Those are not really compatible units; newtons is a unit of force, kilogram is a unit of mass.
Assuming normal Earth gravity, you can divide the weight in newtons by 9.8 to obtain the corresponding mass in kilograms.
100,000 kg = 980,700 newtons
25.9 kg = about 254 newtons.
7840 newtons
5.9 kg weighs 57.82 newtons (on earth, rounded), regardless of what those kg are composed of.
On Earth, 6 kg of mass weighs 58.84 newtons. (rounded)
74 kg of mass weighs 120.1 newtons (27 pounds) on the moon, and the same 74 kg weighs 726 newtons (163 pounds) on Earth.
74 pounds = about 329.2 newtons.
100,000 kg = 980,700 newtons
25.9 kg = about 254 newtons.
7840 newtons
1 kg of mass weighs 9.81 newtons on Earth and 3.7 newtons on Mercury.
Newtons are a measure of force, kg*m/s2
5.9 kg weighs 57.82 newtons (on earth, rounded), regardless of what those kg are composed of.
81 newtons.
81 newtons.
41.1894 newtons.
735 newtons.