Drop your files here
6 file types, including XLS, XLSX, XLSM, ODS, CSV, TSV · up to 95MB each
Supported spreadsheet formats
Available right now
- XLS to XLSX
- XLS to XLSM
- XLS to ODS
- XLS to CSV
- XLS to TSV
- XLS to HTML
- XLS to PDF
- XLSX to XLS
- XLSX to XLSM
- XLSX to ODS
- XLSX to CSV
- XLSX to TSV
- XLSX to HTML
- XLSX to PDF
- XLSM to XLS
- XLSM to XLSX
- XLSM to ODS
- XLSM to CSV
- XLSM to TSV
- XLSM to HTML
- XLSM to PDF
- ODS to XLS
- ODS to XLSX
- ODS to XLSM
- ODS to CSV
- ODS to TSV
- ODS to HTML
- ODS to PDF
- CSV to XLS
- CSV to XLSX
- CSV to XLSM
- CSV to ODS
- CSV to TSV
- CSV to HTML
- CSV to PDF
- TSV to XLS
- TSV to XLSX
- TSV to XLSM
- TSV to ODS
- TSV to CSV
- TSV to HTML
- TSV to PDF
Frequently asked questions
Is it really free?
Yes. There is no sign-up and no watermark. To keep the service available for everyone there is a 95MB limit per file and a cap on how many files one connection can process in a short period.
Are my files stored?
Your upload is used only to make the converted file. Images are processed in memory; other files are written to a private temporary folder that is deleted as soon as the conversion finishes. Nothing is kept after the result has been sent back.
Will quality drop?
For images, a little, by design: the image is re-encoded at the Quality you choose (default 75%). Audio and video are re-encoded with high-quality settings; documents keep their text and layout as far as the target format allows. Converting never restores detail that is already missing from the original.
How this works: your file is uploaded over HTTPS and converted on this server with open-source engines (libvips for images, FFmpeg for audio and video, LibreOffice and Pandoc for documents, Calibre for ebooks, Ghostscript and Inkscape for PDF and vector files). Images are processed in memory; other files use a private temporary folder that is deleted as soon as the conversion finishes.