Changing file extensions in Windows 10 is a pretty simple task that anyone can do. You’ll need to tweak a setting to show file extensions and then rename your file. Just follow the steps below, and you’ll be able to change any file extension in no time.
How to Change File Extension in Windows 10
Changing a file extension in Windows 10 means you’ll be changing the letters after the dot in your file name (like .txt, .jpg, etc.). This is useful if you want to convert a file to a different format or fix a file extension issue. Here’s exactly how you can do it.
Step 1: Open File Explorer
To begin, you need to open File Explorer. Simply click on the folder icon in your taskbar or press the Windows key + E on your keyboard.
Opening File Explorer lets you see all the files and folders on your computer. This is where you’ll be changing the file extension.
Step 2: Enable File Name Extensions
Next, you have to make sure you can see the file extensions. Click on the "View" tab at the top of File Explorer, then check the box that says "File name extensions."
By enabling file name extensions, you make sure that you can see and change the extensions (like .txt, .jpg) of your files.
Step 3: Locate Your File
Find the file you want to change. Navigate through your folders until you find the file whose extension you need to change.
Make sure you know where your file is located. This will save you time and prevent any mix-ups with other files.
Step 4: Rename the File
Right-click on the file and select "Rename," or click once to highlight the file and press F2. Now, change the extension after the dot to the new extension you want.
When renaming, it’s important to only change the part after the dot, while keeping the rest of the file name intact to avoid confusion.
Step 5: Confirm the Change
Press Enter. A warning message might pop up saying that changing file extensions can make files unusable. Click "Yes" to confirm.
This step is crucial because Windows is just making sure you really want to change the extension. Once you confirm, the file extension will be changed.
After following these steps, your file will have the new extension, and you can proceed to use it as needed. You can always change it back if something goes wrong.
Tips for Changing File Extension in Windows 10
- Always make a backup of your file before changing its extension, just in case something goes wrong.
- Pay attention to file types when changing extensions; not all file types will work properly if their extension is changed.
- Be careful with executable files (.exe), as changing their extensions can make your computer vulnerable to malware.
- Use trusted software for converting file formats when simply renaming them doesn’t work.
- If in doubt, Google the new file extension to understand what type of file it creates and ensure it’s what you need.
Frequently Asked Questions
Why would I need to change a file extension?
You might need to change a file extension to convert a file to a different format, fix a file that has the wrong extension, or for compatibility with specific software.
Can changing a file extension harm my file?
Changing a file extension doesn’t change the file’s content, but it might make the file unusable if the new extension is not compatible with the file’s actual format.
Do I need special software to change file extensions?
No, you don’t need any special software to change file extensions in Windows 10. You can do it right through File Explorer.
Is it possible to hide file extensions again after changing them?
Yes, you can hide file extensions again by unchecking the "File name extensions" box in the "View" tab of File Explorer.
What should I do if I can’t see the file extension?
If you can’t see the file extension, make sure the "File name extensions" box is checked in the "View" tab of File Explorer.
Summary
- Open File Explorer
- Enable File Name Extensions
- Locate Your File
- Rename the File
- Confirm the Change
Conclusion
There you have it! Changing file extensions in Windows 10 isn’t rocket science. Whether you’re trying to fix a file with the wrong extension or convert a file to another format, these steps will guide you smoothly through the process. Remember to be cautious and always back up your files before making any changes. This simple yet essential skill can save you a ton of headaches and open up new ways to use your files.
For further reading, you might want to dive into topics like file format conversion tools or advanced file management techniques in Windows 10. Keep experimenting, keep learning, and soon you’ll be a pro at handling all your file needs!

Kermit Matthews is a freelance writer based in Philadelphia, Pennsylvania with more than a decade of experience writing technology guides. He has a Bachelor’s and Master’s degree in Computer Science and has spent much of his professional career in IT management.
He specializes in writing content about iPhones, Android devices, Microsoft Office, and many other popular applications and devices.