XLSX to XLS
Produce an Excel 97-2003 file from a modern workbook, for legacy systems and older software that still refuse to accept XLSX uploads.
Click or drag files here
Supports .xlsx; encrypted throughout processing
About XLSX to XLS
Produce an Excel 97-2003 file from a modern workbook, for legacy systems and older software that still refuse to accept XLSX uploads.
Best for
Upload to a system that only accepts .xls
Share with someone running very old Office
Meet a fixed format requirement in a workflow
Frequently asked questions
Are there limits to be aware of?
The XLS format caps at 65,536 rows and 256 columns; larger sheets will be truncated.
Do formulas survive?
Standard formulas convert; features unique to XLSX may be simplified.
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