Kinetic & Potential Energy Calculator
Calculate kinetic energy (½mv²) and gravitational potential energy (mgh).
Last reviewed by the myCalculator Editorial Team
Input Parameters
Calculation Results
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Formula & How Kinetic & Potential Energy Calculator Works
Kinetic energy is the energy of motion: Ek = ½ × m × v². A 1,000 kg car at 20 m/s (72 km/h) has ½ × 1,000 × 400 = 200,000 J, or 200 kJ. At 40 m/s the energy is 800 kJ, four times as much, because speed is squared. That is why stopping distances and crash forces rise so steeply with speed. Potential energy is Ep = m × g × h, so an 80 kg person on a platform 10 m up has 80 × 9.81 × 10 = 7,848 J of potential energy relative to the ground. Energy is conserved, so potential energy converts to kinetic energy as an object falls.
- Enter Mass (kg): Input your target parameter value.
- Enter Velocity (m/s): Input your target parameter value.
- Enter Height (m): Input your target parameter value.
- Apply Formula: Calculate using
Ek = ½mv², Ep = mgh. - Review Results: View exact computed answers, metrics, and worked mathematical proofs.
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MyCalculator.com.au. (2026). Kinetic & Potential Energy Calculator. Retrieved October 24, 2026, from https://www.mycalculator.com.au/calculators/physics/kinetic-energy
MyCalculator.com.au. (2026) 'Kinetic & Potential Energy Calculator'. Available at: https://www.mycalculator.com.au/calculators/physics/kinetic-energy (Accessed: 24 October 2026).
Frequently Asked Questions (FAQs)
What is conservation of mechanical energy?
In a closed system without friction, total mechanical energy (Ek + Ep) remains constant.
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