PDF, XLS, CSV and 4 other spreadsheet formats can be converted to XLSX: drop your files above, and XLSX is already chosen as the output. Files are converted on our server and deleted 72 hours later.
What is an XLSX file?
XLSX – Microsoft Excel spreadsheet. XLSX is the spreadsheet format of Microsoft Excel since 2007: a ZIP of XML files with the sheets, cells, formulas, formatting and charts. Excel, LibreOffice Calc, Google Sheets and Numbers open it.
How to convert spreadsheets to XLSX
- Click Select File, or drop your spreadsheets anywhere on this page. Any of the 7 supported formats works.
- XLSX is already chosen as the output on this page.
- Click Convert, then Download when it's done.
XLSX at a glance
| XLSX | |
|---|---|
| Layout | Cells in sheets |
| Editable | Yes |
| Created by | Microsoft (Office Open XML), 2007 |
| Best for | Tables you want to calculate with |
Frequently asked questions
Why convert to XLSX?
XLSX is the spreadsheet format of Microsoft Excel since 2007: a ZIP of XML files with the sheets, cells, formulas, formatting and charts. Excel, LibreOffice Calc, Google Sheets and Numbers open it. Best for: Tables you want to calculate with.
Which spreadsheet formats can be converted to XLSX?
CSV, ET, NUMBERS, ODS, PDF, XLS, XLSM.
Is converting to XLSX free?
Yes. Everyone gets 25 free credits a day, with no account needed. Conversions on our server use one credit per started minute of work, so most cost a single credit. Credits reset at midnight UTC.
Are my spreadsheets uploaded anywhere?
These conversions run on our server. Your file is sent over an encrypted connection, and both it and the result are deleted 72 hours after the conversion. The server has no internet access while it works on your file.
Convert to XLSX from
- CSV to XLSX Converter
- ET to XLSX Converter
- NUMBERS to XLSX Converter
- ODS to XLSX Converter
- PDF to XLSX Converter
- XLS to XLSX Converter
- XLSM to XLSX Converter
All spreadsheet formats
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