Source .xls
XLS
The pre-2007 binary Excel workbook, capped at 65,536 rows.
- Compression
- Lossless
- Transparency
- Not supported
- Keeps
- Sheets, formulas and formatting
- Gives up
- Anything past that row limit
Spreadsheet converter
XLS to CSV Converter
Turn XLS files into CSV without installing anything. The target format on this page is already set to CSV, so a single file or a whole folder is one press of Convert away.
XLS CSV
Files travel over TLS and are deleted from the server as soon as the conversion finishes.
XLS and CSV: what actually changes
XLS is the pre-2007 binary Excel workbook, capped at 65,536 rows. CSV is comma-separated plain text — one table, no types, readable by everything.
Only cell values cross over: formulas are replaced by whatever they currently evaluate to, and formatting, charts and sheet structure are left behind. The CSV you get back keeps the header row and every value as text, and gives up formulas, formatting, multiple sheets and column types. That is exactly the trade you want when something downstream — an import, a pipeline, a script — needs plain records.
How it goes3 steps
-
Add your XLS files
Drop them onto the box above or click Select File. Add as many .xls files as you like — the whole batch converts in one go, and duplicates are ignored. -
Confirm CSV as the output
CSV is already selected as the target format on this page. Check the delimiter and encoding options if your data is unusual. -
Download your CSV
Hit Convert and grab the finished CSV files individually or as a single ZIP. Everything is deleted from the server once you have them.
Format facts
What each side of this conversion is good at, so you know what you are trading away.
Result .csv
CSV
Comma-separated plain text — one table, no types, readable by everything.
- Compression
- Lossy
- Transparency
- Not supported
- Keeps
- The header row and every value as text
- Gives up
- Formulas, formatting, multiple sheets and column types
Related converters
Other routes in and out of these formats.