Microsoft Excel Template 2007 onwards
Unknownspreadsheet
From Microsoft Office 2007 onwards, the core output format of MS Excel has been based on the Office Open XML (OOXML) file format. The ISO standard for OOXML is ISO/IEC DIS 29500. An OOXML file format consists of a compressed zip archive that is designated according to which file type it is. Further detail on OOXML can be found within fmt/189 - Microsoft Office Open XML.
Identify it
| Extensions | .xltx |
|---|---|
| MIME types | application/vnd.openxmlformats-officedocument.spreadsheetml.template |
| PRONOM | fmt/598 |
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Open it
No software is recorded for this format — see its family, Microsoft Excel.
Convert it
No conversion recorded. One of the tools above may export it; search for a chain.
Sources
From PRONOM. Updated 2013-11-12.