Excel Tutorial: How To Map Two Excel Sheets


Mapping two excel sheets is a critical skill for anyone working with data in Excel. It allows you to compare and combine information from two different sources, making it easier to analyze and manage large datasets. In this tutorial, we will provide a brief overview of the steps involved in mapping two excel sheets, so you can streamline your data management process and make informed decisions based on accurate and consolidated information.

Key Takeaways

  • Mapping two excel sheets is important for comparing and combining information from different sources.
  • Identifying key columns and commonalities in the data is crucial for successful mapping.
  • The VLOOKUP function is a powerful tool for mapping data from one sheet to another.
  • Sorting and filtering data before mapping can streamline the process and improve accuracy.
  • Consolidating mapped data into a new sheet and reviewing for accuracy is essential for data management.

Understanding the Data

Before mapping two excel sheets, it's important to understand the data in each sheet to ensure a successful mapping process. Here are some key steps to help you understand the data:

A. Identifying the key columns in each excel sheet
  • Column Headers: Take note of the column headers in each excel sheet and identify the key columns that you want to map between the two sheets.
  • Data Types: Understand the data types of the key columns, such as text, numbers, dates, or formulas, to ensure a proper mapping.
  • Unique Identifiers: Look for unique identifiers or common fields that can be used to match and map the data between the two sheets.

B. Reviewing the data to understand any commonalities
  • Data Patterns: Review the data in both sheets to identify any commonalities or patterns that can help in mapping the data accurately.
  • Data Quality: Check the data quality and consistency in both sheets to ensure that the mapping process will yield accurate results.
  • Data Relationships: Understand the relationships between the data in both sheets to determine how they can be mapped together effectively.

Using VLOOKUP Function

VLOOKUP is a powerful function in Excel that allows you to map data from one sheet to another. It is widely used for tasks such as combining data from multiple sheets, creating reports, and analyzing data.

A. Understanding the concept of VLOOKUP

VLOOKUP stands for "vertical lookup," and it is used to search for a value in the first column of a table and retrieve a value in the same row from another column. It is commonly used to perform approximate or exact matches between two datasets.

B. How to use VLOOKUP to map data from one sheet to another

VLOOKUP function has four parameters: lookup_value, table_array, col_index_num, and range_lookup. To use VLOOKUP to map data from one sheet to another, follow these steps:

  • Step 1: Identify the common field between the two sheets that will be used to map the data.
  • Step 2: In the destination sheet, enter the VLOOKUP formula in the cell where you want the mapped data to appear. The formula syntax is =VLOOKUP(lookup_value, table_array, col_index_num, range_lookup).
  • Step 3: Enter the cell reference of the common field in the source sheet as the lookup_value.
  • Step 4: Enter the range of cells in the source sheet that contains the data to be mapped as the table_array.
  • Step 5: Enter the column number in the table_array that contains the data you want to map as the col_index_num. For example, if the data you want to map is in the third column of the table_array, col_index_num would be 3.
  • Step 6: Determine whether you want an exact match or an approximate match by specifying either TRUE or FALSE in the range_lookup parameter.
  • Step 7: Press Enter to apply the formula and map the data from the source sheet to the destination sheet.

Sorting and Filtering Data

Before mapping two excel sheets, it is crucial to sort and filter the data to ensure accuracy and consistency in the mapping process. This step helps in identifying and organizing the relevant data that needs to be mapped.

The importance of sorting and filtering data before mapping

  • Identifying and organizing relevant data
  • Ensuring accuracy and consistency in mapping
  • Reducing errors and omissions in the mapping process

How to effectively sort and filter data in Excel

  • Click on the column header of the data you want to sort
  • Go to the "Data" tab and select "Sort A to Z" or "Sort Z to A" for ascending or descending order
  • To filter data, click on the "Filter" button in the "Data" tab
  • Use the filter dropdowns to select specific criteria for filtering the data

Consolidating Mapped Data

When working with multiple Excel sheets, it can be helpful to map and consolidate the data into a new sheet for easier analysis and reporting. Let's take a look at the process of compiling mapped data and reviewing it for accuracy and completeness.

A. Compiling the mapped data into a new sheet

Once you have mapped the data from two or more Excel sheets, you can start compiling the mapped data into a new sheet. Here's how you can do it:

  • Copy and paste: Select the mapped data from the original sheets and copy them. Then, navigate to a new sheet where you want to consolidate the data and paste it there.
  • Use formulas: Another way to compile the mapped data is by using Excel formulas such as VLOOKUP or INDEX/MATCH to pull the relevant data from the original sheets into the new sheet.
  • Power Query: For more advanced users, Power Query can be used to merge and append data from multiple sources into a single table.

B. Reviewing the consolidated data for accuracy and completeness

Once you have compiled the mapped data into a new sheet, it's important to review it to ensure accuracy and completeness. Here are some steps to consider:

  • Double-check mappings: Verify that the data from the original sheets has been accurately mapped and consolidated in the new sheet.
  • Check for duplicates: Look for any duplicate entries that may have been inadvertently included during the consolidation process.
  • Validate the data: Ensure that the consolidated data aligns with your expectations and that all necessary information has been included.

Troubleshooting Common Issues

When mapping two excel sheets, it is not uncommon to encounter errors or issues that can hinder the process. Here are some common problems that may arise and how to address them:

A. Addressing errors that may occur during the mapping process

1. Incorrect data types

One common issue when mapping excel sheets is encountering data type errors. This can occur when the data in one sheet is not compatible with the data in the other sheet. To address this, make sure to double-check the data types in both sheets and ensure they match up properly.

2. Mismatched or missing data

Another issue that may arise is finding mismatched or missing data during the mapping process. This can happen when there are inconsistencies in the data across the sheets. To troubleshoot this, carefully review the data and verify that all necessary information is present and accurately aligned.

B. Tips for troubleshooting and resolving mapping issues

1. Use Excel's error-checking tools

Excel provides several built-in tools for error-checking, such as the 'Error Checking' feature and the 'Trace Precedents' and 'Trace Dependents' functions. Utilize these tools to identify and resolve any errors or inconsistencies in the mapping process.

2. Verify cell references and formulas

When mapping excel sheets, it is important to verify that all cell references and formulas are accurate and up-to-date. If there are errors in the formulas or cell references, it can lead to mapping issues. Take the time to review and double-check all references and formulas to ensure they are correct.

3. Seek assistance from online resources or forums

If you are facing complex mapping issues that you are unable to resolve on your own, consider seeking assistance from online resources or forums. There are many excel experts and community forums available where you can seek advice and guidance on troubleshooting mapping problems.


Mapping two excel sheets can be a valuable skill for any professional working with data. By following the key steps outlined in this tutorial, you can easily link and compare data from multiple sources, allowing for more efficient analysis and reporting. The benefits of effectively mapping data are numerous, from identifying trends and patterns to improving decision-making processes.

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