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Do you automatically know how many kilograms are in a pound?
I do. It’s 0.45359237. I have to know this because I also write about tech outside the United States, and while feet and pounds are used to measure some things in the United States, almost every other country has adopted the metric system.
You probably also convert units of currency, measurement and more from one type to another often. Doing these calculations mentally can be tricky, so let an app do it.