Excel's workbook: several sheets, formulas, formatting. Best for spreadsheets people will edit.
At a glance
| Category | Data |
|---|---|
| MIME | application/vnd.openxmlformats-officedocument.spreadsheetml.sheet |
| Extensions | .xlsx |
| Compression | Lossless |
| Defined by | Microsoft |
| Since | 2007 |
| Open | - |
Convert from XLSX (11)
XLSX → CSVXLSX → TSVXLSX → XLSXLSX → ODSXLSX → JSONXLSX → NDJSONXLSX → YAMLXLSX → XMLXLSX → TOMLXLSX → HTMLXLSX → Markdown
Convert to XLSX (10)
CSV → XLSXTSV → XLSXXLS → XLSXODS → XLSXJSON → XLSXNDJSON → XLSXYAML → XLSXXML → XLSXTOML → XLSXHTML → XLSX
Comparisons
Questions
What is a XLSX file?
Excel's workbook: several sheets, formulas, formatting. Best for spreadsheets people will edit.
How do I open a .xlsx file?
Drop it on this page: we read it in your browser and can convert it to CSV, TSV, XLS, ODS, JSON.
How do I convert a XLSX?
Pick a target below: 11 conversions from XLSX are available, all in your browser.