Excel to CSV, Online

Convert Excel files to CSV right in the browser — no Microsoft account, no desktop install, and no upload to a third party. The .xlsx is decoded locally in WASM.

Quick path from an Excel workbook to analyst-friendly CSV.

1. Open the tool online

Runs in any modern browser. No Microsoft account, no Office install.

2. Upload your workbook + pick a sheet

Every sheet from the .xlsx appears in the dropdown. Switching sheets re-emits the CSV live.

3. Download UTF-8 CSV

Output is ready for Python, Pandas, BigQuery, and Postgres — no encoding conversion needed.

Does the online Excel to CSV tool work on password-protected workbooks?

No. Password-protected workbooks need to be decrypted in Excel first. Plotiq only reads unprotected OOXML files.

Can I use this on Chromebooks?

Yes. The tool runs entirely in the browser and works on any device with Chrome, Edge, Firefox, or Safari.

How big can the Excel file be in the online tool?

Up to 10 MB per file. For larger workbooks, split sheets first or filter columns before upload.

Does the online tool handle non-English Excel files?

Yes. UTF-8 output preserves Japanese, Arabic, Cyrillic, emoji, and accented Latin characters that Excel's native CSV export usually garbles.