Multiple Formats
Convert between CSV, XLSX, XLS, and XML formats. Support for all major spreadsheet file types with accurate data preservation.
Free Spreadsheet Converter
Convert between CSV, XLSX, XLS, and XML file formats instantly. Upload your spreadsheet files and convert them to your desired format with client-side processing for complete data privacy.
Upload Your Spreadsheet File
Supported formats: CSV, XLSX, XLS, XML • Maximum file size: 10MB
Drop spreadsheet file here or click to upload
Supports CSV, XLSX, XLS, XML files up to 10MB
Why Use Our Spreadsheet Converter?
Client-Side Processing
All conversions happen in your browser using JavaScript. Your sensitive data never leaves your device for complete privacy.
Data Preview
See a preview of your data before conversion to ensure everything looks correct. View structure and formatting before download.
Instant Download
Download your converted files immediately after processing. No waiting, no email delivery - get your files instantly.
No File Size Limits
Process files up to 10MB in size. Handle large spreadsheets with thousands of rows without performance issues.
Free & Unlimited
Convert unlimited files for free. No registration required, no hidden fees, and no conversion limits.
Frequently Asked Questions
What file formats can I convert?
You can upload CSV, XLSX, XLS, and XML files and convert them to CSV, XLSX, or XLS formats. All conversions maintain data integrity and structure.
Is my data safe and private?
Yes! All file processing happens entirely in your browser using JavaScript. Your files never get uploaded to our servers, ensuring complete data privacy.
What's the maximum file size I can convert?
You can convert files up to 10MB in size. This allows for spreadsheets with thousands of rows and multiple columns without issues.
Will formatting be preserved during conversion?
Basic data structure and content are preserved. However, advanced formatting like colors, fonts, and formulas may not transfer between all formats.
Can I convert multiple files at once?
Currently, the tool processes one file at a time. You can convert multiple files by uploading and converting them individually.
Do I need to install any software?
No installation required! The converter runs entirely in your web browser. Just upload your file and start converting immediately.
What happens to my files after conversion?
Since processing happens in your browser, no files are stored on our servers. When you refresh the page, all data is automatically cleared.
Why can't I convert to XML format?
XML has various structures and schemas. We focus on the most common spreadsheet formats (CSV, XLSX, XLS) to ensure reliable conversions for business use.