CSVXLSX

CSV to XLSX Converter

Convert a CSV file to an Excel .xlsx spreadsheet.

Drop a CSV file here or click to browse

Converts to XLSX entirely in your browser — files never leave your device.

How to convert CSV to XLSX

Drop your CSV file into the box above, or click to browse.
Click Convert. Nothing is uploaded to a server — it all happens in your browser.
Click Download to save your XLSX file.