Prepare csv to xlsx output without manually rebuilding rows.
CSV & Excel
CSV to XLSX
Transform spreadsheet data locally while preserving headers, quoted values, Unicode text, empty cells, and text identifiers.
Browser tool
Upload and process your file
Your file is processed in your browser and is not uploaded to our server.
Drag a file here
or choose a file from your device
.csv, .tsv, .xlsx, .xls, .json, .xml, text/csv, application/json · up to 50 MBHow it works
From source file to reviewed output
- 01
Choose the source file or files you want to process.
- 02
Configure the available options and run csv to xlsx.
- 03
Check the preview and warnings, then download the generated spreadsheet.
When this tool is useful
Review detected columns, warnings, and representative results before downloading.
Keep a repeatable workflow for supplier, catalog, or operational data updates.
Questions about csv to xlsx
Does CSV to XLSX change my original file?
No. The original stays untouched; the tool creates a separate result for you to download.
Are my files uploaded to WeCommit?
This tool processes selected files in your browser. Your file contents are not sent to the WeCommit server.
Can I review the result before downloading?
Yes. Tabular tools show a row preview and processing summary. File tools show generated-file details and any limitations.