Convert CSV to Excel
Drop your CSV below. Get a proper Excel spreadsheet instantly — nothing leaves your browser.
Drop your files here
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Why convert CSV to Excel?
CSV files are plain text — no formatting, no formulas, no charts. Converting to Excel gives you a proper spreadsheet where you can sort, filter, add formulas, format cells, and create charts. Most business workflows expect Excel files, not raw CSV. This conversion is especially common when exporting data from databases, CRM tools, or analytics platforms that output CSV.
How the conversion works
OnlyFiles uses SheetJS to parse your CSV and generate an Excel file entirely in your browser. Your data is never uploaded to any server. The conversion handles common CSV quirks like quoted fields, different delimiters, and Unicode characters. The output is a standard .xlsx file compatible with Microsoft Excel, Google Sheets, and LibreOffice Calc.
When to use this
- Turn a data export from your CRM or database into a formatted spreadsheet
- Open a CSV report in Excel with proper column formatting
- Share data with colleagues who expect Excel files, not raw CSV
Frequently asked questions
How do I convert CSV to Excel for free?
Go to onlyfiles.org/convert/csv-to-excel, drop your CSV file, and click convert. Your Excel file downloads instantly. The conversion happens in your browser — nothing is uploaded.
Will my data formatting be preserved?
CSV is plain text with no formatting. The conversion creates a clean Excel spreadsheet with your data in columns. You can then add formatting, formulas, and charts in Excel.
Does this work with large CSV files?
Yes, the conversion runs in your browser so it can handle files as large as your browser memory allows. For most CSV files this is not an issue.