Paste in CSV or a URL, drop a file, , or load an to begin.
Your results will appear here
Paste your data or a URL above, or start with one of these:
Tip: press Ctrl + Enter in the editor to process.
- Both directionsCSV to XLSX or XLS, and Excel sheets back to CSV.
- 100% localYour data never leaves the browser. No uploads, no tracking.
- Safe valuesLeading zeros and long numbers never get mangled.
- Every sheetA workbook with several sheets gives one CSV per sheet.
How values are converted
- Numbers
9.5→9.5 (number cell)- Leading zeros
007→"007" (text cell)- Long numbers
123456789012345678901→"123456789012345678901" (text cell)- Booleans
true→TRUE (boolean cell)- Delimiters
a;b→2 columns (auto-detected)- Excel to CSV
Sheet1, Sheet2→one CSV per sheet