not that hard wrote:
If you passed fifth grade math, you should be able to convert meters to feet/inches in your head in about a tenth of a second.
You should be hired by NASA.
NASA lost its $125-million Mars Climate Orbiter because spacecraft engineers failed to convert from English to metric measurements when exchanging vital data before the craft was launched.
True story:
http://articles.latimes.com/1999/oct/01/news/mn-17288