XLS SDW
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Convert XLS to SDW

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XLS to SDW converterFREE
Drop a .XLS file here
or pick one - we convert it to .SDW and give you the file to download

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Tested on macOS, Windows & Linux
Last verified Oct 2026

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How to convert XLS to SDW

  1. Add your .XLS file - drop it in the box above or click to browse.
  2. Convert it to .SDW in a few seconds.
  3. Download your new .SDW file.

What to expect

  • The spreadsheet is recast as a word-processing document; formulas become static values.
  • SDW is an obsolete legacy format and is best converted onward to a modern document format afterward.
  • Detailed spreadsheet formatting and multiple sheets may not map cleanly into a single document.

Frequently asked questions

What is an SDW file that my spreadsheet becomes?
SDW is the legacy StarWriter word-processing document format from the 1990s StarOffice suite, so the conversion turns the spreadsheet into a word-processing document rather than a spreadsheet.
How does spreadsheet data look after converting to SDW?
The cell grid is carried into a document as text and tables, so it reads as a written document layout instead of a recalculating spreadsheet.
Do formulas keep working in SDW?
No. A word-processing document has no spreadsheet engine, so formulas are reduced to their computed values.
How should I handle this obsolete SDW output?
SDW is a legacy format, so it is best re-saved into a current document format like ODT or DOCX for long-term use and compatibility.
Learn about the formats: .XLS · .SDW
Programs that convert XLS: NeoOffice