How to convert SLK to XLS
- Add your .SLK file - drop it in the box above or click to browse.
- Convert it to .XLS in a few seconds.
- Download your new .XLS file.
What to expect
- SYLK stores cells, formulas, and basic number formats only - charts, images, macros, and pivot tables do not exist in the format and will not appear in the output
.xls. - The
.xlsformat caps each sheet at 65,536 rows; if your SYLK file is a large data export, check the row count before converting to avoid silent truncation. - Standard formulas (SUM, IF, VLOOKUP, arithmetic) carry over correctly; very old Multiplan-specific syntax may need manual correction after conversion.
Frequently asked questions
Can I convert SLK to XLS without Microsoft Excel?
Yes. LibreOffice Calc (free and open-source) reads SYLK natively and can save as
.xls. The output is fully compatible with Excel.Will my formulas survive the SLK-to-XLS conversion?
Standard formulas transfer cleanly. SYLK encodes formulas as text, and Excel or LibreOffice re-parses them on import; edge cases with very old Multiplan-only functions may need manual review.
Should I save as XLS or XLSX?
Use
.xls only if the target system explicitly requires the Excel 97-2003 format. XLSX is the current standard, supports up to 1,048,576 rows, and is accepted everywhere .xls is.Why does Excel warn me when saving the converted file as XLS?
Excel checks for features not supported by the older format. For a plain SYLK import with no advanced features, this warning is routine - click Keep Current Format to proceed.
Programs that convert SLK: Microsoft Excel · Corel Quattro Pro · PlanMaker · Microsoft Works · NeoOffice · LibreOffice Calc · OpenOffice.org Calc · PrimoOnline
