Local XLSX tools
Convert Excel to an HTML table
Convert a selected XLSX sheet to an HTML table locally. Preview the result, copy safe markup or download an HTML file.
Convert XLSX to HTML
Choose a local XLSX workbook up to 50 MiB. File contents stay in this browser.
Keep your original workbook
Selected files stay on your device. The source editor retains the original XLSX package and supported changes. Data exports use stored cell results and do not preserve workbook formulas or formatting; editing and calculation remain separate actions.
Use Edit source to keep working with the same workbook. Complex formulas and unsupported source features report their limits. Encrypted workbooks are not supported.