The result of a calculation can be copied to the clipboard for pasting into other applications. Once a calculation has been performed click the unit-field in the results window and press CTRL+C, or choose the option from the Edit menu. The resulting quantity is now available to other applications. If the toolbar is visible then you can also use the toolbar to copy to the clipboard - the button will become enabled once a calculation is available for copying.
You can also copy a formatted description to the clipboard. This details the full conversion for the selected line, e.g.
9 Rankine = -268.15 Celcius
The copy facility works like this: If you have a result-line selected on the right hand side then you get the fully formatted conversion, like the example above. if you don't have a result-line selected then you just get the source unit and value.