View and edit Excel spreadsheets directly in your browser with our free online Excel Viewer & Editor. This powerful tool allows you to open, view, and modify both .xls and .xlsx files without installing Microsoft Office or any other software. Perfect for users who need to quickly inspect spreadsheet data, make simple edits, or export Excel files on any device including computers, tablets, and mobile phones.

Our Excel viewer features a fully interactive spreadsheet interface powered by Handsontable, supporting multiple sheets, cell editing, column resizing, row sorting, and filtering. All processing happens locally in your browser using JavaScript, ensuring your sensitive business data remains completely private and secure. No files are uploaded to any server - your data never leaves your device, making it ideal for confidential financial reports, personal data, and proprietary business information.

Simply upload your Excel file or drag and drop it into the viewer, and the tool will automatically parse and display your data in a beautiful, familiar spreadsheet-like interface. Switch between multiple sheets using the dropdown menu, edit any cell by double-clicking, and export your modified data back to Excel format with a single click. Experience lightning-fast performance and support for large files, complete with formula value display and automatic data type detection.