Kinetic and potential energy
The energy of a moving or raised object, in joules, kilojoules and kWh.
How it works
Kinetic energy KE = ½ m v² (v in m/s). Potential energy PE = m g h with g = 9.81 m/s². Drop height equivalent to the speed: h = v² / 2g.
Results are for guidance only and do not replace professional advice.
Worked example
With the default values:
- Mass (kg)1200
- Speed (km/h)50
- Height (m)10
you get:
- Kinetic energy115.741 kJ
- Potential energy117.72 kJ
- Total mechanical energy233.461 kJ (0.06485 kWh)
- Drop height equivalent to the speed9.83 m
Frequently asked questions
How does the “Kinetic and potential energy” tool work?
Kinetic energy KE = ½ m v² (v in m/s). Potential energy PE = m g h with g = 9.81 m/s². Drop height equivalent to the speed: h = v² / 2g.
What do I need to enter?
Just fill in: mass, speed, height. The result updates as you type.
Can you give an example?
Mass (kg): 1200; Speed (km/h): 50; Height (m): 10 → Kinetic energy: 115.741 kJ; Potential energy: 117.72 kJ.
Is this calculator free, and is my data private?
Yes. HOD Calc is completely free with no sign-up. The calculation runs in your browser: nothing you type is sent or stored.