Spreadsheet Converter Tools Online
Convert spreadsheets between Excel, CSV, ODS, and HTML while preserving tables, formulas, and cell structure. Perfect for reporting and data migration workflows.
Drop file or click to upload
Support for 225+ formats • Max 100MB • Deleted immediately after download
📈 Why Choose Our Spreadsheet Converter?
Data Integrity
Keep formulas, numbers, and headers consistent across formats
Formatting Preserved
Maintain table styles, cell alignment, and column widths
Batch Ready
Fast processing for large sheets or multiple files
About Spreadsheet Conversion Tools
Spreadsheet data is used across every industry for financial reporting, data analysis, inventory management, and business intelligence. When data needs to move between different applications, format conversion becomes essential. FilesTool offers free online spreadsheet conversion tools that handle Excel, CSV, JSON, ODS, and PDF formats without any software installation.
Our spreadsheet converters support XLSX, XLS, CSV, ODS, JSON, and PDF formats. Whether you need to convert Excel to CSV for data exchange, transform JSON data into a spreadsheet, or export a spreadsheet to PDF for sharing, all tools work instantly in your browser. No Microsoft Office or any other software is required just upload your file and download the converted result.
Frequently Asked Questions
Can I convert Excel to CSV without Microsoft Office?
Yes. Our Excel to CSV converter works entirely in your browser. No Microsoft Office or any software installation is needed.
Will formulas be preserved?
When converting to CSV or JSON, formulas are converted to their calculated values. When converting between XLSX and ODS, formulas are generally preserved.
Can I convert multiple sheets?
Currently our tools process the active/first sheet. For multi-sheet workbooks, you can convert sheets individually.