index

 

The INDEX function in Excel is a powerful tool that allows you to retrieve a value from a specific position within a range or array. It can be used in various ways, including with data and formulas. Below are 10 examples of how to use the INDEX function, including both data and formula applications.

1. Basic Usage of INDEX

Retrieve a value from a specific cell in a range.

Formula:

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=INDEX(A1:C10, 2, 3)

Explanation:
This formula returns the value in the 2nd row and 3rd column of the range A1:C10.

2. INDEX with MATCH

Use INDEX with MATCH to look up a value dynamically.

Formula:

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=INDEX(A1:C10, MATCH("Target", A1:A10, 0), 3)

Explanation:
This formula finds the row where "Target" appears in column A and returns the corresponding value from the 3rd column.

3. INDEX with Multiple Criteria

Combine INDEX with multiple MATCH functions for more complex lookups.

Formula:

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=INDEX(A1:C10, MATCH(1, (A1:A10="Criteria1")*(B1:B10="Criteria2"), 0), 3)

Explanation:
This formula uses array operations to match rows where both criteria are met and returns the value from the 3rd column.

4. INDEX with Dynamic Range

Use INDEX to create a dynamic range.

Formula:

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=SUM(A1:INDEX(A1:A10, 5))

Explanation:
This formula sums the first 5 cells in column A.

5. INDEX with Array Formula

Use INDEX to return an array.

Formula:

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=INDEX(A1:C10, 0, 2)

Explanation:
This formula returns the entire 2nd column from the range A1:C10.

6. INDEX with Conditional Formatting

Use INDEX in conditional formatting to highlight specific cells.

Formula:

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=INDEX($A$1:$C$10, ROW(), COLUMN()) > 100

Explanation:
This formula can be used in conditional formatting to highlight cells in the range A1:C10 where the value is greater than 100.

7. INDEX with Data Validation

Use INDEX to create a dynamic dropdown list.

Formula:

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=INDEX(A1:A10, MATCH("Criteria", B1:B10, 0))

Explanation:
This formula can be used in data validation to create a dropdown list based on a match in another column.

8. INDEX with OFFSET

Combine INDEX with OFFSET for more flexible range selection.

Formula:

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=SUM(OFFSET(INDEX(A1:C10, 2, 1), 0, 0, 3, 3))

Explanation:
This formula sums a 3x3 range starting from the cell in the 2nd row and 1st column of A1:C10.

9. INDEX with INDIRECT

Use INDEX with INDIRECT to reference a dynamic range.

Formula:

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=INDEX(INDIRECT("A1:C" & COUNTA(A:A)), 2, 3)

Explanation:
This formula dynamically adjusts the range based on the number of non-empty cells in column A and retrieves the value in the 2nd row and 3rd column.

10. INDEX with Array Constants

Use INDEX with array constants for quick lookups.

Formula:

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=INDEX({1,2,3;4,5,6;7,8,9}, 2, 3)

Explanation:
This formula returns the value 6 from the 2nd row and 3rd column of the array constant {1,2,3;4,5,6;7,8,9}.

Summary

The INDEX function is versatile and can be used in various scenarios, from simple lookups to complex dynamic ranges. By combining it with other functions like MATCH, OFFSET, and INDIRECT, you can create powerful and flexible formulas to manage and analyze your data effectively