How to Remove Duplicates in Google Sheets: A Step-by-Step Guide

Removing duplicates in Google Sheets can seem like a daunting task, but it’s actually quite straightforward. With a few simple steps, you can clean up your data and ensure that it’s accurate and free of repetitions. Whether you’re managing a mailing list, tracking inventory, or organizing a project, eliminating duplicates is essential for maintaining a tidy and efficient spreadsheet.

Step by Step Tutorial: How to Remove Duplicates in Google Sheets

Before diving into the steps, it’s important to understand what we’re trying to achieve. Removing duplicates means that we’re identifying and deleting any repeated data within our Google Sheets document. This is crucial for data accuracy and can save you from making decisions based on incorrect information.

Step 1: Select the data range

The first step is to select the range of data where you want to remove duplicates.

After selecting the data range, make sure you’ve included all the columns that might have duplicates. If you’re not sure which columns to include, it’s better to select more rather than less to ensure that all duplicates are caught.

Step 2: Access the Data menu

Once your data range is selected, click on the ‘Data’ menu at the top of your Google Sheets.

In the Data menu, you’re looking for the ‘Remove duplicates’ option. It’s usually located towards the bottom of the drop-down menu.

Step 3: Use the Remove Duplicates feature

In the Data menu, select ‘Remove duplicates.’

A new window will pop up, allowing you to choose which columns to check for duplicates. If your data range includes headers, make sure to tick the ‘Data has header row’ box.

Step 4: Configure your duplicate removal

Decide which columns you want to check for duplicates and then click ‘Remove duplicates.’

If you’re working with a lot of data, it might take a few seconds for Google Sheets to process your request. Once it’s done, a message will appear telling you how many duplicates were found and removed.

Step 5: Review the results

Check your data to make sure the correct duplicates have been removed.

It’s always a good idea to review the changes to your sheet. Look for any anomalies or data that might have been incorrectly identified as a duplicate.

After completing these steps, your Google Sheets data should be free from duplicates. This means you can proceed with analyzing and utilizing your data without the worry of inaccuracies due to repeated entries.

Tips for Removing Duplicates in Google Sheets

  • Always make a copy of your data before attempting to remove duplicates, just in case something goes wrong.
  • If you have a large dataset, consider removing duplicates in smaller batches to avoid overwhelming the system.
  • Use the ‘Sort range’ feature to organize your data before removing duplicates; this can sometimes make it easier to spot repetitions.
  • Remember that Google Sheets considers case-sensitive differences as unique entries, so ‘Example’ and ‘example’ would not be seen as duplicates.
  • Utilize the ‘Conditional Formatting’ feature to highlight duplicates before you remove them, giving you a visual aid in spotting issues.

Frequently Asked Questions

What if I accidentally remove data that wasn’t a duplicate?

You can use the ‘Undo’ feature (Ctrl + Z on Windows, Command + Z on Mac) to revert your changes if you act quickly. Otherwise, restoring a previous version of your spreadsheet from the ‘Version history’ is your best bet.

Can I remove duplicates based on a single column?

Yes, you can choose to check for duplicates in just one column or multiple columns, depending on your needs.

Will removing duplicates reorganize my data?

No, removing duplicates will not change the order of your remaining data.

Can I remove duplicates across multiple sheets at once?

No, the ‘Remove duplicates’ feature only works on the currently selected sheet. You’ll need to repeat the process for each sheet in your document.

Is there a limit to how much data I can check for duplicates?

There’s no set limit, but performance may vary based on the size of your dataset and your computer’s processing power.


  1. Select the data range.
  2. Access the ‘Data’ menu.
  3. Use the ‘Remove duplicates’ feature.
  4. Configure your duplicate removal.
  5. Review the results.


Removing duplicates in Google Sheets is a valuable skill that can save you time and ensure the accuracy of your data. By following the step-by-step tutorial outlined above, you can easily clean up your spreadsheets, making them more manageable and reliable. Keep in mind the additional tips and answers to frequently asked questions to refine your approach and handle any potential issues.

As you become more comfortable with this process, you’ll find that it’s a simple yet powerful tool in your data management arsenal. And, should you need to delve deeper into the world of Google Sheets, there are plenty of resources available to help you expand your knowledge and skills. So go ahead, give it a try, and watch as your data transforms into a clean, duplicate-free masterpiece.

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