It'd be useful if the calculator supported the constant tau (tau = 2 * pi). Tau is a nicer constant than pi for a number of reasons -- see http://tauday.com/ .
While I realize that tau isn't used very widely yet, it is gaining momentum. Even Google's calculator now supports tau.
IA Page: http://duck.co/ia/view/calculator
Maintainer: @GuiltyDolphin
:+1: @GuiltyDolphin
@12people You don't need to convince me ;) - I'm an advocate of Tau already.
Enjoy!

Awesome, thanks! 馃憤
Thanks for the suggestion @12people :)
@GuiltyDolphin Any idea when this will be in the production version of DuckDuckGo? It's not working for me.
@12people No, sorry - the calculator rewrite is low priority at the moment as we are focussed on the programming mission. I'll let you know if there are any updates.
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@12people You don't need to convince me ;) - I'm an advocate of Tau already.
Enjoy!