Home > Books > 100 Top Tips: Microsoft Excel > Removing duplicate data in a spreadsheet

Tutorial: How to remove duplicate data in a spreadsheet in Excel

If your spreadsheet includes duplicate data, you can tidy it up using the Remove Duplicates tool in Excel. Discover how in this tutorial by Sean McManus, from the book 100 Top Tips: Microsoft Excel

You can remove duplicated data in a spreadsheet, which can easily happen if data such as mailing list information is combined from multiple sources.

  1. Click in your data so Excel can find it.

  2. Click Remove Duplicates on the Data tab of the ribbon. You'll find it in the Data Tools group.

  3. Select the columns that you want to check for duplicate entries. It's safest to keep them all selected. If you just selected the First Name and Last Name (for example), two different people who share a name would be identified as duplicates, even though they have different addresses. One of them would be automatically deleted. This doesn't happen if you select the address fields as well.

    screenshot of Excel showing the Remove Duplicates dialog box

  4. Click OK. Beware, though, as that might delete rows from your spreadsheet. Use Undo immediately to bring them back if you made a mistake.


Where next?


About 100 Top Tips: Microsoft Excel

This tutorial is from 100 Top Tips: Microsoft Excel. The powerful pocketbook helps you to learn more from your data, be more productive with Excel, and improve the accuracy of your spreadsheets. It's packed with shortcuts, tips, and hacks for Excel that solve everyday business problems. Find out more and download a free PDF sampler here, and order the book online here.

Book cover: 100 Top Tips: Microsoft Excel

Buy the book here

Credits

© Sean McManus. All rights reserved.

Visit www.sean.co.uk for free chapters from Sean's coding books (including Mission Python, Scratch Programming in Easy Steps and Coder Academy) and more!

Discover my latest books

100 Top Tips: Microsoft Excel

100 Top Tips: Microsoft Excel

Power up your Microsoft Excel skills with this powerful pocket-sized book of tips that will save you time and help you learn more from your spreadsheets.

Scratch Programming in Easy Steps

Scratch Programming IES

This book, now fully updated for Scratch 3, will take you from the basics of the Scratch language into the depths of its more advanced features. A great way to start programming.

Mission Python book

Mission Python

Code a space adventure game in this Python programming book published by No Starch Press.

Cool Scratch Projects in Easy Steps book

Cool Scratch Projects in Easy Steps

Discover how to make 3D games, create mazes, build a drum machine, make a game with cartoon animals and more!

Raspberry Pi For Dummies

Raspberry Pi For Dummies

Set up your Raspberry Pi, then learn how to use the Linux command line, Scratch, Python, Sonic Pi, Minecraft and electronics projects with it.

Earworm

Earworm

In this entertaining techno-thriller for adults, Sean McManus takes a slice through the music industry: from the boardroom to the stage; from the studio to the record fair.

Scratch and Raspberry Pi resources

Scratch cat with balloons invites you to visit my Scratch resources

Sean's Scratch Resources

Tips, tutorials and free book chapters for Scratch, a coding language widely used in schools.

Four LEDs on a breadboard connected to a Raspberry Pi

Sean's Raspberry Pi Resources

Tutorials and guides for the Raspberry Pi, a budget computer perfect for learning to program.

Walking astronaut from Mission Python book Top | Search | Help | Privacy | Access Keys | Contact me
Home | Blog | Copywriting Services | Books | Free book chapters | Articles | Music | Photos | Games | Shop | About