XLS .xls
The older binary Excel workbook format. Previews show stored cell values.
XLS file format guideXLS converter
Convert XLS files for free. Choose from 57 output formats, inspect file details and download your results. No account needed.
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Drag files here or choose them from your device.
Choose an output format
Open a conversion below or choose the output above. Add up to 100 files and download results separately or in a ZIP.
How to convert XLS files
- Select XLS files from your device or drag them into the converter.
- Choose your output format. Open conversion settings if you want to make adjustments.
- Convert, compare the original and result, then download your files.
Quality, compatibility and file limits
The browser Office engine needs a current desktop Chrome or Edge browser, an approximately 79 MB download, and at least 1 GB of free memory. The workspace shows when a hosted fallback is needed. Fonts and unsupported document features can affect the result. Macros and external-link updates are disabled.
Processing uses your device when possible and our servers when required. Browser files are limited to 256 MB each; server conversions to 64 MB; browser spreadsheets to 32 MB. Previews show supported content and do not guarantee identical rendering in every application.