Elastic Potential Energy Calculator

Use U = ½kx² and F = kx with an explicit ideal Hooke-law model.

Spring constant k (N/m)

Displacement x

—U = ½kx²

—|F| = k|x|

—Spring constant

—Displacement

—Energy in mJ

Ideal linear Hooke-law model only. Real springs can become nonlinear or permanently deform outside their elastic range.

Connected mechanics workflow

v10.88 connects translational motion, forces, momentum, energy, rotation, gravitation, waves and oscillation while preserving the established v2.3/v4.4/v10.38 physics engines.

State the model before trusting the number

Classical formulas are only as good as their assumptions and units. Air resistance, damping, deformation, non-constant forces and measurement uncertainty are not silently invented when the selected model does not include them.

How to use this Elastic Potential Energy Calculator

Calculate ideal spring potential energy and restoring-force magnitude from spring constant and displacement.

Enter, paste, upload, or choose the inputs shown in the tool above.
Adjust the available options for the result you need.
Review the output before copying, downloading, or using it elsewhere.

What this tool does

Use U = ½kx² and F = kx with an explicit ideal Hooke-law model.

Practical tips and limits

Review the inputs and result before using the output elsewhere. Keep the original data when the operation changes or replaces content.