Convert XLSX to CSV
Instantly transform your Microsoft Excel Workbook into CSV Spreadsheet Data without uploading your files to any remote servers.
100% Client-Side Privacy Guaranteed
Quick Answer
Yes, OmniTools converts XLSX to CSV directly in your browser with zero registration or payment required.
Upload XLSX file
Automatic format detection • 100% in-browser processing
Max size: 100MB•100% In-Browser Privacy
Need more options?
How to Convert XLSX to CSV
1
Step 1
Upload your .xlsx file into the drag-and-drop zone.
2
Step 2
Select CSV as the target format and adjust options if needed.
3
Step 3
Click Convert to process the file locally in your browser and download the result.
XLSX vs CSV: Key Differences
Microsoft Excel Workbook
XML-based spreadsheet file format native to Microsoft Excel.
Extensions: xlsx
CSV Spreadsheet Data
Comma-Separated Values tabular data format readable by spreadsheet and database systems.
Extensions: csv
Related Conversions
Frequently Asked Questions
Simply drag and drop your XLSX file into the converter, select CSV, and click Convert.