XLS to XLSX converter
To convert XLS to XLSX, drop your XLS file in the box below. It converts straight away; press Download to save the XLSX. It all happens in your browser, so your file stays on your device.
Convert to
Converted on this device, never uploaded
What changes
| XLS to XLSX | What happens |
|---|---|
| Values | Numbers, text, true and false, errors, formula results |
| Dates | Read through the cell’s format, written as real dates |
| Sheets | One sheet per file: pick which one |
| Not kept | Formulas themselves, formatting, charts, macros |
How to convert XLS to XLSX
- Add your XLS. Drop the file in the box, or click to choose it. It becomes XLSX straight away.
- Check the result. Look at the preview. The delimiter and value types are set for you; change them if needed.
- Download. Press Download to save the XLSX.
Why XLSX
Open an old Excel 97 to 2003 workbook as a modern XLSX file.
Questions
Their last calculated values are. The formulas themselves are not copied.
Yes, Excel 5 and 95 workbooks (BIFF5) too.
No. The conversion happens right in your browser, so your file stays on your device. There is no account to make, either.