Question 1

How do I convert CSV to Excel for free?

Accepted Answer

Paste your CSV data into the input area, choose your delimiter (comma, semicolon, tab or pipe) and click Convert. Then click Download to save the file as .xls or .xlsx, which opens directly in Microsoft Excel, Google Sheets or Apple Numbers.

Question 2

What is the difference between CSV and XLSX?

Accepted Answer

CSV is a plain-text comma-separated file with no formatting, types or formulas. XLSX is the modern Excel binary format that supports multiple sheets, cell types (number, text, date), styling and formulas. This tool generates a SpreadsheetML 2003 .xls file that Excel and Sheets open natively without any external library.

Question 3

Can I convert CSV with semicolons or tabs?

Accepted Answer

Yes. Use the Delimiter dropdown to pick comma, semicolon, tab or pipe. The parser also handles quoted fields containing the delimiter and embedded newlines, so exported CSVs from European locales or databases convert correctly.

Question 4

Is my CSV data uploaded to a server?

Accepted Answer

No. All parsing and file generation happen locally in your browser. Your data never leaves your device, so it is safe for sensitive records like customer lists or financial exports.