How to use this office tool
- Select or drop the supported file.
- Review the detected sheet and adjust the operation-specific options.
- Process the file, inspect the limited preview and output counts, then download the new result.
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Choose an HTML file containing one or more tables. The converter finds each table, uses its caption or order for the sheet name, previews the first table, and creates a new Excel workbook.
HTML tables become workbook worksheets; merged cells and basic text are retained where the browser can identify them.
HTML files with standard table markup are supported. Complex tables may be flattened to a rectangular worksheet.
HTML files with standard table markup are supported. Complex tables may be flattened to a rectangular worksheet.
| Format | Use |
|---|---|
| XLSX / XLS | Workbook data and formulas where applicable |
| CSV / TSV | Delimited tabular data with detected quoting |
No. Processing happens in your browser, and the selected file is not sent to Calloffice.
Formula cells are preserved where the selected operation can retain them, but the browser does not reproduce Excel's full calculation engine.
Yes, within your browser's available memory. The preview is capped, and very large workbooks may take longer or need to be split first.
The tool uses displayed spreadsheet values where appropriate and avoids intentional numeric conversion unless the selected operation requires it. Review identifier columns after export.
Check the preview, output counts, headers, and a few representative rows. Keep the original file until the result has been verified.
| Stage | Behavior |
|---|---|
| Input | Spreadsheet Conversion |
| Privacy | Local browser processing |
| Download | Newly generated result file |