Is converting XLSX to ODS free?

Yes. ConvertBoy is free with no daily limit, no watermark and no sign-up.

Is there a file size limit?

No. Your own device does the work, so the only limit is your device's memory. Very large videos take longer on slower computers.

No. The conversion happens inside your browser. Your XLSX files never leave your device, and nothing is kept after you close the tab.

Yes. It works in Safari on iPhone and Chrome on Android, as well as on any computer.

Convert XLSX files to ODS for free. No size limit, no sign-up, nothing uploaded.

Choose your XLSX files or drop them on this page. You can add as many as you like.
ODS is already selected. Press Convert, or Convert all for several files.
Press Download. With several files you can download them all as one ZIP.

XLSX is the Excel spreadsheet format. ODS is the LibreOffice and OpenOffice spreadsheet format.

Is converting XLSX to ODS free?: Yes. ConvertBoy is free with no daily limit, no watermark and no sign-up.
Is there a file size limit?: No. Your own device does the work, so the only limit is your device's memory. Very large videos take longer on slower computers.
Are my files uploaded anywhere?: No. The conversion happens inside your browser. Your XLSX files never leave your device, and nothing is kept after you close the tab.
Does it work on a phone?: Yes. It works in Safari on iPhone and Chrome on Android, as well as on any computer.