Potential Energy Calculator
Calculate gravitational potential energy using mass, height, and gravity. PE = mgh.
Enter mass and height to calculate potential energy.
Gravitational Potential Energy Formula
PE = m × g × h
Where m is mass (kg), g is gravitational acceleration (9.81 m/s² on Earth), and h is height above a reference point.
Example: A 5 kg ball at 10 m height.
PE = 5 × 9.81 × 10 = 490.5 J
PE = 5 × 9.81 × 10 = 490.5 J
Key Concepts
- PE is relative — it depends on the chosen reference point (usually ground level).
- As an object falls, PE converts to kinetic energy.
- At the highest point of a throw, all kinetic energy has become PE.
FAQ
Can potential energy be negative?
Yes, if the object is below the reference point. For example, a ball in a hole has negative PE relative to ground level.
What is the difference between PE and KE?
Potential energy is stored energy due to position. Kinetic energy is energy of motion. Together they make up mechanical energy.
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Last updated: 2026-08-08