Ounces to hundredweights (US) conversion calculator above calculates how many hundredweights (US) are in 'X' ounces (where 'X' is the number of ounces to convert to hundredweights (US)). In order to convert a value from ounces to hundredweights (US) (from oz to cwt) simply type the number of oz to be converted to cwt and then click on the 'convert' button.