Win32 and 64, English

@The Office
DDCalc is an on screen graphical calculator within Autodesk® AutoCAD® that supports feet, inch & fractional numeric entries.

General Usage Instructions

Start the on screen calculator by typing DDCalc or 'DDCalc to invoke transparently.

Pick on the corresponding numeric value buttons and then the desired mathematical or trigonometric functions to be performed.

Feet and Inches as well as fraction numbers are supported.

You can also select the precision of the resultant calculation from a dropdown list.



Ribbon/Toolbar Icon Command Command Description


DDCalc launches the Ft-Inch Calculator app on the graphic screen. A user can then use his mouse to click various number combinations and then select the mathematical calculations desired to come up with a result. The result can also then be passed to the command line as a response to an ongoing command.


The installer that ran when you downloaded this app/plug-in from Autodesk App Store will start installing the app/plug-in. OR, simply double-click the downloaded installer to install the app/plugin. You may need to restart the Autodesk product to activate the app/plug-in. To uninstall this plug-in, exit the Autodesk product if you are currently running it, simply rerun the installer, and select the "Uninstall" button. OR, click Control Panel > Programs > Programs and Features (Windows 7/8.1/10/11) and uninstall as you would any other application from your system.

Additional Information

Known Issues



Author/Company Information

@The Office

Support Information

Version History

Version Number Version Description


Added 2025 support.
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