Convert CSV to Excel
Convert a CSV file to an Excel .xlsx file in your browser. Detects the separator, keeps leading zeros, bolds and freezes the header row. Free, no upload.
When to use it
A CSV file opened by double-click often shows squashed columns, broken dates or lost leading zeros. Converting it to a proper .xlsx file fixes the layout in one step.
Drop in your CSV, check the preview and download an Excel workbook. Common separators are detected for you.
How it works
- Drop in your CSV file. The separator is detected for you.
- Choose whether to bold and freeze the header row and convert numbers.
- Download the Excel file.
Questions
Will it keep leading zeros in codes like 00123?
Yes. Values that start with a zero, such as phone numbers, postal codes and product codes, are kept as text so Excel does not strip the zeros. Plain numbers are converted to real numbers so you can add them up.
My CSV uses semicolons. Will it work?
Yes. Commas, semicolons, tabs and pipes are detected automatically. The preview shows what was found, so you can check the columns line up before you download.
Are accented and non-English characters kept?
Yes. UTF-8 and UTF-16 files are read correctly, and files saved in the older Windows-1252 encoding are handled as a fallback.
Is the file uploaded?
No. The conversion happens in your browser and nothing is sent to a server.
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