Free & Instant

Convert XLSX to CSV Online — Free Spreadsheet Converter

Transform Excel XLSX files to comma-separated CSV format.

Upload your file

Drag & drop your .xlsx file here, or browse
Multiple files supported

.XLSX.CSV

Maximum file size: 500 MB · Multiple files supported

100% private — files are processed in your browser, never uploaded

How It Works

XLSX to CSV in 4 Easy Steps

Convert XLSX to CSV in seconds — no sign-up, no upload, no catch.

  1. 1

    Upload XLSX file

    Drop your .xlsx or .xls file or click Browse.

  2. 2

    CSV auto-selected

    CSV is pre-selected as the output format.

  3. 3

    Convert locally

    Your spreadsheet is parsed and exported as CSV in your browser.

  4. 4

    Download CSV

    Save your CSV file.

Use Cases

Why convert XLSX to CSV?

  • Import Excel data into databases
  • Share spreadsheet data in a universal format
  • Prepare data for scripting languages
FAQ

Frequently Asked Questions

The first sheet is converted by default. Multiple sheets can be exported separately.

CSV only contains values, not formulas. Use XLSX for formula preservation.