Open XLS Files Online Without Excel
Open a XLS file online without Microsoft Excel - a free XLS file opener and viewer that runs in your browser. No signup, no install, 100% private - your files never leave your device.
Drop your file here or click to upload
Supports .xls · up to 50MB
How to Open XLS Files Online Without Excel
- Upload your file - Drag and drop your XLS file or click to browse.
- View your data - Your spreadsheet will be displayed in a familiar grid format.
- Navigate sheets - Use tabs to switch between different sheets.
- Export if needed - Download as CSV or use our conversion tools.
About XLS Files
XLS is the legacy Excel format from Excel 97-2003. While older, it's still widely used in many organizations. Our viewer fully supports XLS files, allowing you to view legacy spreadsheets without compatibility issues.
Use this free XLS viewer online to open an XLS file online and read old Excel 97-2003 workbooks without installing Excel. Everything runs in your browser, so you can view XLS files online privately and then convert them to modern .xlsx when you are ready.
XLS Viewer vs. Other Ways to Open Spreadsheets
| Option | Install required | Cost | Privacy | Best for |
|---|---|---|---|---|
| ExcelTool.io XLS Viewer | None - works in your browser | Free | Files stay on your device | A quick, private look at a XLS file online |
| Microsoft Excel | Desktop install / license | Paid (Microsoft 365) | Local | Full editing and advanced features |
| Google Sheets | Google account | Free | File is uploaded to Google | Collaboration and editing online |
| Download-based viewers | App download / setup | Varies | Local after install | Offline desktop viewing |