{
 "id": "microsoft-excel-non-xml-binary-workbook-2007-onwards",
 "name": "Microsoft Excel Non-XML Binary Workbook",
 "category": "spreadsheet",
 "identifiers": {
  "extensions": [
   "xlsb"
  ],
  "mime": [
   "application/vnd.ms-excel.sheet.binary.macroenabled.12"
  ],
  "puid": [
   "fmt/595"
  ],
  "wikidata": [
   "Q66759528"
  ],
  "loc_fdd": [
   "fdd000512"
  ]
 },
 "status": "readable",
 "summary": "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.",
 "tools": [
  {
   "name": "LibreOffice",
   "url": "https://www.libreoffice.org",
   "license": "MPL-2.0",
   "open_source": true,
   "reads": true,
   "writes": false
  },
  {
   "name": "MediaRich Server",
   "url": "https://equilibrium.com/mediarichserver/",
   "reads": true,
   "writes": false
  },
  {
   "name": "Microsoft Office Excel 2007",
   "url": "https://www.wikidata.org/wiki/Q10329635",
   "reads": false,
   "writes": true
  }
 ],
 "projects": [
  {
   "name": "File Formats Wiki",
   "url": "http://fileformats.archiveteam.org/wiki/XLSB",
   "kind": "wiki"
  },
  {
   "name": "PRONOM fmt/595",
   "url": "https://www.nationalarchives.gov.uk/PRONOM/fmt/595",
   "kind": "format-doc"
  },
  {
   "name": "Wikidata Q66759528",
   "url": "https://www.wikidata.org/wiki/Q66759528",
   "kind": "wiki"
  }
 ],
 "provenance": {
  "sources": [
   "converters",
   "ffw",
   "pronom",
   "wikidata"
  ]
 },
 "updated": "2026-10-24",
 "version": "2007 onwards",
 "conversions": [
  {
   "to": "opendocument-spreadsheet-file-format-family",
   "tool": "LibreOffice",
   "command": "soffice --headless --convert-to ods in.xlsb",
   "fidelity": "partial",
   "losses": "Layout may shift; macros and some features are not kept.",
   "url": "https://www.libreoffice.org"
  },
  {
   "to": "microsoft-excel-for-windows-2007-onwards",
   "tool": "LibreOffice",
   "command": "soffice --headless --convert-to xlsx in.xlsb",
   "fidelity": "partial",
   "losses": "Layout may shift; macros and some features are not kept.",
   "url": "https://www.libreoffice.org"
  },
  {
   "to": "comma-separated-values",
   "tool": "LibreOffice",
   "command": "soffice --headless --convert-to csv in.xlsb",
   "fidelity": "lossy",
   "losses": "First sheet only, values only: formulas, formatting and other sheets are lost.",
   "url": "https://www.libreoffice.org"
  },
  {
   "to": "pdf",
   "tool": "LibreOffice",
   "command": "soffice --headless --convert-to pdf in.xlsb",
   "fidelity": "partial",
   "losses": "Fixed layout: the document is no longer editable.",
   "url": "https://www.libreoffice.org"
  }
 ],
 "aliases": [],
 "structure": [],
 "parsers": [],
 "samples": [],
 "claims": [],
 "verification": [],
 "family": "microsoft-excel"
}