About the Excel to CSV Online Free Tool

The Excel to CSV Online Free Tool exports a worksheet as comma-separated values, the format almost every database, analytics tool, and import script accepts.

Conversion runs on the IO Tools server using LibreOffice, the same engine behind most open-source document pipelines. Uploaded files are converted and deleted immediately; they are never stored or shared.

Formulas are exported as their calculated results, which is what a CSV import expects. Cell formatting, colours, and merged cells have no equivalent in CSV and are dropped by the format itself, not by this tool.

This tool has no in-browser mode. A browser has no office engine of its own, so if the server is unavailable the tool says so plainly rather than producing a poor imitation.

How to Use Excel to CSV Online

1. Choose an .xlsx, .xlsm, .xls, or .ods file.
2. Convert it to CSV.
3. Download the CSV file.

One Sheet per CSV

A CSV file holds a single table:
- Only the first worksheet is exported, because the format has no way to represent more than one.
- To export a different sheet, move it to the front of the workbook first, or delete the sheets before it.
- Values are written as they are displayed, so set your number and date formats before converting.

Common Use Cases

• Importing spreadsheet data into a database, CRM, or analytics tool.
• Feeding a script or data pipeline that expects plain CSV.
• Stripping formatting down to raw values for a clean handover.

Quick FAQ

Will my original file be changed?
No. The CSV is generated as a separate file.

Are files uploaded?
Yes. Reading a real workbook and evaluating its formulas needs a spreadsheet engine a browser does not have, so the file is sent to the IO Tools server, converted with LibreOffice, returned, and deleted immediately.

Why is only one sheet in the file?
CSV is a single-table format with no concept of worksheets. Export each sheet separately if you need them all.

What happens to my formulas?
They are exported as their calculated results. This is what nearly every CSV import expects.