Spring Calculator (Hooke's Law)

Spring force, elastic potential energy, and oscillation period/frequency of a mass on a spring.

How to use the Spring Calculator

Enter or select: Spring constant k, Extension x, Mass m.
The results (Restoring force, Elastic energy, Period, Frequency) are calculated instantly as you type.
Use “Copy link” to share the calculation with the same input values.

Formula

F = −kx
E = ½kx²
T = 2π√(m/k)