Convert your .xlsx files to .odt format online for free. No software to install. Fast, secure, and easy.
Free — 3 conversions per day
Drag and drop your .xlsx file or click to browse.
Select ODT as your output format.
Click Convert and download your .odt file.
Converting from XLSX (Office Open XML Spreadsheet) to ODT (Open Document Text) helps you work with your content in a different application or workflow. XLSX and ODT serve different purposes, and converting between them bridges the gap.
XLSX (Office Open XML Spreadsheet, introduced in 2007) uses ZIP (containing XML parts) compression. ODT (Open Document Text, introduced in 2005) uses ZIP (containing XML content, styles, meta, media) compression. XLSX browser support: None (requires office application or online viewer). ODT browser support: None (requires office application or online viewer).
The quality impact depends on the specific settings used during conversion. ODT uses compression that may affect quality depending on the chosen settings.
Typical XLSX file size: A 10,000-row spreadsheet with formulas: ~500 KB - 2 MB. Typical ODT file size: A 20-page document with images: ~300 KB - 3 MB.
For the best conversion results, always start from the highest quality source file available. Converting from a previously compressed file compounds any existing compression artifacts. When in doubt, use higher quality settings — you can always re-convert at lower quality later, but you cannot recover quality that has been lost.
Convert XLSX to ODT with 3 free conversions per day. No hidden fees.
Create a free account in 10 seconds and start converting immediately. No credit card required.
Files are encrypted during transfer, processed on secure servers, and deleted immediately after conversion.
Convert files from any device — desktop, tablet, or phone. No software to install, works in any modern browser.
SquishConvert supports over 358 file conversion combinations across images, documents, audio, and video.
Your converted .odt file maintains the best possible quality. No unnecessary compression or quality loss.
You get 3 free conversions per day. Upgrade to Pro for unlimited conversions.
Most files convert in under 10 seconds. Larger files may take a bit longer depending on size.
Yes. Files are encrypted during transfer, processed on secure servers, and deleted immediately after conversion. We never store your files.
Currently, SquishConvert converts one file at a time. Batch conversion is coming soon — stay tuned!
Free users can convert files up to 10 MB. Pro users can convert files up to 500 MB.