On Earth, a kg is 9.81N. Presuming only that this is on Earth or a planet of the same gravity, you have (30)(9.81), or 294.3N.
Newton.metre is a unit of moment (torque); a translation in kg is not possible.
1 N.m = 1 kg.m2/s2.
On or near the surface of the Earth, 30 newtons is the weight of 3.059 kilograms
of mass. In other places, it's the weight of a different amount of mass.
3000
2447.32 kg force
kN x 101.97 = kg
0.065kN is 66.3kgf
3kN is about 305.9kgf
1,428 kg
858kN is 87,492 kilograms.
12,240kg at Earth's surface.
1000 Kn wou much Kg
1,632 kg
kN x 101.97 = kg
6,744 pounds at Earth's surface.
5.5 kg * 9.81 m/s^2 = 53.955 KN