Convert CSV to XLSX Instantly
Convert CSV files to Excel format
Drag & drop your file here
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Supported: .CSV • Max 10MB
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Files deleted in 1 hour
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Maintain formatting, fonts, and layouts in every conversion.
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How to Convert CSV to XLSX Online
Convert comma-separated value (CSV) files to Microsoft Excel XLSX format. Data is properly formatted into columns for easy editing.
Upload File
Drag and drop your CSV file or click to browse.
Click Convert
Click the "Convert to XLSX" button to start.
Download
Save your new XLSX file instantly.
Features of Our CSV to XLSX Tool
Keeps Cell Formatting
Column widths, number formats, and merged cells are preserved.
Multi-Sheet Support
Every sheet in your workbook is included in the output.
Chart-Safe
Embedded charts and graphs render exactly as designed.
No Registration
Convert unlimited spreadsheets with no account.
Auto-Deleted
Uploaded files are removed from our servers within 1 hour.
Technical Details
Our CSV to XLSX converter uses LibreOffice Headless as the conversion engine, ensuring high-fidelity output that preserves your document's formatting, fonts, images, and layout. The conversion happens on our secure servers, so you don't need to install any software.
Frequently Asked Questions
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