Metric System Unit of Weight
The metric system standard unit of weight is the gram and kilograms. A dollar bill weighs one gram. A regular size paper click weighs 1 gram. A nickel weigh about 5 grams (5g).
1,000 grams (g) = 1 kilogram (kg)
A 2-liter bottle of water weighs about 2 (kg)
100 lb is about 45 kilograms (kg).
25 lb is about 45 kilograms (kg).
1 lb is about .45 kilograms (kg).
Metric system weight table