What Excel format is generated?

CSV to Excel

Convert CSV to an Excel XLSX workbook.

Drop CSV file here

Convert CSV files to Excel XLSX format. Up to 20 MB.

Upload CSV and download an XLSX workbook with the parsed table. Processing stays in your browser.

Values may be inferred as numbers or dates, so leading zeros can change. Unusual delimiters or broken quoting may need cleanup first. Max 10 MB.

Export a selected Excel sheet to CSV.

Combine multiple CSV files into one.

Remove duplicate CSV rows by full row or one column.

The tool creates modern XLSX workbooks.