Excel to CSV
without uploading it.
Convert the first sheet of an Excel file to plain CSV — entirely in your browser.
Drop an Excel file, or click to browse
Drop your .xlsx or .xls file.
The first sheet converts automatically.
Copy the CSV or download it as a file.
Why there's no upload step
Spreadsheet software isn't always available or wanted just to grab plain data out of an Excel file. This reads the workbook locally and converts the first sheet to CSV, without your spreadsheet ever reaching a server.
Is my spreadsheet uploaded anywhere?+
No. Reading and conversion happen entirely in your browser — nothing is sent to a server.
What if my file has multiple sheets?+
Only the first sheet is converted. Reorder sheets in Excel first, or split the file, if you need a different one.
Are formulas converted to their values?+
Yes — the CSV contains each cell's calculated value, not the underlying formula.
Can I go the other direction?+
Yes — use the CSV to Excel page.