Calculate gravitational potential energy from mass, height and gravity.
Potential energy is the work done lifting a mass against gravity, and it converts entirely into kinetic energy in a frictionless fall. Equating the two gives the impact speed shown. Pumped-storage hydro is exactly this equation at scale, which is why the kilowatt-hour figure is so small for everyday masses and heights.
Potential Energy
PE = m g h
PE = m g h Potential energy is the work done lifting a mass against gravity, and it converts entirely into kinetic energy in a frictionless fall. Equating the two gives the impact speed shown.
Pumped-storage hydro is exactly this equation at scale, which is why the kilowatt-hour figure is so small for everyday masses and heights.
This calculator takes 3 inputs: Mass, Height, Gravitational acceleration. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.