Sure, it’s totally geeky and gratuitous, but Google’s new calculator service is surprisingly useful. I’ve always been annoyed at having to open a separate app just to do a quick bit of arithmetic, and oddly enough, I’m often without any scraps of paper to write on. I often resort to switching to a terminal window and running the great-but-ancient dc to do math, which is kind of an abstruse solution.

But since Google has become the search engine of choice over the last few years, there has been a proliferation of ways to access it. Most browsers allow you to enter queries in either a separate field or the address bar, and programs like Huevos give you a hotkey for quick searching access. Given that there’s all this infrastructure dedicated to giving you quick access to a single text field, packing more functionality into that field actually turns out to be incredibly handy.