Convert CSV to Excel Spreadsheet Online

Easily transform your CSV data into a fully functional Excel workbook. Our tool handles commas, tabs, or custom delimiters, giving you a clean, editable spreadsheet.

Convert CSV to Excel Spreadsheet Online

Upload CSV files and convert them to Excel format (.xls) with proper formatting.

CSV Input

Upload

Delimiter:

Sheet Name:

Excel Output

Excel XML will appear here

How the CSV to Excel Converter Works

Upload your CSV file or paste the data directly. Select the delimiter that matches your file: comma, tab, or semicolon. The converter parses your data and structures it properly.

Enter a sheet name for your Excel file. The converter generates SpreadsheetML format - an XML-based Excel file that opens in any spreadsheet application.

Download the converted .xls file or copy the XML. The file opens directly in Excel, Google Sheets, or LibreOffice. All processing happens locally in your browser.

When You'd Actually Use This

Sharing data with Excel users

CSV is plain text. Excel files look more professional. Convert before sending to clients or colleagues who expect spreadsheets.

Importing to other systems

Some systems only accept Excel files. Convert your CSV export to the required format. Avoid manual re-entry.

Adding formatting later

Excel files support formatting, formulas, and multiple sheets. Start with CSV conversion, then enhance in Excel.

Preserving data types

Excel can interpret data types better than CSV. Dates, numbers, and text are handled appropriately on import.

Creating templates

Convert CSV data to Excel, then save as template. Reuse the structure for ongoing data entry and reporting.

Archiving data

Excel files are more self-documenting than CSV. Sheet names, headers, and structure provide context for future users.

What to Know Before Using

Output is XML-based Excel format.The .xls file uses SpreadsheetML. It opens in modern Excel versions. Some very old Excel versions may not support it.

Delimiter must match your data.Comma-delimited needs comma selected. Tab-separated needs tab. Wrong delimiter scrambles your columns.

First row becomes headers.The converter treats the first line as column headers. If your CSV has no headers, add a dummy first row.

Special characters are escaped.Ampersands, less-than, and quotes are XML-escaped. Your data is preserved correctly in the output file.

Pro tip: For .xlsx format (modern Excel), use a dedicated conversion tool or open the CSV directly in Excel and Save As .xlsx. This tool creates compatible .xls format.

Common Questions

What's the difference between CSV and Excel?

CSV is plain text with comma-separated values. Excel is a binary or XML format supporting multiple sheets, formulas, formatting, and more.

Can I convert multiple sheets?

This tool creates single-sheet files. For multiple sheets, convert each CSV separately and combine in Excel.

Does it preserve formulas?

CSV doesn't contain formulas, only values. The Excel file will have the calculated values, not the formulas that produced them.

What about large files?

Browser memory limits apply. Files with thousands of rows work fine. Very large files may need desktop conversion tools.

Can I specify data types?

This tool treats all data as text. Excel will interpret types on open. For specific types, format after opening in Excel.

Is my data secure?

Yes, conversion happens entirely in your browser. No data is uploaded to servers. Safe for sensitive business data.

Will this work on Mac?

Yes, the generated Excel file works on Mac, Windows, and Linux. Any spreadsheet application that reads .xls will work.

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Convert CSV to Excel Spreadsheet Online