ONE FORMULA, ONE ANSWER
Spring Potential Energy Calculator
Calculate energy stored in a stretched or compressed linear spring. Choose input units and calculate one value within the stated conditions.
Inputs
Calculations run in this browser. Scientific notation such as 1.2e-3 is supported. Do not group thousands.
Result
Elastic stored energy U
Enter values and select Calculate.
U = ½kx²
Assumptions
Required: k>0 and signed displacement from the undeformed equilibrium. Conservative linear Hooke-law spring. Excluded: plasticity, hysteresis and damping.
Displayed values are floating-point approximations. Design safety factors and unprovided error contributions are not calculated.
Formula references and credits
NaNa Lab created the code, descriptions, icons and preview images. Text, figures and code from the linked references have not been reproduced.
Physical constants: NIST / CODATA 2022. The values of μ₀ and ε₀ are measured recommendations, not exact defining constants. Values and precision notes are in the source record.
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