Free Tools for a Smarter YouCSV to Excel Converter
Turn CSV files into a proper Excel workbook: numbers you can add up, leading zeros kept, a bold header row that stays visible, and one sheet per file. Everything happens in your browser.
- PrivateYour data never leaves this device
- No uploadsProcessed in your browser, not on a server
- 100% freeNo signup, no watermark, no trial
- UnlimitedUse it as often as you like, no daily caps
CSV files
How to use the CSV to Excel
- Choose one or more CSV files, or paste CSV text.
- Check the delimiter (detected automatically) and the preview.
- Choose whether the first row is a header and whether numbers are stored as numbers.
- Click “Convert to Excel & download” to get an .xlsx file.
Frequently asked questions
Why not just open the CSV in Excel?
Excel guesses as it opens a CSV: it drops leading zeros from phone numbers and ZIP codes, turns long IDs into 1.23E+15, mangles accented text without a UTF-8 marker, and may put everything in one column. This converter keeps those values intact.
Can I combine several CSV files?
Yes. Choose several files at once and each becomes its own sheet, named after the file, in one workbook.
Which delimiters are supported?
Comma, semicolon, tab and pipe. The delimiter is detected from the first rows, and you can pick it yourself if the guess is wrong.
What encoding should my CSV use?
UTF-8 works best. Files that aren't valid UTF-8 are read as Windows-1252 (the encoding older Excel versions use), and a note tells you so you can check accented letters.
Is my data uploaded?
No. The CSV is read and the Excel file is built inside your browser, so nothing is sent to a server.