Add unit conversion on height/weight

Hello, being this an international site, it would be nice if weight and height measurements in the personal info were expressed using also the metric system. Many users in the world (Europe except UK and Ireland, Central and Latin America, Africa, Asia) don't use the imperial system and it's not immediate to them to figure out by heart the corresponding metric value. It could be enough to simply add, in bracket, the converted unit in metric system aside to the imperial one e.g. for weight: 200 lb (90 kg); for height: 6'2" (188 cm). Quite simple - it's just a mathematical conversion - but more user friendly and more international.