>>>And, of course, you have to convert to the appropriate units, as you are already doing.
>>
>>Well... I would never call miles, feet, fps, mph etc appropriate units :)
>
>Is strange/foreign one word in spanish too?


There you go http://es.thefreedictionary.com/extranjero

Take the english translation towards the bottom


Update - strange and foreign http://es.thefreedictionary.com/extra%c3%b1o