Convert XLS files to XLSX
Free online converter for converting files from XLS to XLSX.
How to convert XLS files to XLSX?
1
Upload your XLS file
Click the 'Choose File' button or drag and drop your XLS file into the upload area. Supported formats include JPG, BMP, PDF, and more.
2
Select XLSX as the output format
Make sure XLSX is selected as the output format. This ensures that your XLS file will be converted to XLSX.
3
Start the conversion process
Click the 'Convert' button and wait a few seconds while your XLS file is transformed into XLSX. All files are processed on our servers to free up your device's resources.
4
Download the result
Once the process is complete, click the 'Download' button to get your file in XLSX format.
Why choose our XLS to XLSX converter?
We ensure quality, convenience, and support for all formats.
High-quality from XLS to XLSX conversion
We guarantee precise from XLS to XLSX file conversion without any loss of quality.
Support for multiple formats
You can convert your from XLS to XLSX files from over 200 different formats, including images, documents, and more.
Compatible with all devices
Convert from XLS to XLSX files from any device – whether it's a computer, tablet, or smartphone.
User-friendly interface
Our service is designed to make from XLS to XLSX conversion easy for everyone in just a few simple steps.
Full data security
All files are transmitted and stored using advanced encryption technologies. Uploaded files are automatically deleted after 24 hours.
High-speed processing
Thanks to cloud technology, we ensure fast processing even for large from XLS to XLSX files.
Convert XLS to other formats
XLS in PDFXLS in PDFAXLS in DOCXXLS in DOCXLS in HTMLXLS in RTFXLS in TXTXLS in ODTXLS in EPUBXLS in MOBIXLS in AZWXLS in AZW3XLS in FB2XLS in DJVUXLS in LITXLS in PDBXLS in PPTXXLS in PPTXLS in ODPXLS in XLSXXLS in ODSXLS in CSVXLS in PNGXLS in JPGXLS in AAIXLS in ARTXLS in ARWXLS in AVSXLS in BGRXLS in BGRAXLS in BMPXLS in BMP2XLS in BMP3XLS in CMYKXLS in CR2XLS in CR3XLS in DDSXLS in DNGXLS in DPXXLS in EXRXLS in FITSXLS in GIFXLS in ICOXLS in JPEGXLS in MIFFXLS in NEFXLS in ORFXLS in PCXXLS in PPMXLS in PSDXLS in RAWXLS in TIFFXLS in WEBPXLS in XBMXLS in XCFXLS in YUVXLS in TGAXLS in TIFF64XLS in SUNXLS in FAX
Convert to XLSX: supported formats
Upload files and convert them to the desired format in seconds. Maximum quality, convenience, and security.
Copyright © 2025 All rights reserved.