Microsoft Excel 4 for Mac chart file
File type: Document file
A .mcbn file is a chart file created by Microsoft Excel 4 for Mac.
It belongs to the legacy chart-file formats used by Microsoft Excel rather than to the modern Excel workbook format.
File type category:
Document file
Date updated: September 27, 2026
The MCBN file extension identifies a chart file from Microsoft Excel 4 for Mac, Microsoft's spreadsheet application. The file stores chart data and the information needed to represent the chart.
MCBN files were used as separate chart files in Excel 4 for Mac. The current default file extension used by Microsoft Excel for charts is the xlc.
MCBN is a legacy format and is not normally used by current versions of Microsoft Excel for Windows or Microsoft Office for Mac. Modern Excel generally stores charts in workbook files instead.
Open an MCBN file with a compatible version of Microsoft Excel for Mac, such as Excel 4 for Mac. Current versions of Excel for Windows and Microsoft Office for Mac may not recognize this legacy format directly.
If the file does not open, a suitable older Mac environment or a copy of the original Excel application may be required.
If a compatible version of Excel can open the file, use its save or export commands to preserve the chart in a newer Excel workbook or another supported chart format.
If the file cannot be opened by compatible Excel software, conversion may not be possible without first recovering it in an older Mac environment.
Software applications that handle other tasks involving mcbn files:
Microsoft Windows
Apple macOS / Mac OS X
Language
