## Sum number based on if a corresponding value is unique

**Question:** How do I sum values only if a unique value exists in another column?

**Answer:**

Formula in D13:

The ranges don´t have to be adjacent.

Named ranges

List1 (A2:A11)

List2 (B2:B11)

What is named ranges?

**How to customize the formula to your excel sheet**

To copy this formula in to your excel spreadsheet you don´t need to edit the formula. Only change the named ranges.

Download excel sample file for this tutorial.

sum-only-if-unique-value-in-another-column.xls

(Excel 97-2003 Workbook *.xls)

**Functions in this article:**

**COUNTIF(**range,criteria**)**

Counts the number of cells within a range that meet the given condition

**IF(**logical_test;[value_if:true];[value_if_false]**)
**Checks whether a condition is met, and returns one value if TRUE, and another value if FALSE

**SUM(**number1,[number2],**)
**Adds all the numbers in a range of cells

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