Ounces per pint (US) to milligrams per liter conversion calculator shown above calculates how many milligrams per liter are in 'X' ounces per pint (US) (where 'X' is the number of ounces per pint (US) to convert to milligrams per liter). In order to convert a value from ounces per pint (US) to milligrams per liter (from oz/pt to mg/L) just type the number of oz/pt to be converted to mg/L and then click on the 'convert' button.