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by perryprog 2203 days ago
Not to mention, Spotlight does a /bunch/ of unit conversions. You can even type things like `1km/h to kt` for example. There's quite a few units defined already that I'm usually pleasantly surprised. This also works on iOS.

The one downside is you can't do unit conversions of a mathematical expression, just of a number. (i.e., 2^2 m/s does not work but 4 m/s does).

Whenever I have to do something more complicated I usually use M-x calc or maxima with ezunits.