Excel to CSV Converter

Upload an .xlsx file and get plain CSV output instantly.

Click to upload .xlsx / .xls

or drag & drop here

About the Excel to CSV Converter

This tool converts Excel to CSV, reading XLSX and XLS workbooks and writing plain comma-separated text. Cell values are exported as displayed, so dates and long numbers do not turn into serial numbers or scientific notation.

Convert Excel to CSV whenever something downstream refuses a workbook. Database importers, command-line scripts, billing systems and most bulk-upload forms want plain CSV, and a spreadsheet full of formulas, merged cells and formatting is not that.

Formulas are resolved to their calculated values, so the CSV contains the numbers a person sees rather than =SUM(B2:B40). The awkward cases are handled deliberately: dates stay readable instead of becoming Excel serial numbers, and long identifiers keep their digits instead of collapsing into scientific notation.

If your workbook has several sheets, convert the one you need — CSV is a single table by definition and cannot hold multiple tabs.

How to use the Excel to CSV Converter

  1. Upload the workbook. Drag an XLSX or XLS file onto the drop zone or browse for it.
  2. Pick the sheet. Choose which sheet to export, since a CSV holds one table.
  3. Convert. Run the conversion. Formulas are resolved to their calculated values.
  4. Download the CSV. Save the file, ready for your import or script.

Excel to CSV Converter features

  • Supports XLSX and XLS file formats
  • Multiple worksheet handling
  • Accurate data preservation
  • Formula to value conversion
  • Large file processing capability
  • Instant download of CSV files
  • Maintains data structure integrity
  • Professional business interface
  • Secure server-side processing
  • Cross-platform compatibility

Frequently asked questions

Are formulas exported or their results?

Their results. Formulas are resolved to calculated values, so the CSV contains the numbers you see in the sheet.

Will my dates survive the conversion?

Yes. Dates are written as readable text rather than Excel serial numbers.

Can I convert a workbook with several sheets?

Convert one sheet at a time. CSV holds a single table and cannot represent multiple tabs.

Do long numbers keep all their digits?

Yes. Long identifiers and codes are written in full rather than being collapsed into scientific notation.

Are XLS and XLSX both supported?

Yes. Legacy XLS and modern XLSX workbooks are both accepted.