5 ms·Speaking of which, miles per hour get converted in m/s, which is not very usefulby lindbergh 11y agoSpeaking of which, miles per hour get converted in m/s, which is not very usefulfranole 11y agoThey are both base units of the SI http://en.wikipedia.org/wiki/SI_base_unit http://en.wikipedia.org/wiki/SI_base_unitjobigoud 11y agoJust tell it the output unit you want. 30 mph in km/h