1ml = 1cm^3 of water weighs almost exactly 1 gram. A liter of water (1000ml = 1000 cm^3) weighs almost exactly a kilogram. http://www.wolframalpha.com/input/?i=

1ml = 1cm^3 of water weighs almost exactly 1 gram. A liter of water (1000ml = 1000 cm^3) weighs almost exactly a kilogram. http://www.wolframalpha.com/input/?i=weight%20of%201cm^3%20of%20water http://www.wolframalpha.com/input/?i=weight%20of%201cm^3%20o...