Kilograms are a unit of mass, while Newtons are a unit of weight. Kilograms are related to Newtons in that w=mg. So the mass (in kilograms) times acceleration due to gravity on earth (9.81 meters/second squared) will give you weight (in newtons). read more
Relation between Newtons and Kilograms up vote 1 down vote favorite Work is expressed as $W=Fd$, where the $F$ is in Newton, $d$ is in meters and result $W$ is in Joules. read more