Question: 1 newton is equivalent to how many kg?
Answer: Convert Newtons to Kilograms 1 Newton: 1 Newton in Earth gravity is the equivalent weight of 1/9.80665 kg on Earth. This is derived using Newton's second law f=ma and assuming Earth gravity of 9.80665 m/s2. 1 N (Earth) = 0.101971621297793 kg.