Energy and Work

Calculate mechanical work, average power, force-velocity power and efficiency with joules, watts, kW, hp and kWh.

Calculate kinetic energy, mass or speed from formula mv², with optional relativistic energy for high speeds.

Calculate gravitational potential energy near Earth, orbital gravitational potential energy, or elastic spring potential energy.

Calculate rotational kinetic energy from moment of inertia and angular speed, solve inverse values and compare common rotating shapes.