Convert CSV to XLSX Online

Upload a table exported as CSV and select XLSX as the output. Converter processes the file online and gives you an editable Excel workbook.

Choose a file to convert

How to convert csv to xlsx

  1. Upload a .csv file.
  2. Choose XLSX and start the conversion.
  3. Download the XLSX result.

Example

Upload sales-data.csv and download sales-data.xlsx.

When to use this conversion

  • Open exported tabular data in Excel as an editable workbook.
  • Share a table with someone who expects an XLSX file.
  • Move CSV data into a spreadsheet-based review workflow.

Best practices

  • Check column headers and delimiters before uploading the CSV.
  • Review dates, leading zeros, and special characters in the XLSX result.
  • The converter supports up to 20,000 rows and 200 columns.