Convert XLSX to CSV

Free online XLSX to CSV converter.

Choose .xlsx files

or drag and drop — multiple files supported

Max 200 MB for video · 100 MB for other files

Related converters

JSON → CSVCSV → XLSXCSV → JSONJSON → YAMLYAML → JSONXML → JSONJSON → XMLMD → HTMLHTML → MD

Why convert XLSX to CSV?

CSV is the universal data exchange format. Every database, programming language, and data tool can read CSV. Converting XLSX to CSV strips out formatting and formulas, leaving you with clean, portable tabular data that imports anywhere.

Common use cases

  • Importing spreadsheet data into databases
  • Preparing data for Python/R analysis
  • Uploading data to web applications
  • Cleaning and flattening Excel data for ETL pipelines

How to convert XLSX to CSV

  1. Click "Choose a .xlsx file" or drag and drop your XLSX file into the upload area.
  2. Select your preferred quality level — high quality keeps the best fidelity, smaller file prioritizes file size.
  3. Your file uploads directly to our secure servers and conversion starts automatically.
  4. Once finished, click "Download" to save your converted CSV file.

Tips for XLSX to CSV conversion

  • Only the first (active) sheet is exported. Multi-sheet workbooks will lose the other sheets.
  • Formulas are exported as their computed values, not the formula text.
  • Cell formatting (colors, fonts, borders) is removed — CSV is plain text only.

About XLSX and CSV formats

.XLSX format

XLSX is Microsoft Excel's modern spreadsheet format. It supports multiple sheets, formulas, formatting, charts, and large datasets. The standard for business spreadsheets.

.CSV format

CSV (Comma-Separated Values) is a plain text format for tabular data. Each line is a row, values separated by commas. Universally supported by spreadsheet applications, databases, and programming languages.

Frequently asked questions

What happens to formulas?

Formulas are evaluated and the resulting values are exported. For example, a cell with =SUM(A1:A10) will export as the computed number.

Can I convert multi-sheet XLSX?

Currently only the active (first) sheet is converted. Each sheet would need to be converted separately.

Convert other formats to CSV

JSON to CSV

Privacy and security

Your files are encrypted during upload using 256-bit SSL and are automatically deleted from our servers within 24 hours. We never share, sell, or access your files. All conversions happen on isolated, ephemeral servers.