Convert XLSX to CSV for imports, analytics, and databases. Single-sheet files download as CSV, multi-sheet files as a ZIP.
Accepted format: .xlsx
Size up to 100MB
Files deleted automatically
Secure upload (SSL)
Convert your Excel file in 3 simple steps. Fast, secure, and free.
Drag and drop your .xlsx file or click to browse. Maximum size is 100MB.
We export your workbook to CSV. Multi-sheet XLSX downloads as a ZIP (one CSV per sheet).
Your converted file will download automatically in your browser.
We open your XLSX with LibreOffice, a trusted open-source office suite, and export a CSV that matches what you see in the spreadsheet.
CSV is plain text, so we export values in a clean, import-ready table. If your workbook has multiple sheets, you will receive a ZIP with one CSV per sheet.
No installation and no account required. Convert files up to 100MB, and temporary files are cleaned up automatically after the download.
A simple overview of the features and benefits of the formats
XLSX is a modern spreadsheet format developed by Microsoft, serving as the default file type for Excel since Office 2007. It is based on the Open XML standard, where data is stored as compressed ZIP archives, reducing file size and enabling faster processing. XLSX files support spreadsheets, charts, graphs, complex mathematical formulas, and data analysis. Besides Microsoft Excel, XLSX files are compatible with Google Sheets, LibreOffice, and Apple Numbers.
CSV (Comma-Separated Values) is a plain text file format used for storing and transferring tabular data. Each line in a CSV file represents a separate row, with column values separated by delimiters such as commas, semicolons, or quotation marks. CSV files are recognized by nearly all spreadsheet programs, making them ideal for exporting and exchanging data between different applications. However, unlike XLSX, CSV files do not support charts, formulas, formatting, or macros.
The XLSX to CSV converter transforms modern Excel files into plain text format, making your data accessible to databases, analytics tools, and programming languages. CSV (Comma-Separated Values) is a universal data exchange format that can be opened by virtually any spreadsheet application, database system, or programming language like Python, R, and SQL. Our converter extracts raw cell values without formatting, charts, or formulas, creating lightweight files ideal for data imports, API integrations, and analysis workflows. For multi-sheet workbooks, we compress each sheet into a separate CSV file within a ZIP archive.
Today's tip: Multi-sheet XLSX files are downloaded as a ZIP archive containing one CSV file per sheet. The sheet names become the CSV filenames. When importing into your target system, ensure you process each CSV file separately and map sheet names to appropriate database tables or data structures.
Answers about XLSX to CSV export, encoding, multi-sheet workbooks, and privacy.
Yes. You can convert XLSX to CSV for free, with no subscriptions.
In the output file, the separator character will be a comma.
No. CSV is plain text and cannot store formatting, charts, images, or shapes. It keeps rows and columns of data only.
CSV cannot store formulas. We export the calculated values that appear in cells.
You'll receive a ZIP archive containing one CSV per sheet. Single-sheet workbooks are downloaded as a single CSV.
We export UTF-8 CSV with a BOM to improve compatibility with spreadsheet apps and CSV import tools.
You can upload and convert spreadsheets up to 100MB.
Yes. Uploads are protected with SSL encryption, and converted files are deleted automatically after download.
Our Desktop Converter handles multiple files and large volumes offline