CSV to Excel Converter
Convert CSV files to Excel (.xlsx) format instantly in your browser. Upload a file or paste CSV data, preview the table, and download the spreadsheet.
About CSV to Excel Converter
This CSV to Excel converter turns comma-separated data into a proper Excel spreadsheet (.xlsx) that you can open in Excel, Google Sheets, or any spreadsheet application. Upload a file or paste raw CSV text, preview the data, and download.
How to Use It
Choose between uploading a CSV file or pasting text directly. The tool parses the data and shows a table preview of the first 20 rows so you can verify everything looks right. Click the download button to get your Excel file.
Supported Formats
Upload any .csv, .tsv, or .txt file with delimited data. The parser handles quoted fields, commas within values, and various line ending formats. The output is always a standard .xlsx file compatible with all modern spreadsheet software.
Going the Other Way
Need to convert from Excel back to CSV? Use the Excel to CSV converter. For more advanced editing, the CSV Viewer lets you sort, filter, and edit your data before exporting.
All conversion happens client-side in your browser. Your data stays on your device.
Frequently Asked Questions
How does the CSV to Excel conversion work?
The tool uses the SheetJS library to parse your CSV data and write it as an Excel workbook. The conversion happens entirely in your browser - no data is sent to any server.
Does it handle quoted fields and commas within values?
Yes. The parser correctly handles fields wrapped in double quotes, including values that contain commas or line breaks inside quotes.
Can I paste CSV data directly instead of uploading a file?
Yes. Switch to the "Paste CSV" tab and paste your data into the text area. The tool will show a preview and let you download it as an Excel file.
What file types can I upload?
The tool accepts .csv, .tsv, and .txt files. Any plain text file with comma or tab-separated values should work.
Are my files uploaded anywhere?
No. All processing happens in your browser. Your data never leaves your device.