text: You need to reference a pipe table (http://www.grantprideco.com/drilling/catalog/pdf/Catalog%20Tables%20-%20%20FINAL%20with%20calculations%20-%20March%202005.pdf) to get the weight in lbs.  Next you need a conversion table (http://www.onlineconversion.com/weight_common.htm).  Input your data and you have your answer.