Text & code · runs locally
Convert CSV to Excel (XLSX)
CSV files straight into real spreadsheets — proper types, sensible column widths, multiple CSVs as multiple sheets.
Runs on your device
No uploads, ever
Free, no account
- 1Drop one or more CSVs
Several files become several sheets in one workbook.
- 2Check the typing
Numbers become real Excel numbers; IDs with leading zeros and 16+ digit values stay text.
- 3Download the workbook
Opens cleanly in Excel, Sheets, LibreOffice — you know the drill.
Questions people actually ask
Do the column widths get set?
Auto widths are applied so you don't open a workbook of ##### instantly. Fine-tuning remains a human pleasure.
Semicolon-separated CSVs?
The separator is detected automatically (comma, semicolon or tab), with a manual override if the detection guesses wrong.