CSV to Excel Converter

Convert CSV or tab-separated data to a real Excel .xlsx file in your browser. Styled header, frozen row, filters, auto column widths and leading zeros preserved.

  • Free, no sign-up
  • Runs in your browser
  • Your data stays private

How to use the CSV to Excel Converter

  1. Paste CSV text or upload a CSV file.
  2. Set the sheet name and options such as a styled header and numbers as numbers.
  3. Click Download to save the .xlsx file, or Copy to paste into Excel.

Why use this CSV to Excel Converter

  • Real XLSXCreates a genuine Excel workbook, not a renamed CSV.
  • Header stylingBold shaded header, frozen first row and filter buttons.
  • Leading zeros keptValues like 00123 stay as text so codes and ZIPs are not damaged.
  • PrivateThe file is built in your browser and never uploaded.

Frequently asked questions

How do I convert CSV to Excel?

Paste or upload the CSV, then press Download to get an .xlsx workbook.

Why do my leading zeros disappear in Excel?

Excel treats them as numbers. This tool keeps values with leading zeros as text.

Does it work with semicolon or tab files?

Yes. The separator is detected automatically.

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