Excel (XLSX) → CSV

Files stay on your device when the selected browser engine supports local processing.

Select files: Excel Data (XLSX)

Drop files here or click to browse.

Processing takes place in your browser; the selected files are not uploaded.

Limited conversion Features that the target format cannot represent may be flattened, simplified or omitted.

About Excel (XLSX) to CSV conversion

What this conversion does

Excel (XLSX): Excel workbooks in XLSX format with cells, sheets and potentially formulas. CSV: Tabular text separated by delimiters; quoting and separators matter.

When to use CSV

  • When an app, device or website requires CSV instead of Excel (XLSX).
  • When CSV is a better fit for your editing, sharing or storage workflow.

What to know

  • Processing takes place in your browser; the selected files are not uploaded.
  • Features that the target format cannot represent may be flattened, simplified or omitted.
  • Flat outputs use the first worksheet. Formulas and styles may be omitted.
  • Data types, formulas and styles are not stored. Choose the correct delimiter and character encoding.
  • Check column names, empty values and data types after conversion. Nested structures and spreadsheet formatting do not always fit the target format.