In-Browser Conversion Bridge
Convert XLS to CSV
Fast, client-side conversion from .xls to .csv. No server uploads, no privacy compromises.
Zero server uploads
Pure client-side execution
exact Fidelity
Drop files here, or click to browse
PDF, DOCX, XLSX, PPTX, JPG, PNG, MP3, MP4, EPUB, ZIP and 100+ more
Fidelity Note (exact):Values only; formulas, charts, macros, and formatting are not exported.
Format Comparison: XLS vs CSV
| Property | XLS | CSV |
|---|---|---|
| Category | spreadsheet | spreadsheet |
| File Extension | .xls | .csv |
| MIME Type | application/vnd.ms-excel | text/csv |
| Common Apps | Microsoft Excel, LibreOffice Calc | Excel, Google Sheets |
| Best For | Reading legacy corporate financial archives and historical reports. | Database ingestion, data analysis in Python/R, and universal data interchange. |
How to Convert XLS to CSV
1
Select Files
Drop or browse your XLS files into the widget.
2
Verify Settings
Target format CSV is locked. Customize options if desired.
3
Instant Download
Conversion completes locally in browser memory for instant download.
Frequently Asked Questions
Fileora converts XLS (XLS) directly inside your web browser using WebAssembly. Drop your XLS file into the converter box above, confirm CSV as the output, and click Convert. Your file data stays in local memory on your device.