HLOOKUP function in Google Sheets - Step-by-Step Guide

Introduction

The HLOOKUP function helps you find information in a table by looking across the top row. It is useful when your data is organized horizontally and you want to find a value below a matching header.

When you have a table with months as headers in the first row and want to find sales numbers for a specific month.

When you want to get the price of a product listed in the top row of a price list.

When you need to find a student's grade from a row of subjects listed horizontally.

When you want to retrieve data from a horizontal list without rearranging your table.

When you want to quickly match a category name in the first row and get related data below it.

Steps

Step 1: Click

- the cell where you want the result

The cell is selected and ready for input

Step 2: Type

- the formula bar

The formula starts appearing in the selected cell

💡 Start typing =HLOOKUP to see the function suggestion

Step 3: Enter

- the formula bar

The formula syntax appears: =HLOOKUP(search_key, range, index, [is_sorted])

Step 4: Replace

- search_key in the formula

The value you want to find in the top row is set

💡 You can type a value in quotes like "January" or select a cell with that value

Step 5: Replace

- range in the formula

The table range including the top row and rows below is set

💡 Select the cells that include headers and data

Step 6: Replace

- index in the formula

The row number below the top row to get the value from is set

💡 Use 2 for the first row below headers, 3 for the second, and so on

Step 7: Optionally type

- is_sorted in the formula

Set TRUE for approximate match or FALSE for exact match

💡 Usually use FALSE to find exact matches

Step 8: Press

- Enter key

The cell shows the value found below the matching header in the top row

Before vs After

Before

A table with months in row 1: January, February, March; and sales numbers in row 2: 100, 150, 120

After

Using =HLOOKUP("February", A1:C2, 2, FALSE) returns 150 in the selected cell

Settings Reference

search_key

📍 first argument in the HLOOKUP formula

The value to find in the top row of the table

Default: none

range

📍 second argument in the HLOOKUP formula

The table where the function looks for the search_key and returns data

Default: none

index

📍 third argument in the HLOOKUP formula

The row number in the range to return data from, counting from the top row as 1

Default: none

is_sorted

📍 fourth optional argument in the HLOOKUP formula

Defines if the top row is sorted for approximate match (TRUE) or exact match (FALSE)

Default: TRUE

Common Mistakes

Using the wrong row number for the index argument

The index counts from the top row as 1, so using 1 returns the header, not the data

Use 2 to get the first row of data below the headers

Not setting is_sorted to FALSE when data is not sorted

If is_sorted is TRUE or omitted, HLOOKUP may return wrong or approximate results

Always set is_sorted to FALSE for exact matches unless you know the top row is sorted

Selecting a range that does not include the top row

HLOOKUP looks only in the first row of the range for the search_key

Make sure the range includes the top row with headers

Summary

HLOOKUP finds data by searching the top row of a table and returning a value from a specified row below.

Use it when your data is arranged horizontally with headers in the first row.

Remember to set the correct row index and use FALSE for exact matches to avoid errors.