The metric system was accepted by many countries. However, the “kilogram” was eventually replaced. It is still the most widely used weight unit in the US, UK and Canada.
16 fluidoz weigh one pound At 32 degrees Fahrenheit when water is sufficiently cold to freeze, the specific water weight is 8.34 lbs per gallon. So 16 ounces of water weighs 1.05 lbs.