Gravitational Potential Energy Calculator
Calculate near-surface potential-energy change and weight from mass, height change and gravity.
What would you like to do next?
Calculate a near-surface gravitational energy change
Enter mass, signed height change and gravitational acceleration. The calculator applies delta PE equals mgh, shows the energy change in joules and also reports weight magnitude. A negative height produces an energy decrease, making the direction of the change explicit instead of returning only an unsigned number.
Choose a reference height and valid gravity range
Potential energy depends on a chosen zero height, while only differences affect this calculation. Constant gravity is a useful near-surface approximation but becomes less accurate across very large altitude changes. The tool does not model drag, efficiency or the path taken. Lifting systems and safety work require forces, dynamics and equipment limits beyond the energy baseline.
Frequently asked questions
Can height change be negative?
Yes. A negative value represents movement to a lower reference height.
What gravity value is prefilled?
The default is standard Earth gravity, 9.80665 meters per second squared.
Is lifting efficiency included?
No. The result is the ideal gravitational energy change.