0, height: COUNTA($A:$A), width: 1. COUNTA($A:$A) counts the number of values in column A that are not empty. When you add a value to the range, COUNTA($A:$A) increases. As a result, the range returned by the OFFSET function expands.

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7. Click OK and Close.

8. Now, when you add a value to the range, Excel updates the sum automatically.