How do I convert ODS to XLSX online for free?

Document Conversion

Convert ODS to XLSX Online

Free online OpenDocument Sheet to Excel (OOXML) converter. Files are processed locally in your browser — no uploads, 100% private.

.ODS

.XLSX

Drop your .ODS file here

or click to browse from your device

Accepts .ODS files

100% Private

Files never leave your device

Instant

In-browser processing

No Account

No sign-up required

How to Convert ODS to XLSX Online

1Upload your .ODS file using the drop zone above or click to browse
2Your file converts automatically to .XLSX format entirely within your browser
3Download your converted file — no account or email needed

Frequently Asked Questions

Upload your OpenDocument Sheet file using the drop zone above. Your file is instantly converted to Excel (OOXML) format right inside your browser using client-side processing — no account, no software, and no cost. When conversion is complete, click Download to save your XLSX file.

Completely. Our converter runs 100% in your browser using local processing, so your ODS file never leaves your device or touches any external server. We do not store, access, or transmit your files at any point.

Desktop: up to 500 MB. Mobile: up to 200 MB. All processing happens locally in your browser — your files are never uploaded to any server.