On Linux this is great. Just about anything you want to convert from and to, and things you really wouldn’t want to like teaspoons to kilometers. But, if that is what you want, you are free to do it. No limitations.
ConvertAll does unit conversions of all sorts (current, historical, obscure, you name it) in a simple clean interface. I've been using this for years on my pc, now if only someone would write an android app along similar lines.
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