XLSX
Microsoft Excel Open XML Spreadsheet
XLSX is the default file format for Microsoft Excel since 2007. Like DOCX it is built on the Office Open XML standard and stores workbooks as a ZIP archive containing XML for each worksheet plus shared resources. It supports multiple sheets, formulas, charts, conditional formatting, and pivot tables.
| File extensions | .xlsx |
| MIME type | application/vnd.openxmlformats-officedocument.spreadsheetml.sheet |
| Developer | Microsoft |
| First released | 2007 |
| Category | Spreadsheets |
| Open standard | Yes |
What opens XLSX files
- Microsoft Excel (2007+)
- LibreOffice Calc
- Apple Numbers
- Google Sheets
- WPS Spreadsheets
Common conversions
Browse File Formats
Reference details for 53 file formats — extensions, MIME types, what opens each one, and how they convert.
7Z Archives ABW Documents AI Images AVIF Images AZW3 E-books BMP Images CSS Other CSV Spreadsheets DjVu E-books DOC Documents DOCX Documents EPS Images EPUB E-books FB2 E-books GIF Images GZ Archives HEIC Images HTML Documents ICO Images ISO Archives JPG Images JSON Other Keynote Presentations Markdown Documents MOBI E-books Numbers Spreadsheets ODP Presentations ODS Spreadsheets ODT Documents OTF Other Pages Documents PDF Documents PNG Images PPT Presentations PPTX Presentations PSD Images RAR Archives RAW Images RTF Documents SVG Images TAR Archives TeX / LaTeX Documents TIFF Images TSV Spreadsheets TTF Other TXT Documents WebP Images WOFF / WOFF2 Other WPD Documents XLS Spreadsheets XLSX Spreadsheets XML Documents ZIP Archives