1 Newton (N) is the force needed to accelerate 1 kg by 1 m/s². Earth's gravity exerts about 9.81 N on every 1 kg (your weight in Newtons ≈ kg × 9.81).
Q: What is kilogram-force (kgf)?
1 kgf is the force exerted by 1 kg under standard gravity = 9.80665 N. Used in engineering in India and many countries. A 70 kg person has weight of 70 kgf = 686.5 N.