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Convert Kilograms and Newtons
At the poles, gravity is about 9.83 Newtons per kilogram, at the equator about 9.78. So the difference is very small, often it is calculated with 10 if the result does not have to be very precise. On the moon, gravitational acceleration is only 1.62 N/kg. On Earth, a kilogram has an average weight of 9.81 newtons, and a newton weight is caused by about 102 grams.
Kilogram is the SI coherent unit of mass, newton is the SI coherent unit of force. Sometimes the specification daN is seen. This stands for decanewton, 1 daN = 10 N.
Physics commonly uses SI units. Here is a calculator to convert units.