Use our free csv to excel converter to turn your spreadsheet into an Excel workbook (.xlsx) right in your browser. No signup, no software to install, no watermark — upload your file, pick the worksheet, and download the result in seconds. Your file never leaves your device because the whole conversion happens locally on this page.
🔒 100% free & private — your file is converted in your browser and never uploaded to any server.
How to convert CSV to Excel workbook (.xlsx)
- Upload your CSV file — Drag your file into the box above or click to browse. We accept .csv files.
- Choose the worksheet — If your file has several worksheets, pick the one to convert. A preview of your data appears instantly.
- Convert and download — Click "Convert to XLSX" — your Excel workbook (.xlsx) downloads immediately, ready to use.
Why convert CSV to Excel?
CSV is great for machines but painful for humans — Excel gives you formatting, formulas and filters back.
- Turn flat CSV data into a real workbook you can format, filter and chart.
- Add formulas and multiple sheets on top of imported CSV data.
- Share data with Excel users in the format they expect.
Which formats can you convert from?
CSV to XLSX
Upload any .csv file and receive a genuine Excel .xlsx workbook with your data laid out in the grid.
Will my spreadsheet layout stay intact?
Every CSV row and field lands in the matching Excel cell, so your data grid is reproduced exactly. From there it is a normal workbook you can format however you like.
Is it safe to convert CSV files online?
Yes. Unlike many online converters, this tool does not upload your file anywhere — the conversion runs entirely in your browser, so sensitive business data stays on your own device. (Microsoft Excel: Microsoft Excel.)
Tips for a perfect csv to excel conversion
- Upload a .csv file — the converter builds a genuine .xlsx workbook from it.
- The CSV’s rows and columns map directly to the worksheet grid.
- Once in Excel you can apply formatting, formulas and pivot tables freely.
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Frequently asked questions
Is this CSV to Excel converter really free?
Yes. The converter is 100% free with no signup, no watermarks, and no limit on the number of files you convert.
Are my files uploaded to a server?
Your file is converted entirely in your browser with JavaScript. Nothing is uploaded to any server, so your data never leaves your device.
Which formats can I convert from?
This converter accepts .csv files and returns a real .xlsx spreadsheet you can open and keep editing.
Will my data stay intact?
Yes. All rows, columns and cell values are carried over into the new spreadsheet. Formatting from styled workbooks is preserved where the target format supports it.
Does it work on mobile?
Yes. The converter runs in any modern browser on desktop, tablet and mobile — no app or software installation needed.