Excel Converter
Convert files to and from Excel — free, online, no signup.
up to 50 files at once
auto-delete in 24h · no signup · no watermark
Command Palette
Search for a command to run...
XLSX is the default Excel format since Office 2007, an Open XML workbook of cells, formulas, formatting, and charts. It is made for calculating and editing — but to print a report, share read-only numbers, or lock formulas as values, a fixed PDF rendered to the sheet’s print settings is the right output.
| Full name | Microsoft Excel Spreadsheet (OOXML) |
| Developer | Microsoft |
| Released | 2007 |
| Type | Document format |
| Typical use | reports, financial sheets, read-only data |
| MIME | application/vnd.openxmlformats-officedocument.spreadsheetml.sheet |
Convert from Excel
Frequently asked questions
How do I open a Excel file?
XLSX is the default Excel format since Office 2007, an Open XML workbook of cells, formulas, formatting, and charts. It is made for calculating and editing — but to print a report, share read-only numbers, or lock formulas as values, a fixed PDF rendered to the sheet’s print settings is the right output. If a device refuses to open it, the fastest fix is converting it to a more universal format with the converter above.
Is converting Excel files free?
Yes — 10 conversions a day with files up to 200 MB, free, with no signup and no watermarks.