CSV to Excel Converter

Convert one CSV file into a single-sheet XLSX workbook, with guidance for delimiters, encoding, dates, and leading zeros.

How to use this tool

1. Select the supported file or files.
2. Review the available options.
3. Run the tool and download the result.
4. Open the output and verify important data.

What this tool does

Turn a CSV text file into a simple single-sheet XLSX workbook.

Important output limits

Delimiter and text interpretation depend on the browser parser; custom formatting and formulas are not inferred.

Frequently asked questions

Are files uploaded to an application server?

Spreadsheet contents are processed in the current browser tab.

What should I check after download?

Delimiter and text interpretation depend on the browser parser; custom formatting and formulas are not inferred.

Can I use this on a phone?

The interface works in modern mobile browsers, but large files may exceed device memory.

Should I keep the original file?

Yes. Keep a backup and verify generated output before relying on it.