CSV to Excel Converter

Upload a CSV file and download it as an Excel (.xlsx) spreadsheet. Preserves all your data, headers, and structure.

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Convert your CSV files to Excel spreadsheet format

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Supports .csv, .tsv, and .txt files up to 10MB

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Files are processed in memory and deleted immediately. We never store your data.

Why Convert CSV to Excel?

While CSV files are great for data exchange, Excel spreadsheets offer formatting, formulas, charts, and better visualization. Converting your CSV to Excel makes it easier to analyze data, create reports, and share with colleagues who prefer working in Microsoft Excel or Google Sheets.

How the Conversion Works

Our converter reads your CSV file, auto-detects the delimiter and encoding, then creates a properly formatted .xlsx file using the OpenSpout library. Headers are preserved, data types are maintained, and the resulting file opens perfectly in Excel, Google Sheets, LibreOffice Calc, and other spreadsheet applications.

Frequently Asked Questions

Will the Excel file preserve my column headers?

Yes. The first row of your CSV is treated as the header row and is preserved as-is in the Excel file. Each header becomes a column name in the resulting .xlsx spreadsheet.

What is the maximum file size for conversion?

Files up to 10MB are supported. For most business datasets this covers hundreds of thousands of rows. If your file exceeds 10MB, consider splitting it or removing unused columns before uploading.

Can I open the output file in Google Sheets?

Yes. The .xlsx file produced is fully compatible with Google Sheets, LibreOffice Calc, Apple Numbers, and all versions of Microsoft Excel. Simply upload or drag-and-drop it into any of those applications.

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