CSV to XLSX
Create an Excel-compatible file for Microsoft Excel or Google Sheets.
Private spreadsheet conversion
Convert Excel to CSV in your browser
Select the worksheet you need, inspect its data, and export a configurable CSV without sending the workbook to a server.
Upload a spreadsheet
Drag and drop a CSV, XLSX, or XLS file. All processing happens locally in your browser with SheetJS.
No upload. No account. Your file stays on this device.
XLSX to CSV
Export spreadsheet data as CSV for use in other systems.
Clean and rename
Remove empty rows and rename columns before export.
Batch conversionConvert several CSV or spreadsheet files locally. A failed file does not stop the rest of the queue.
Batch conversion
Convert several CSV or spreadsheet files locally. A failed file does not stop the rest of the queue.
Up to 20 files and 250 MB total per queue. Two files are processed at a time to limit memory use.
Drop CSV, XLSX, or XLS files here
No files are queued. Source files are never included in ZIP downloads.
Control how Excel data becomes CSV
Choose the correct worksheet and configure delimiter, UTF-8 BOM, quote policy, headers, and line endings for the application that will consume your CSV.
How to use this tool
- 1Choose an XLSX or XLS workbook.
- 2Select a worksheet and review the preview.
- 3Configure CSV output and download it.
Frequently asked questions
Can I choose an Excel worksheet?
Yes. Delimora lists readable worksheets and lets you select one before export.
Does it support old XLS files?
Yes, unencrypted XLS and XLSX workbooks are supported.
Are formulas or macros executed?
No. Delimora does not execute workbook formulas, external links, or macros.