Turn XLS (Excel 97-2003) files into XLSX (Excel Workbook) — in your browser, no install, no quality loss.
Convert nowXLS goes straight to XLSX, with no intermediate format to degrade it along the way.
The work is done by libreoffice.
Xls maps to xlsx in a single step. Handled by libreoffice.
For members, files live only in your own company drive and no other company can see them. As a guest, everything is deleted after 24 hours. Retention varies by plan and you can delete anything yourself at any time.
Yes. Drop in as many as you like — we show only the targets every file can reach, then convert them together.
No, it runs in your browser. A Windows build exists but is optional; it adds watched folders and an Explorer right-click menu.
You can try it without signing up, and free members get a set number of conversions each month. Larger files or higher volume need a paid plan.
No. Files are processed on our servers, so you need an internet connection. The desktop app uses the same servers.
Drop the file into OmniDesk, set options if you need to, and press start. Download the result when it finishes — usually within seconds to a few minutes.
Yes. It opens straight from omnidesk.win and runs in Chrome, Edge, Safari or Firefox — nothing to install.