How to open a .XLK file online
Three steps, a few seconds, no Excel.
Choose your .XLK file
Drag your .XLK file onto the box above, or click Choose file.
Supported
Your .XLK file is opened: every sheet, formula and merged range.
Browse, search, export
Switch sheets, click a cell to see its formula, search the whole sheet and export it as CSV or JSON.
What is a .XLK file?
Everything worth knowing about Microsoft Excel Backup File files.
An .XLK file is a backup file created by Microsoft Excel to preserve data. It contains a duplicate of a spreadsheet and is used to restore information if the original file is lost or corrupted. These data files are typically opened using Microsoft Office or Microsoft Excel.
Programs that open .XLK files
| Full name | Microsoft Excel Backup File |
|---|---|
| Developer | Microsoft |
| First released | Excel 97 era (~1997); 'Always create backup' option in Save settings |
| Category | Documents |
| MIME type | application/octet-stream |
Related viewers
Other free viewers for related formats.
Is my .XLK file uploaded anywhere?
No. Your .XLK file is opened for you.
Are formulas recalculated?
The viewer shows the values Excel or LibreOffice saved in the file, plus the formula behind each cell when you click it. It doesn't recalculate, so what you see is exactly what the author saw when saving.
Can I open a password-protected .XLK file?
Not yet. Files encrypted with a password to open are detected and reported; sheets that are only "protected against editing" open normally.
Why doesn't my chart or image show?
This viewer focuses on cell data: values, formulas, merged cells and fill colours. Charts, images and pivot table layouts are not drawn yet.
How big a file can I open?
Up to 50 MB. Large sheets are shown 500 rows at a time so your browser stays fast. Search still covers every row.
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