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How to convert XLSX file to XLS to open on Excel 2003

When you receive an XLSX file but cannot open it in Excel 2003, you need to convert the format to XLS to use it. Compared to newer versions, Excel 2003 has limited features, but you can still open the file by changing the file extension.

Can't open XLSX files in Excel 2003? Try this simple conversion to fix the problem without installing new software.

Why convert XLSX files to XLS?

- Excel 2003 does not support XLSX format.
- Conversion helps open files on older versions without updating the software.
- Keep the content intact, no data loss during conversion.


How to convert XLSX file to XLS

Step 1: Go HERE .

Click Browse to select the XLSX file to convert.

Picture 1 of How to convert XLSX file to XLS to open on Excel 2003

Step 2: Select the XLSX file on your computer, click Open.

Picture 2 of How to convert XLSX file to XLS to open on Excel 2003

Step 3: Select .XLS in the Output Format section.

Picture 3 of How to convert XLSX file to XLS to open on Excel 2003

Step 4: Finally, click Convert to convert XLSX file to XLS.

Picture 4 of How to convert XLSX file to XLS to open on Excel 2003

Step 5: After successful conversion, select Click hero to go to the download page.

Picture 5 of How to convert XLSX file to XLS to open on Excel 2003

Step 6: The link to download the converted XLS file will appear, click on the link to download .

Picture 6 of How to convert XLSX file to XLS to open on Excel 2003

You can open it directly in Excel 2003 or check the file extension by right-clicking on the XLS file and selecting Properties.

Picture 7 of How to convert XLSX file to XLS to open on Excel 2003

In addition to being familiar with file formats, Excel users also need to master basic functions to process data quickly and accurately. Knowing how to use functions such as SUM, AVERAGE or VLOOKUP will help you optimize your work on spreadsheets.

Update 18 February 2025

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