Convert XLS to CSV
Free and instant — your XLS files are processed securely on our servers and deleted right after conversion. Nothing is stored.
How to convert XLS to CSV
- Step 01
Add your XLS files
Drop them into the box above or click to browse. You can add several files at once.
- Step 02
Conversion starts instantly
Your file is sent to our servers, converted and deleted right away — no sign-up, no queue, no waiting.
- Step 03
Download your CSV files
Save each file individually or grab them all at once. Done.
Why convert XLS to CSV?
Converting XLS to CSV strips an old Excel spreadsheet down to raw comma-separated data — the format every database, script and import tool expects.
XLS vs CSV at a glance
XLS is the legacy Excel format — a binary file superseded by XLSX in 2007, still floating around in old templates and archives. CSV is the universal data format — plain text rows and commas that every spreadsheet app, database and script can read.
| Property | XLS | CSV |
|---|---|---|
| Extension | .xls | .csv |
| Full name | Microsoft Excel 97-2003 Spreadsheet | Comma-Separated Values |
| First released | 1987 | 1972 |
| Developed by | Microsoft | IBM (early usage); standardized informally over decades |
| Compression | Lossless | Lossless |
| Transparency | No | No |
| Animation | No | No |
| Best for | old Excel spreadsheets from Office 97-2003 that newer apps struggle to open | raw tabular data — imports, exports and data pipelines |
XLS to CSV — frequently asked questions
Is this XLS to CSV converter really free?
Yes — completely free, with no sign-up, no watermarks and no daily limits.
Which sheet gets converted?
Only the first (active) sheet. If you need other sheets as CSV, select each one as active before converting.
Is the conversion private?
Your XLS is sent to our servers, converted using LibreOffice, and the result is returned to you. Your file is deleted immediately after conversion and never stored.
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