InfyTool
Free icons

Excel to CSV converter

Workbooks into clean CSVs — one per sheet, previewed before download, on your own device.

Excel (XLSX/XLS/ODS), CSV or JSON · converted on your device, nothing is uploaded

No size limit · files are processed on your device and never uploaded · how it works

Advanced settings (optional)
Output
Convert to

The universal tabular format — imports anywhere. Multi-sheet workbooks become one CSV per sheet.

Runs in your browser. Files are never uploaded — you can go offline after the page loads.

How to use the Excel to CSV

  1. Click “Choose Files” or drop your images into the box above. Whole folders work too.
  2. Adjust the Advanced settings if you need to, then click “Convert”.
  3. When the row shows Done, click “Download” — or “Download all” for a ZIP.

Easy to use

Drop files, pick options, download. Whole folders at once, no signup, no daily limit.

Best quality

The same engines the professionals use — SVGO, resvg, MozJPEG, libwebp, libavif — compiled to run in your browser.

Private & secure

Files are processed on your device and never uploaded. Close the tab and nothing remains anywhere.

Frequently asked questions

Why do imports want CSV instead of Excel?

CSV is plain text — every database, CRM and script reads it identically, with no formulas, formatting or macros to misinterpret. It is the interchange format; Excel is the editing format.

Other presets

Excel / CSV / JSON ConverterSpreadsheets, CSVs and JSON converted in any direction CSV to ExcelCSV exports into proper

Your files never leave your device

Most online converters upload your file to a server. InfyTool ships the actual encoders to your browser as WebAssembly instead, so processing happens inside your tab — faster for batches, and nothing to delete afterwards.

  • No upload, ever. Turn off Wi-Fi after the page loads and every tool keeps working.
  • No limits. No file-size cap, no queue, no watermark, no account.
  • Runs on your CPU. Batches use several cores in parallel; nothing is throttled.

More free tools

Need graphics to work with?

InfyTool is built by the same team as these free libraries.

InfyPNGFree transparent PNG graphics for mockups and social posts. InfySVGFree SVG designs and illustrations, ready to optimise or convert. InfyIconFree SVG and PNG icons you can open directly in these tools.