Ounces per fluid ounce (US) to pounds per cup (US) conversion calculator above calculates how many pounds per cup (US) are in 'X' ounces per fluid ounce (US) (where 'X' is the number of ounces per fluid ounce (US) to convert to pounds per cup (US)). In order to convert a value from ounces per fluid ounce (US) to pounds per cup (US) (from oz/fl oz to lb/cup) simply type the number of oz/fl oz to be converted to lb/cup and then click on the 'convert' button.