Convert from nanogram to quintal [Portugal]

Unit Definition (nanogram)
The nanogram is a metric unit of mass equal to 10E-9 gram, or one millionth of a milligram.

Unit Definition (quintal [Portugal])
The quintal [Portugal] is a traditional unit of weight in Portugal. The Portuguese quintal is equal to 128 libras (about 129.5 pounds or 58.75 kilograms).