CSV files open anywhere, but they cannot hold multiple sheets or spreadsheet features. This free csv to xlsx converter turns your CSV table into a proper Excel workbook you can open and work with. Your file never leaves your browser — nothing is uploaded, so your data stays private.
How to Use the CSV to XLSX Converter
Three quick steps — no signup, no cost, no software.
Drop your CSV file into the box above, or click it to pick a file from your device.
Click the Convert button and wait a moment while the table is written as an XLSX workbook in your browser.
Download your new XLSX file, ready to open in Excel, Google Sheets, or LibreOffice.
Why Choose Our CSV to XLSX Converter
Built to be fast, private, and free — on any device.
Convert as many CSV files as you like, with no account and no hidden limits.
Your file is processed on your own device and never sent to a server.
The result is a genuine XLSX workbook, not just a renamed CSV.
Any modern browser, on phone or computer, with no software to install.
CSV to XLSX Converter FAQs
Short, direct answers to the questions readers ask most.
Yes, completely free, with no account and no hidden limits.
No. The conversion carries over data rows and values only — it does not create formulas, charts, or formatting.
No. Each run handles one CSV file and produces one spreadsheet, so repeat the conversion for every file you have.
Yes. Open this page on your phone’s browser, pick a CSV file, and download the XLSX.
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Try the related tools above, or go back to the Convertion homepage for more free converters.
