Convert CSV to Excel
Turn a .csv file into a proper .xlsx workbook, with automatic delimiter and encoding detection.
Privacy & processing: Runs entirely in your browser — your file is never uploaded to a server.
How to use this tool
- Upload a .csv file
- Confirm the detected delimiter and encoding
- Preview the table
- Download as .xlsx
Common use cases
- Opening exports from systems that only produce CSV
- Preparing CSV data for formulas and formatting
- Sharing a properly formatted spreadsheet
Limitations
Assumes standard comma-separated values with common encodings; CSVs using unusual delimiters or unsupported encodings may need to be re-saved first.
FAQ
Does this tool detect column types automatically?
Yes — numbers, dates, and text are typed automatically in the resulting worksheet rather than left as plain text.
What delimiter does it expect?
Standard comma-separated values. If your file uses semicolons or tabs, re-export it as comma-separated first.
Is my file uploaded to a server?
No — the conversion runs entirely in your browser.