Excel to CSV Converter
Convert XLSX or XLS worksheets into clean CSV files directly in your browser.
Drop an Excel workbook here
Supports .xlsx and .xls files up to 50 MB.
Sheet to CSV
Export one worksheet at a time for predictable CSV output.
Local only
SheetJS parses the workbook in your current browser session.
Ready for tools
Open the exported CSV in ChatDB's editor, JSON converter, or SQL tool.
Quick start
- 1
Upload an Excel workbook
Drop a .xlsx or .xls file into the converter.
- 2
Choose the worksheet
Pick the sheet you want to export as a CSV file.
- 3
Convert to CSV
Generate a comma-separated CSV locally in your browser.
- 4
Download the CSV
Save the converted worksheet without uploading your workbook.
Data stays on your device
Workbook parsing and CSV export happen locally in your browser.
Use the Excel to CSV converter when you need a quick worksheet export for databases, notebooks, scripts, or downstream ChatDB tools. Choose one sheet, generate a standard comma-separated file, and keep the full workflow on your device.
0 bytes
Data uploaded
XLSX, XLS
Formats
CSV
Output
Worksheet picker
Select the exact sheet you want before generating the CSV.
Private conversion
Your Excel workbook is parsed locally and never sent to ChatDB.
Fast CSV export
Download a standard CSV that is ready for spreadsheets, scripts, and databases.
Can I convert XLSX and XLS files to CSV?
Yes. This converter supports .xlsx and .xls workbooks and exports one worksheet at a time to CSV.
Does ChatDB upload my Excel file?
No. The workbook is parsed with SheetJS in your browser, and the CSV is generated locally on your device.
Can I convert every sheet at once?
This first version exports one selected sheet at a time so the output is predictable and easy to inspect.
What is the upload limit?
Excel uploads are limited to 50 MB to keep browser-side parsing responsive.