XLSX .xlsx
An Office Open XML workbook. Table previews show stored values, without recalculating formulas.
XLSX file format guideXLSX converter
Convert XLSX files for free. Choose from 58 output formats, inspect file details and download your results. No account needed.
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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 XLSX files
- Select XLSX 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.