You can calculate the total of a specific range within a table by leveraging the INDEX function in Excel. This technique is especially useful when pulling important data points from a dataset to display on an Excel Dashboard. To achieve this, begin your formula with SUM combined with INDEX.

The structure will resemble: =SUM(INDEX(Array, Row_Num, Column_Num))

Here, the Array refers to your data table, the Row_Num is left empty, and the Column_Num specifies the column (by number) you'd like to sum.

When you analyze the formula (by selecting the INDEX portion and pressing F9), you’ll observe something like: =SUM({8959;7840;7507;6690;5802;5487;3949;3836;3587;3210})

Essentially, you're summing an array extracted from your table. The example below demonstrates how this works in practice.

Key Takeaways

• Build Dynamic Ranges – INDEX enables you to set adaptable start and end positions within a range for summation.
• Eliminate Hardcoded References – Using INDEX results in formulas that automatically adjust when your data expands or changes.
• Pair with SUM – Embed the INDEX function within SUM to total variable sections of your data.
• Ideal for Interactive Dashboards – Perfect for summing values between two lookup points without needing extra helper columns.
• Compatible with Named Ranges – INDEX works seamlessly with both standard cell ranges and named ranges, leading to cleaner, more readable formulas.

Table of Contents

How to Sum a Range Using the INDEX Function

STEP 1: Begin by nesting the INDEX function inside the SUM function.

=SUM(INDEX

The Index arguments:

array

Which range or table are we using?

Select the cell range from which you want to retrieve values:

=SUM(INDEX($C$12:$E$21,

row_num

Which row should be returned?

Since we want to sum all sales values, we don’t need to specify a single row. Leave this blank:

=SUM(INDEX($C$12:$E$21,,

column_num

Which column should be returned?

The sales data is in the second column of the selected range, so input 2:

=SUM(INDEX($C$12:$E$21,,2))

Alternatively, instead of a static column number, you can use INDEX with MATCH for more flexibility!

Now you can obtain the Total Sales:

STEP 2: Let’s apply the same logic with the AVERAGE function. Start by placing the INDEX function inside AVERAGE.

=AVERAGE(INDEX

The Index Function Excel arguments:

array

What is the data range or table?

Point to the cell range containing the data you want to use:

=AVERAGE(INDEX($C$12:$E$21,

row_num

Which row do you want to return?

We are averaging all unit values, so no specific row is needed. Leave it blank:

=AVERAGE(INDEX($C$12:$E$21,,

column_num

Which column should be used?

Units are in the third column of the range, so enter 3:

=AVERAGE(INDEX($C$12:$E$21,,3))

Instead of a fixed column number, consider using INDEX MATCH to make the formula even more dynamic!

Now you can calculate the Average Units Sold:

Frequently Asked Questions

Why use INDEX in a SUM formula?
It allows you to define a dynamic range that updates based on row or column inputs, making it perfect for evolving datasets.

Can you give an example of summing a range with INDEX?
=SUM(INDEX(A1:A10, 3):INDEX(A1:A10, 7)) adds values from the 3rd to the 7th cell in A1:A10.

Does INDEX work with columns too?
Yes, INDEX functions effectively with columns. Example: =SUM(INDEX(A1:J1, 2):INDEX(A1:J1, 5)) sums columns 2 to 5 in row 1.

How does INDEX make formulas more dynamic?
By combining INDEX with functions like MATCH, you can create ranges that automatically update based on criteria.

Is there a performance advantage with INDEX in large spreadsheets?
Yes, INDEX is non-volatile and more efficient than functions like OFFSET, especially beneficial in large or complex workbooks.

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