01
ADD YOUR CSV
Drop the CSV file into the box above or choose it from your device.
CSV → XLSX / online converter
CSV to XLSX Converter
Open a CSV as a real Excel workbook. Columns are separated correctly even if your CSV uses semicolons, and numbers are stored as numbers.
01 / how to
How to convert CSV to XLSX
02
CONVERT TO XLSX
XLSX is already selected. Press Convert and wait a few seconds.
03
DOWNLOAD
Save the finished XLSX file. The original is deleted from our server.
02 / what you get
What happens to your data
Kept
- The first row is used as the header and empty lines are skipped
- The separator is detected for you (comma, semicolon, tab or pipe), so exports from regional Excel versions work
- Quoted cells that contain separators, quotes or line breaks are read correctly
- A clean Excel workbook with one sheet, where plain numbers are real numeric cells you can sum and sort
- Values like 007 or phone numbers stay text, so leading zeros are not lost
Good to know
- Values arrive as text and become numbers only where that is unambiguous and the target can hold numbers.
- The result is plain values on one sheet named Sheet1. There are no formulas, styles, column widths or charts.
- Dates stay as text, they are not converted to Excel date cells.
03 / formats
CSV vs XLSX
CSV
A CSV (Comma-Separated Values) file stores tabular data as plain text — each line is a row, commas separate the columns. It's the most universal way to move spreadsheet data between programs: Excel, Google Sheets, databases, and most apps can all read it.
Used in: Excel & Sheets exports · Database exports · Data sharing
XLSX
An XLSX file is a modern Excel workbook: sheets of cells with numbers, text, formulas and formatting. It is the default for spreadsheets today. Converting it gives you the first sheet as plain data (JSON keeps every sheet), so other tools can read it.
Used in: Excel · Business reports · Financial data
04 / more
More conversions
Have a different file? Open the main converter — it detects the format for you.