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What Is an XLK File?
This is an Excel file format that serves as a backup of an XLS document
By Tim Fisher Tim Fisher Senior Vice President & Group General Manager, Tech & Sustainability Emporia State University Tim Fisher has more than 30 years' of professional technology experience.
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Lily Watson Moderator
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He's been writing about tech for more than two decades and serves as the VP and General Manager of Lifewire. lifewire's editorial guidelines Updated on October 12, 2022 Tweet Share Email Tweet Share Email
In This Article
Expand Jump to a Section XLK File Meaning How to Open One How to Convert One More Information Troubleshooting
What to Know
An XLK file is created by MS Excel as a backup copy of an XLS file. Excel and LibreOffice Calc can open an XLK file
Convert XLK to XLS, PDF, CSV, XLSX, etc., with those same programs.
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David Cohen Member
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This article describes what an XLK file is and how to open or convert one.
What Is an XLK File
A file with the XLK file extension is a backup file created in some versions of Microsoft Excel.
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Hannah Kim 4 minutes ago
It's built automatically while an XLS file is being edited. Excel does this in case something goes w...
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Isaac Schmidt 2 minutes ago
XLK files may also be created when exporting information from Microsoft Access into Excel. The BAK f...
It's built automatically while an XLS file is being edited. Excel does this in case something goes wrong with the document. If, for example, the file is corrupted to the point that it can't be used any longer, the XLK file acts as a recovery file.
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Emma Wilson 3 minutes ago
XLK files may also be created when exporting information from Microsoft Access into Excel. The BAK f...
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Noah Davis 20 minutes ago
How to Turn on AutoSave in Excel
How to Open an XLK File
XLK files are most commonly op...
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Hannah Kim Member
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XLK files may also be created when exporting information from Microsoft Access into Excel. The BAK file format is another backup file used in Excel.
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Victoria Lopez 2 minutes ago
How to Turn on AutoSave in Excel
How to Open an XLK File
XLK files are most commonly op...
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Liam Wilson Member
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How to Turn on AutoSave in Excel
How to Open an XLK File
XLK files are most commonly opened using Excel, but the free LibreOffice Calc program can open them, too. Your XLK file is most likely an Excel backup file, but something else you can try to see if it's in another format is to open it with a text editor.
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Madison Singh Member
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Even if the file isn't readable/usable, you'll be able to see if there's any text within it that might help you determine what program was used to build it, which might lead you to a compatible file opener. Modern versions of Excel don't make XLK files, but you can still access AutoRecovered versions of open documents. In Windows, these are saved in your user account's \AppData\Roaming\Microsoft\Excel\ folder.
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Ethan Thomas 15 minutes ago
Learn how to recover an Excel file if you don't see XLK files on your computer.
How to Convert ...
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Liam Wilson Member
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Learn how to recover an Excel file if you don't see XLK files on your computer.
How to Convert an XLK File
Opening an XLK file in Excel is just like opening an XLS file, which means you can use Excel's File > Save As menu to convert one to XLSX or any of Excel's other formats.
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Ella Rodriguez 7 minutes ago
LibreOffice Calc supports some of the same formats as Excel. You can convert an XLK file in Calc by ...
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Ella Rodriguez 15 minutes ago
More Information on XLK Files
You can enable Excel backups on a per-document basis. When ...
LibreOffice Calc supports some of the same formats as Excel. You can convert an XLK file in Calc by opening the file and then using the File > Save As option. It can also be converted to PDF with Calc's File > Export menu.
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Kevin Wang 8 minutes ago
More Information on XLK Files
You can enable Excel backups on a per-document basis. When ...
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William Brown 1 minutes ago
Then check the box next to Always create backup to force Excel to keep a backup of that specific doc...
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Aria Nguyen Member
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More Information on XLK Files
You can enable Excel backups on a per-document basis. When you go to save your file, but before you actually save it, go to Tools > General Options.
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Zoe Mueller 22 minutes ago
Then check the box next to Always create backup to force Excel to keep a backup of that specific doc...
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Evelyn Zhang Member
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Then check the box next to Always create backup to force Excel to keep a backup of that specific document. XLK files are really a version behind the current one that you've saved.
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Audrey Mueller 10 minutes ago
If you save the file once and enable the backup, the XLS and XLK file will be saved together. But if...
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Harper Kim 19 minutes ago
The way this works means that if you make a bunch of changes to your XLS file, save it, and then wan...
If you save the file once and enable the backup, the XLS and XLK file will be saved together. But if you save it again, just the XLS file will reflect those changes. Save it once more and the XLK file will have the changes from the first and second save, but only the XLS file will have the most recently saved edits.
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Charlotte Lee 5 minutes ago
The way this works means that if you make a bunch of changes to your XLS file, save it, and then wan...
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Chloe Santos 23 minutes ago
For the most part, XLK files pop in and out of existence automatically and help to make sure you don...
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Andrew Wilson Member
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The way this works means that if you make a bunch of changes to your XLS file, save it, and then want to revert to the previous save, you can just open the XLK file. Don't let that all confuse you.
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Alexander Wang 20 minutes ago
For the most part, XLK files pop in and out of existence automatically and help to make sure you don...
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Lucas Martinez Moderator
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For the most part, XLK files pop in and out of existence automatically and help to make sure you don't lose your data if something unfortunate happens to the open file.
Still Can' t Open the File
If the file isn't behaving well with Excel, you might have a file in a totally different, unrelated format. This can happen if you've misread the file extension as XLK when really it's something just spelled similarly.
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Charlotte Lee 4 minutes ago
For example, an XLX file has nothing at all to do with Excel. If you try opening one in Excel, you'l...
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Harper Kim 56 minutes ago
On the other hand, a number of other file types are used in Excel, and they, too, look very similar:...
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Zoe Mueller Member
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For example, an XLX file has nothing at all to do with Excel. If you try opening one in Excel, you'll get an error.
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Evelyn Zhang 4 minutes ago
On the other hand, a number of other file types are used in Excel, and they, too, look very similar:...
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Chloe Santos Moderator
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Saturday, 03 May 2025
On the other hand, a number of other file types are used in Excel, and they, too, look very similar: XLB, XLL, and XLM are a few. They work with Excel just fine, so confusing one of those for an XLK file isn't actually an issue. Was this page helpful?
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