Rate of climb(R/C) = (PA-PR)/W

PA- Power available in watt

PR- Power required in watt

W- Weight of an aircraft in Newton

R/C SI unit- m/s

Rate of climb (R/C) is defined as the ratio of the change in powers between power available(PA) and power required (PR) to the weight of an aircraft. The SI unit of rate of climb is meter/sec (m/s)